./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4eb775f57791ca8f3541a03278dc5eb83ecb8d3533ee7aa5dd1ca1cf24d1fbf4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:36:54,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:36:54,375 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:36:54,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:36:54,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:36:54,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:36:54,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:36:54,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:36:54,428 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:36:54,428 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:36:54,429 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:36:54,429 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:36:54,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:36:54,429 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:36:54,429 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:36:54,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:36:54,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:36:54,432 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:36:54,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:36:54,432 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:36:54,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:36:54,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:36:54,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:36:54,433 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:36:54,433 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:36:54,433 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:36:54,433 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:36:54,434 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:36:54,434 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:36:54,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:36:54,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:36:54,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:36:54,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:54,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:36:54,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:36:54,435 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:36:54,435 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:36:54,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:54,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:36:54,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:36:54,435 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:36:54,435 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:36:54,435 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:36:54,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:36:54,435 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:36:54,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:36:54,436 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:36:54,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:36:54,437 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_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb775f57791ca8f3541a03278dc5eb83ecb8d3533ee7aa5dd1ca1cf24d1fbf4 [2024-11-28 04:36:54,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:36:54,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:36:54,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:36:54,814 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:36:54,815 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:36:54,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2024-11-28 04:36:58,061 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/data/f80b3edf0/724a469f5c4e4c788d0b60d356ad26c3/FLAG5ed0f8eea [2024-11-28 04:36:58,777 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:36:58,778 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2024-11-28 04:36:58,826 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/data/f80b3edf0/724a469f5c4e4c788d0b60d356ad26c3/FLAG5ed0f8eea [2024-11-28 04:36:58,852 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/data/f80b3edf0/724a469f5c4e4c788d0b60d356ad26c3 [2024-11-28 04:36:58,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:36:58,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:36:58,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:36:58,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:36:58,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:36:58,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:58" (1/1) ... [2024-11-28 04:36:58,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b74606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:58, skipping insertion in model container [2024-11-28 04:36:58,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:58" (1/1) ... [2024-11-28 04:36:59,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:36:59,373 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_d1abe184-fd92-4914-ab57-5ea2f92d4393/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[6354,6367] [2024-11-28 04:36:59,428 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_d1abe184-fd92-4914-ab57-5ea2f92d4393/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[9171,9184] [2024-11-28 04:37:00,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:37:00,409 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:37:00,452 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_d1abe184-fd92-4914-ab57-5ea2f92d4393/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[6354,6367] [2024-11-28 04:37:00,468 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_d1abe184-fd92-4914-ab57-5ea2f92d4393/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[9171,9184] [2024-11-28 04:37:01,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:37:01,130 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:37:01,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01 WrapperNode [2024-11-28 04:37:01,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:37:01,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:37:01,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:37:01,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:37:01,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:01,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:01,859 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-11-28 04:37:01,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:37:01,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:37:01,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:37:01,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:37:01,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:01,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:02,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:02,249 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]. [2024-11-28 04:37:02,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:02,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:02,517 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:02,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:02,606 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:02,640 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:02,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:02,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:37:02,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:37:02,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:37:02,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:37:02,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (1/1) ... [2024-11-28 04:37:02,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:37:02,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:02,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:37:02,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:37:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:37:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:37:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:37:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:37:03,033 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:37:03,035 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:37:10,336 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-11-28 04:37:10,337 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:37:10,369 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:37:10,369 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 04:37:10,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:37:10 BoogieIcfgContainer [2024-11-28 04:37:10,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:37:10,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:37:10,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:37:10,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:37:10,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:36:58" (1/3) ... [2024-11-28 04:37:10,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f8d7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:37:10, skipping insertion in model container [2024-11-28 04:37:10,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:01" (2/3) ... [2024-11-28 04:37:10,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f8d7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:37:10, skipping insertion in model container [2024-11-28 04:37:10,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:37:10" (3/3) ... [2024-11-28 04:37:10,382 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2024-11-28 04:37:10,401 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:37:10,404 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c that has 1 procedures, 873 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-28 04:37:10,589 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:37:10,610 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;@51ffe1c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:37:10,610 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:37:10,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:37:10,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:10,632 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:10,632 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:10,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1661669358, now seen corresponding path program 1 times [2024-11-28 04:37:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:10,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712785774] [2024-11-28 04:37:10,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:10,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:10,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:10,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712785774] [2024-11-28 04:37:10,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712785774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:10,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:10,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:37:10,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485466222] [2024-11-28 04:37:10,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:10,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:37:10,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:11,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:37:11,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:37:11,031 INFO L87 Difference]: Start difference. First operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:11,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:11,175 INFO L93 Difference]: Finished difference Result 1724 states and 3276 transitions. [2024-11-28 04:37:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:37:11,178 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-28 04:37:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:11,196 INFO L225 Difference]: With dead ends: 1724 [2024-11-28 04:37:11,196 INFO L226 Difference]: Without dead ends: 807 [2024-11-28 04:37:11,202 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 [2024-11-28 04:37:11,205 INFO L435 NwaCegarLoop]: 1592 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:11,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-11-28 04:37:11,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-11-28 04:37:11,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8944099378881987) internal successors, (1525), 806 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1525 transitions. [2024-11-28 04:37:11,285 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1525 transitions. Word has length 21 [2024-11-28 04:37:11,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:11,285 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1525 transitions. [2024-11-28 04:37:11,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1525 transitions. [2024-11-28 04:37:11,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:37:11,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:11,287 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:11,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:37:11,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:11,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434260, now seen corresponding path program 1 times [2024-11-28 04:37:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:11,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588510997] [2024-11-28 04:37:11,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:11,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:11,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588510997] [2024-11-28 04:37:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588510997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:11,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:11,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:37:11,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876289458] [2024-11-28 04:37:11,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:11,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:37:11,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:11,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:37:11,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:37:11,652 INFO L87 Difference]: Start difference. First operand 807 states and 1525 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:11,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:11,861 INFO L93 Difference]: Finished difference Result 873 states and 1625 transitions. [2024-11-28 04:37:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:37:11,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-28 04:37:11,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:11,870 INFO L225 Difference]: With dead ends: 873 [2024-11-28 04:37:11,871 INFO L226 Difference]: Without dead ends: 838 [2024-11-28 04:37:11,871 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 [2024-11-28 04:37:11,873 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 47 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:11,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6062 Invalid, 37 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:11,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-28 04:37:11,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 807. [2024-11-28 04:37:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8745341614906832) internal successors, (1509), 806 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:11,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1509 transitions. [2024-11-28 04:37:11,946 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1509 transitions. Word has length 21 [2024-11-28 04:37:11,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:11,947 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1509 transitions. [2024-11-28 04:37:11,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:11,947 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1509 transitions. [2024-11-28 04:37:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 04:37:11,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:11,948 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] [2024-11-28 04:37:11,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:37:11,948 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:11,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2014528043, now seen corresponding path program 1 times [2024-11-28 04:37:11,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:11,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880719738] [2024-11-28 04:37:11,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:11,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:12,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:12,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880719738] [2024-11-28 04:37:12,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880719738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:12,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:12,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:37:12,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088487537] [2024-11-28 04:37:12,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:12,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:12,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:12,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:12,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:12,140 INFO L87 Difference]: Start difference. First operand 807 states and 1509 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:18,259 INFO L93 Difference]: Finished difference Result 2311 states and 4382 transitions. [2024-11-28 04:37:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:18,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-28 04:37:18,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:18,267 INFO L225 Difference]: With dead ends: 2311 [2024-11-28 04:37:18,268 INFO L226 Difference]: Without dead ends: 1558 [2024-11-28 04:37:18,269 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 [2024-11-28 04:37:18,270 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 847 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:18,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 545 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-28 04:37:18,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2024-11-28 04:37:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1558. [2024-11-28 04:37:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1556 states have (on average 1.5989717223650386) internal successors, (2488), 1557 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2488 transitions. [2024-11-28 04:37:18,358 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2488 transitions. Word has length 24 [2024-11-28 04:37:18,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:18,358 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 2488 transitions. [2024-11-28 04:37:18,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2488 transitions. [2024-11-28 04:37:18,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 04:37:18,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:18,359 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:18,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:37:18,360 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:18,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:18,363 INFO L85 PathProgramCache]: Analyzing trace with hash 904930012, now seen corresponding path program 1 times [2024-11-28 04:37:18,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:18,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204259100] [2024-11-28 04:37:18,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:18,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:18,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:18,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204259100] [2024-11-28 04:37:18,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204259100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:18,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:18,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:37:18,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191170064] [2024-11-28 04:37:18,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:18,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:37:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:18,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:37:18,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:37:18,594 INFO L87 Difference]: Start difference. First operand 1558 states and 2488 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:18,762 INFO L93 Difference]: Finished difference Result 1744 states and 2776 transitions. [2024-11-28 04:37:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:37:18,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-28 04:37:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:18,772 INFO L225 Difference]: With dead ends: 1744 [2024-11-28 04:37:18,772 INFO L226 Difference]: Without dead ends: 1713 [2024-11-28 04:37:18,773 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 [2024-11-28 04:37:18,774 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 4627 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:18,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 1775 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2024-11-28 04:37:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1587. [2024-11-28 04:37:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1585 states have (on average 1.5981072555205047) internal successors, (2533), 1586 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2533 transitions. [2024-11-28 04:37:18,828 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2533 transitions. Word has length 36 [2024-11-28 04:37:18,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:18,829 INFO L471 AbstractCegarLoop]: Abstraction has 1587 states and 2533 transitions. [2024-11-28 04:37:18,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:18,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2533 transitions. [2024-11-28 04:37:18,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:37:18,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:18,833 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] [2024-11-28 04:37:18,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:37:18,834 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:18,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:18,834 INFO L85 PathProgramCache]: Analyzing trace with hash 638646444, now seen corresponding path program 1 times [2024-11-28 04:37:18,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:18,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936538818] [2024-11-28 04:37:18,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:18,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:18,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:18,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936538818] [2024-11-28 04:37:18,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936538818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:18,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:18,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412395451] [2024-11-28 04:37:18,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:18,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:18,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:18,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:18,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:18,964 INFO L87 Difference]: Start difference. First operand 1587 states and 2533 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:19,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:19,012 INFO L93 Difference]: Finished difference Result 1696 states and 2700 transitions. [2024-11-28 04:37:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:19,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 04:37:19,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:19,021 INFO L225 Difference]: With dead ends: 1696 [2024-11-28 04:37:19,021 INFO L226 Difference]: Without dead ends: 1636 [2024-11-28 04:37:19,022 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 [2024-11-28 04:37:19,023 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:19,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:19,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-11-28 04:37:19,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-11-28 04:37:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.5949754901960784) internal successors, (2603), 1633 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2603 transitions. [2024-11-28 04:37:19,140 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2603 transitions. Word has length 38 [2024-11-28 04:37:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:19,141 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2603 transitions. [2024-11-28 04:37:19,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2603 transitions. [2024-11-28 04:37:19,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:37:19,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:19,145 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] [2024-11-28 04:37:19,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:37:19,145 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:19,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:19,147 INFO L85 PathProgramCache]: Analyzing trace with hash 705139956, now seen corresponding path program 1 times [2024-11-28 04:37:19,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:19,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406446718] [2024-11-28 04:37:19,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:19,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:19,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:19,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406446718] [2024-11-28 04:37:19,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406446718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:19,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:19,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:37:19,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59944546] [2024-11-28 04:37:19,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:19,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:37:19,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:19,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:37:19,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:37:19,468 INFO L87 Difference]: Start difference. First operand 1634 states and 2603 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:19,585 INFO L93 Difference]: Finished difference Result 1743 states and 2767 transitions. [2024-11-28 04:37:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:37:19,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 04:37:19,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:19,600 INFO L225 Difference]: With dead ends: 1743 [2024-11-28 04:37:19,600 INFO L226 Difference]: Without dead ends: 1636 [2024-11-28 04:37:19,601 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 [2024-11-28 04:37:19,602 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 4417 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4417 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:19,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4417 Valid, 1592 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:19,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-11-28 04:37:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-11-28 04:37:19,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.59375) internal successors, (2601), 1633 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2601 transitions. [2024-11-28 04:37:19,664 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2601 transitions. Word has length 38 [2024-11-28 04:37:19,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:19,665 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2601 transitions. [2024-11-28 04:37:19,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2601 transitions. [2024-11-28 04:37:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 04:37:19,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:19,668 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] [2024-11-28 04:37:19,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:37:19,669 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:19,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:19,669 INFO L85 PathProgramCache]: Analyzing trace with hash -30221064, now seen corresponding path program 1 times [2024-11-28 04:37:19,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:19,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494425610] [2024-11-28 04:37:19,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:19,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:19,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:19,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494425610] [2024-11-28 04:37:19,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494425610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:19,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:19,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:37:19,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013086207] [2024-11-28 04:37:19,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:19,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:37:19,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:19,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:37:19,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:37:19,938 INFO L87 Difference]: Start difference. First operand 1634 states and 2601 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:20,002 INFO L93 Difference]: Finished difference Result 1642 states and 2610 transitions. [2024-11-28 04:37:20,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:37:20,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-28 04:37:20,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:20,011 INFO L225 Difference]: With dead ends: 1642 [2024-11-28 04:37:20,011 INFO L226 Difference]: Without dead ends: 1640 [2024-11-28 04:37:20,012 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 [2024-11-28 04:37:20,014 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:20,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6015 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:20,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-11-28 04:37:20,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2024-11-28 04:37:20,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1638 states have (on average 1.5909645909645909) internal successors, (2606), 1639 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2606 transitions. [2024-11-28 04:37:20,064 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2606 transitions. Word has length 39 [2024-11-28 04:37:20,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:20,066 INFO L471 AbstractCegarLoop]: Abstraction has 1640 states and 2606 transitions. [2024-11-28 04:37:20,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2606 transitions. [2024-11-28 04:37:20,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 04:37:20,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:20,068 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, 1, 1, 1] [2024-11-28 04:37:20,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:37:20,069 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:20,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:20,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1276756908, now seen corresponding path program 1 times [2024-11-28 04:37:20,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:20,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279985002] [2024-11-28 04:37:20,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:20,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:20,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:20,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279985002] [2024-11-28 04:37:20,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279985002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:20,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:20,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:20,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784671541] [2024-11-28 04:37:20,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:20,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:20,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:20,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:20,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:20,164 INFO L87 Difference]: Start difference. First operand 1640 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:20,209 INFO L93 Difference]: Finished difference Result 1850 states and 2910 transitions. [2024-11-28 04:37:20,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:20,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-28 04:37:20,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:20,218 INFO L225 Difference]: With dead ends: 1850 [2024-11-28 04:37:20,218 INFO L226 Difference]: Without dead ends: 1737 [2024-11-28 04:37:20,219 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 [2024-11-28 04:37:20,220 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:20,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:20,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2024-11-28 04:37:20,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1735. [2024-11-28 04:37:20,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1733 states have (on average 1.5804962492787074) internal successors, (2739), 1734 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2739 transitions. [2024-11-28 04:37:20,275 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2739 transitions. Word has length 40 [2024-11-28 04:37:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:20,275 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 2739 transitions. [2024-11-28 04:37:20,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2739 transitions. [2024-11-28 04:37:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 04:37:20,276 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:20,276 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:20,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:37:20,277 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:20,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:20,277 INFO L85 PathProgramCache]: Analyzing trace with hash 504175956, now seen corresponding path program 1 times [2024-11-28 04:37:20,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:20,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38999405] [2024-11-28 04:37:20,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:20,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:20,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:20,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38999405] [2024-11-28 04:37:20,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38999405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:20,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:20,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:20,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454244132] [2024-11-28 04:37:20,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:20,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:20,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:20,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:20,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:20,371 INFO L87 Difference]: Start difference. First operand 1735 states and 2739 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:20,417 INFO L93 Difference]: Finished difference Result 2119 states and 3281 transitions. [2024-11-28 04:37:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:20,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-28 04:37:20,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:20,428 INFO L225 Difference]: With dead ends: 2119 [2024-11-28 04:37:20,428 INFO L226 Difference]: Without dead ends: 1911 [2024-11-28 04:37:20,430 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 [2024-11-28 04:37:20,431 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 1472 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:20,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:20,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2024-11-28 04:37:20,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1909. [2024-11-28 04:37:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1907 states have (on average 1.5589931830099633) internal successors, (2973), 1908 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2973 transitions. [2024-11-28 04:37:20,489 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2973 transitions. Word has length 40 [2024-11-28 04:37:20,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:20,490 INFO L471 AbstractCegarLoop]: Abstraction has 1909 states and 2973 transitions. [2024-11-28 04:37:20,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2973 transitions. [2024-11-28 04:37:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 04:37:20,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:20,491 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:20,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:37:20,492 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:20,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:20,492 INFO L85 PathProgramCache]: Analyzing trace with hash 938711892, now seen corresponding path program 1 times [2024-11-28 04:37:20,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:20,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745488470] [2024-11-28 04:37:20,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:20,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:20,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:20,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745488470] [2024-11-28 04:37:20,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745488470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:20,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:20,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:20,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11499497] [2024-11-28 04:37:20,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:20,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:20,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:20,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:20,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:20,565 INFO L87 Difference]: Start difference. First operand 1909 states and 2973 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:20,677 INFO L93 Difference]: Finished difference Result 2332 states and 3571 transitions. [2024-11-28 04:37:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:20,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-28 04:37:20,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:20,687 INFO L225 Difference]: With dead ends: 2332 [2024-11-28 04:37:20,687 INFO L226 Difference]: Without dead ends: 2106 [2024-11-28 04:37:20,690 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 [2024-11-28 04:37:20,690 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1476 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:20,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2024-11-28 04:37:20,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2104. [2024-11-28 04:37:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2102 states have (on average 1.5394862036156043) internal successors, (3236), 2103 states have internal predecessors, (3236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3236 transitions. [2024-11-28 04:37:20,759 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3236 transitions. Word has length 40 [2024-11-28 04:37:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:20,759 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 3236 transitions. [2024-11-28 04:37:20,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3236 transitions. [2024-11-28 04:37:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:37:20,761 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:20,761 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:20,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:37:20,761 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:20,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:20,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1906548838, now seen corresponding path program 1 times [2024-11-28 04:37:20,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:20,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595512843] [2024-11-28 04:37:20,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:20,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:37:20,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:20,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595512843] [2024-11-28 04:37:20,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595512843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:20,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:20,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:37:20,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063661520] [2024-11-28 04:37:20,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:20,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:37:20,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:20,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:37:20,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:37:20,933 INFO L87 Difference]: Start difference. First operand 2104 states and 3236 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:21,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:21,070 INFO L93 Difference]: Finished difference Result 3960 states and 5788 transitions. [2024-11-28 04:37:21,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:37:21,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-28 04:37:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:21,084 INFO L225 Difference]: With dead ends: 3960 [2024-11-28 04:37:21,084 INFO L226 Difference]: Without dead ends: 3386 [2024-11-28 04:37:21,086 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 [2024-11-28 04:37:21,087 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3044 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:21,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3044 Valid, 3149 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:21,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2024-11-28 04:37:21,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2676. [2024-11-28 04:37:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2674 states have (on average 1.5018698578908003) internal successors, (4016), 2675 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 4016 transitions. [2024-11-28 04:37:21,259 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 4016 transitions. Word has length 56 [2024-11-28 04:37:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:21,259 INFO L471 AbstractCegarLoop]: Abstraction has 2676 states and 4016 transitions. [2024-11-28 04:37:21,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 4016 transitions. [2024-11-28 04:37:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:37:21,268 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:21,268 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:21,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:37:21,268 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:21,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:21,269 INFO L85 PathProgramCache]: Analyzing trace with hash -125615974, now seen corresponding path program 1 times [2024-11-28 04:37:21,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:21,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310744134] [2024-11-28 04:37:21,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:21,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:37:21,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:21,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310744134] [2024-11-28 04:37:21,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310744134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:21,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:21,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:37:21,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855578734] [2024-11-28 04:37:21,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:21,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:37:21,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:21,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:37:21,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:37:21,497 INFO L87 Difference]: Start difference. First operand 2676 states and 4016 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:21,672 INFO L93 Difference]: Finished difference Result 4532 states and 6568 transitions. [2024-11-28 04:37:21,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:37:21,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-28 04:37:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:21,687 INFO L225 Difference]: With dead ends: 4532 [2024-11-28 04:37:21,688 INFO L226 Difference]: Without dead ends: 3958 [2024-11-28 04:37:21,690 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 [2024-11-28 04:37:21,691 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3048 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:21,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3048 Valid, 3155 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:21,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2024-11-28 04:37:21,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3536. [2024-11-28 04:37:21,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.4646293152235428) internal successors, (5176), 3535 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5176 transitions. [2024-11-28 04:37:21,819 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5176 transitions. Word has length 56 [2024-11-28 04:37:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:21,820 INFO L471 AbstractCegarLoop]: Abstraction has 3536 states and 5176 transitions. [2024-11-28 04:37:21,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:21,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5176 transitions. [2024-11-28 04:37:21,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:37:21,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:21,821 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:21,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:37:21,822 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:21,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:21,822 INFO L85 PathProgramCache]: Analyzing trace with hash 308919962, now seen corresponding path program 1 times [2024-11-28 04:37:21,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:21,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007258738] [2024-11-28 04:37:21,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:21,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:37:22,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:22,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007258738] [2024-11-28 04:37:22,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007258738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:22,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:22,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:37:22,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867576402] [2024-11-28 04:37:22,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:22,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:37:22,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:22,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:37:22,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:37:22,065 INFO L87 Difference]: Start difference. First operand 3536 states and 5176 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:22,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:22,338 INFO L93 Difference]: Finished difference Result 4792 states and 6932 transitions. [2024-11-28 04:37:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:37:22,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-28 04:37:22,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:22,374 INFO L225 Difference]: With dead ends: 4792 [2024-11-28 04:37:22,379 INFO L226 Difference]: Without dead ends: 4374 [2024-11-28 04:37:22,381 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 [2024-11-28 04:37:22,385 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3043 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:22,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3163 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2024-11-28 04:37:22,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 3952. [2024-11-28 04:37:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.4562025316455696) internal successors, (5752), 3951 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5752 transitions. [2024-11-28 04:37:22,585 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5752 transitions. Word has length 56 [2024-11-28 04:37:22,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:22,586 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 5752 transitions. [2024-11-28 04:37:22,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:22,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5752 transitions. [2024-11-28 04:37:22,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 04:37:22,589 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:22,589 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:22,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:37:22,593 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:22,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:22,593 INFO L85 PathProgramCache]: Analyzing trace with hash 977738755, now seen corresponding path program 1 times [2024-11-28 04:37:22,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:22,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333466469] [2024-11-28 04:37:22,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:22,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:22,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:22,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333466469] [2024-11-28 04:37:22,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333466469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:22,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:22,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:22,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256914086] [2024-11-28 04:37:22,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:22,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:22,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:22,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:22,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:22,721 INFO L87 Difference]: Start difference. First operand 3952 states and 5752 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) [2024-11-28 04:37:22,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:22,808 INFO L93 Difference]: Finished difference Result 6376 states and 9062 transitions. [2024-11-28 04:37:22,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:22,809 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 [2024-11-28 04:37:22,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:22,820 INFO L225 Difference]: With dead ends: 6376 [2024-11-28 04:37:22,821 INFO L226 Difference]: Without dead ends: 3954 [2024-11-28 04:37:22,824 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 [2024-11-28 04:37:22,825 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:22,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2024-11-28 04:37:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3952. [2024-11-28 04:37:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.4435443037974685) internal successors, (5702), 3951 states have internal predecessors, (5702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5702 transitions. [2024-11-28 04:37:22,965 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5702 transitions. Word has length 57 [2024-11-28 04:37:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:22,966 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 5702 transitions. [2024-11-28 04:37:22,966 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) [2024-11-28 04:37:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5702 transitions. [2024-11-28 04:37:22,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 04:37:22,967 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:22,968 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:22,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:37:22,968 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:22,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:22,969 INFO L85 PathProgramCache]: Analyzing trace with hash 408394290, now seen corresponding path program 1 times [2024-11-28 04:37:22,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:22,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416306326] [2024-11-28 04:37:22,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:22,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:23,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:23,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416306326] [2024-11-28 04:37:23,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416306326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:23,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:23,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:23,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647973177] [2024-11-28 04:37:23,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:23,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:23,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:23,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:23,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:23,095 INFO L87 Difference]: Start difference. First operand 3952 states and 5702 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:23,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:23,185 INFO L93 Difference]: Finished difference Result 4908 states and 6999 transitions. [2024-11-28 04:37:23,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:23,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-28 04:37:23,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:23,196 INFO L225 Difference]: With dead ends: 4908 [2024-11-28 04:37:23,196 INFO L226 Difference]: Without dead ends: 2486 [2024-11-28 04:37:23,201 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 [2024-11-28 04:37:23,201 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 23 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:23,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:23,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2024-11-28 04:37:23,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2477. [2024-11-28 04:37:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.50020202020202) internal successors, (3713), 2476 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3713 transitions. [2024-11-28 04:37:23,286 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3713 transitions. Word has length 58 [2024-11-28 04:37:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:23,286 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 3713 transitions. [2024-11-28 04:37:23,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3713 transitions. [2024-11-28 04:37:23,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 04:37:23,289 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:23,289 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:23,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:37:23,289 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:23,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1553558485, now seen corresponding path program 1 times [2024-11-28 04:37:23,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:23,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725503225] [2024-11-28 04:37:23,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:23,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:23,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725503225] [2024-11-28 04:37:23,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725503225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:23,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:23,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:37:23,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807160096] [2024-11-28 04:37:23,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:23,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:37:23,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:23,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:37:23,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:37:23,417 INFO L87 Difference]: Start difference. First operand 2477 states and 3713 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) [2024-11-28 04:37:23,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:23,457 INFO L93 Difference]: Finished difference Result 2949 states and 4345 transitions. [2024-11-28 04:37:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:37:23,458 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 [2024-11-28 04:37:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:23,464 INFO L225 Difference]: With dead ends: 2949 [2024-11-28 04:37:23,465 INFO L226 Difference]: Without dead ends: 2011 [2024-11-28 04:37:23,466 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 [2024-11-28 04:37:23,468 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 25 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:23,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:23,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2024-11-28 04:37:23,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 2009. [2024-11-28 04:37:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2007 states have (on average 1.5316392625809667) internal successors, (3074), 2008 states have internal predecessors, (3074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3074 transitions. [2024-11-28 04:37:23,522 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3074 transitions. Word has length 59 [2024-11-28 04:37:23,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:23,522 INFO L471 AbstractCegarLoop]: Abstraction has 2009 states and 3074 transitions. [2024-11-28 04:37:23,523 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) [2024-11-28 04:37:23,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3074 transitions. [2024-11-28 04:37:23,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:37:23,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:23,526 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:23,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:37:23,527 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:23,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:23,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1066169817, now seen corresponding path program 1 times [2024-11-28 04:37:23,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:23,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907073122] [2024-11-28 04:37:23,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:23,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:37:23,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:23,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907073122] [2024-11-28 04:37:23,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907073122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:23,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048872015] [2024-11-28 04:37:23,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:23,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:23,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:23,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:23,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:37:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:23,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:37:23,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:24,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:25,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048872015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:25,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:25,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-11-28 04:37:25,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087362325] [2024-11-28 04:37:25,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:25,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:37:25,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:25,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:37:25,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:37:25,786 INFO L87 Difference]: Start difference. First operand 2009 states and 3074 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:27,059 INFO L93 Difference]: Finished difference Result 3490 states and 4987 transitions. [2024-11-28 04:37:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:37:27,060 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 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 [2024-11-28 04:37:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:27,068 INFO L225 Difference]: With dead ends: 3490 [2024-11-28 04:37:27,068 INFO L226 Difference]: Without dead ends: 3020 [2024-11-28 04:37:27,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 04:37:27,071 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 15564 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15564 SdHoareTripleChecker+Valid, 4639 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:27,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15564 Valid, 4639 Invalid, 336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:37:27,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2024-11-28 04:37:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2880. [2024-11-28 04:37:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2878 states have (on average 1.4388464211257819) internal successors, (4141), 2879 states have internal predecessors, (4141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4141 transitions. [2024-11-28 04:37:27,276 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4141 transitions. Word has length 61 [2024-11-28 04:37:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:27,280 INFO L471 AbstractCegarLoop]: Abstraction has 2880 states and 4141 transitions. [2024-11-28 04:37:27,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4141 transitions. [2024-11-28 04:37:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:37:27,282 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:27,282 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:27,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:37:27,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:27,486 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:27,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2045594482, now seen corresponding path program 1 times [2024-11-28 04:37:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:27,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207054543] [2024-11-28 04:37:27,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:27,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:28,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:28,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207054543] [2024-11-28 04:37:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207054543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041957565] [2024-11-28 04:37:28,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:28,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:28,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:28,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:28,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:37:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:28,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:37:28,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:29,090 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:30,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041957565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:30,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:30,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-28 04:37:30,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718281236] [2024-11-28 04:37:30,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:30,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 04:37:30,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:30,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 04:37:30,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:37:30,263 INFO L87 Difference]: Start difference. First operand 2880 states and 4141 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 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) [2024-11-28 04:37:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:32,247 INFO L93 Difference]: Finished difference Result 6371 states and 8620 transitions. [2024-11-28 04:37:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:37:32,248 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 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 62 [2024-11-28 04:37:32,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:32,262 INFO L225 Difference]: With dead ends: 6371 [2024-11-28 04:37:32,262 INFO L226 Difference]: Without dead ends: 5150 [2024-11-28 04:37:32,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 04:37:32,266 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 18135 mSDsluCounter, 4853 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18135 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:32,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18135 Valid, 6340 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:37:32,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2024-11-28 04:37:32,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 5124. [2024-11-28 04:37:32,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5124 states, 5122 states have (on average 1.3580632565404138) internal successors, (6956), 5123 states have internal predecessors, (6956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 6956 transitions. [2024-11-28 04:37:32,518 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 6956 transitions. Word has length 62 [2024-11-28 04:37:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:32,518 INFO L471 AbstractCegarLoop]: Abstraction has 5124 states and 6956 transitions. [2024-11-28 04:37:32,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 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) [2024-11-28 04:37:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 6956 transitions. [2024-11-28 04:37:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:37:32,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:32,524 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, 1, 1] [2024-11-28 04:37:32,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:37:32,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:32,725 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:32,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:32,730 INFO L85 PathProgramCache]: Analyzing trace with hash -679621431, now seen corresponding path program 1 times [2024-11-28 04:37:32,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:32,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721564782] [2024-11-28 04:37:32,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:32,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:34,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721564782] [2024-11-28 04:37:34,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721564782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560229502] [2024-11-28 04:37:34,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:34,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:34,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:34,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:34,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:37:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:34,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:37:34,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:35,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:36,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560229502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:36,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:36,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2024-11-28 04:37:36,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971903540] [2024-11-28 04:37:36,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:36,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 04:37:36,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:36,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 04:37:36,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:37:36,654 INFO L87 Difference]: Start difference. First operand 5124 states and 6956 transitions. Second operand has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:39,150 INFO L93 Difference]: Finished difference Result 11908 states and 15807 transitions. [2024-11-28 04:37:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:37:39,150 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 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 [2024-11-28 04:37:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:39,178 INFO L225 Difference]: With dead ends: 11908 [2024-11-28 04:37:39,178 INFO L226 Difference]: Without dead ends: 10404 [2024-11-28 04:37:39,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=548, Invalid=2104, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 04:37:39,185 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 11683 mSDsluCounter, 13608 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11683 SdHoareTripleChecker+Valid, 15107 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:39,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11683 Valid, 15107 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:37:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10404 states. [2024-11-28 04:37:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10404 to 4691. [2024-11-28 04:37:39,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 4689 states have (on average 1.3672424824056302) internal successors, (6411), 4690 states have internal predecessors, (6411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 6411 transitions. [2024-11-28 04:37:39,437 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 6411 transitions. Word has length 63 [2024-11-28 04:37:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:39,437 INFO L471 AbstractCegarLoop]: Abstraction has 4691 states and 6411 transitions. [2024-11-28 04:37:39,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 6411 transitions. [2024-11-28 04:37:39,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:37:39,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:39,439 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, 1, 1] [2024-11-28 04:37:39,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:37:39,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:39,641 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:39,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:39,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1861102501, now seen corresponding path program 1 times [2024-11-28 04:37:39,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832434776] [2024-11-28 04:37:39,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:40,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:40,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832434776] [2024-11-28 04:37:40,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832434776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:40,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905121387] [2024-11-28 04:37:40,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:40,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:40,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:40,813 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:40,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:37:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:40,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 04:37:40,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:43,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:47,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905121387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:47,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:47,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 18] total 46 [2024-11-28 04:37:47,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900839988] [2024-11-28 04:37:47,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:47,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 04:37:47,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:47,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 04:37:47,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1791, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 04:37:47,576 INFO L87 Difference]: Start difference. First operand 4691 states and 6411 transitions. Second operand has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:04,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:04,904 INFO L93 Difference]: Finished difference Result 9442 states and 12394 transitions. [2024-11-28 04:38:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-28 04:38:04,905 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 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 [2024-11-28 04:38:04,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:04,920 INFO L225 Difference]: With dead ends: 9442 [2024-11-28 04:38:04,921 INFO L226 Difference]: Without dead ends: 7086 [2024-11-28 04:38:04,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4079 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=2799, Invalid=11007, Unknown=0, NotChecked=0, Total=13806 [2024-11-28 04:38:04,929 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 17935 mSDsluCounter, 14790 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17935 SdHoareTripleChecker+Valid, 16323 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:04,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17935 Valid, 16323 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 04:38:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7086 states. [2024-11-28 04:38:05,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7086 to 5864. [2024-11-28 04:38:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5862 states have (on average 1.34834527465029) internal successors, (7904), 5863 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 7904 transitions. [2024-11-28 04:38:05,465 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 7904 transitions. Word has length 63 [2024-11-28 04:38:05,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:05,466 INFO L471 AbstractCegarLoop]: Abstraction has 5864 states and 7904 transitions. [2024-11-28 04:38:05,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 7904 transitions. [2024-11-28 04:38:05,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:38:05,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:05,468 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:05,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:38:05,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:05,670 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:05,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1538386304, now seen corresponding path program 1 times [2024-11-28 04:38:05,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:05,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243324929] [2024-11-28 04:38:05,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:05,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:38:05,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:05,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243324929] [2024-11-28 04:38:05,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243324929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:38:05,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:38:05,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:38:05,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052172930] [2024-11-28 04:38:05,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:38:05,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:38:05,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:05,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:38:05,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:38:05,998 INFO L87 Difference]: Start difference. First operand 5864 states and 7904 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:10,767 INFO L93 Difference]: Finished difference Result 8119 states and 11299 transitions. [2024-11-28 04:38:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:38:10,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2024-11-28 04:38:10,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:10,781 INFO L225 Difference]: With dead ends: 8119 [2024-11-28 04:38:10,781 INFO L226 Difference]: Without dead ends: 6615 [2024-11-28 04:38:10,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:38:10,784 INFO L435 NwaCegarLoop]: 761 mSDtfsCounter, 1716 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:10,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 1309 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 04:38:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6615 states. [2024-11-28 04:38:11,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6615 to 6615. [2024-11-28 04:38:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6615 states, 6613 states have (on average 1.3096930288825042) internal successors, (8661), 6614 states have internal predecessors, (8661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6615 states to 6615 states and 8661 transitions. [2024-11-28 04:38:11,117 INFO L78 Accepts]: Start accepts. Automaton has 6615 states and 8661 transitions. Word has length 99 [2024-11-28 04:38:11,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:11,117 INFO L471 AbstractCegarLoop]: Abstraction has 6615 states and 8661 transitions. [2024-11-28 04:38:11,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 6615 states and 8661 transitions. [2024-11-28 04:38:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 04:38:11,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:11,124 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:11,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 04:38:11,125 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:11,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:11,130 INFO L85 PathProgramCache]: Analyzing trace with hash 268330733, now seen corresponding path program 1 times [2024-11-28 04:38:11,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:11,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146901771] [2024-11-28 04:38:11,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:11,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:38:12,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146901771] [2024-11-28 04:38:12,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146901771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984698456] [2024-11-28 04:38:12,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:12,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:12,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:12,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:12,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:38:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:12,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:38:12,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:38:12,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:38:13,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984698456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:13,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:13,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 5] total 23 [2024-11-28 04:38:13,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983158985] [2024-11-28 04:38:13,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:13,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:38:13,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:13,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:38:13,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:38:13,501 INFO L87 Difference]: Start difference. First operand 6615 states and 8661 transitions. Second operand has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:18,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:18,534 INFO L93 Difference]: Finished difference Result 16957 states and 21375 transitions. [2024-11-28 04:38:18,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-28 04:38:18,534 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 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 [2024-11-28 04:38:18,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:18,546 INFO L225 Difference]: With dead ends: 16957 [2024-11-28 04:38:18,546 INFO L226 Difference]: Without dead ends: 12854 [2024-11-28 04:38:18,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3467 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1454, Invalid=9052, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 04:38:18,552 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 18387 mSDsluCounter, 11552 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18387 SdHoareTripleChecker+Valid, 13126 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:18,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18387 Valid, 13126 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:38:18,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12854 states. [2024-11-28 04:38:19,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12854 to 10201. [2024-11-28 04:38:19,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10201 states, 10199 states have (on average 1.2562015883910187) internal successors, (12812), 10200 states have internal predecessors, (12812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10201 states to 10201 states and 12812 transitions. [2024-11-28 04:38:19,146 INFO L78 Accepts]: Start accepts. Automaton has 10201 states and 12812 transitions. Word has length 103 [2024-11-28 04:38:19,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:19,146 INFO L471 AbstractCegarLoop]: Abstraction has 10201 states and 12812 transitions. [2024-11-28 04:38:19,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:19,147 INFO L276 IsEmpty]: Start isEmpty. Operand 10201 states and 12812 transitions. [2024-11-28 04:38:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 04:38:19,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:19,150 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:19,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:38:19,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:19,352 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:19,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:19,352 INFO L85 PathProgramCache]: Analyzing trace with hash 159932591, now seen corresponding path program 1 times [2024-11-28 04:38:19,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:19,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067686630] [2024-11-28 04:38:19,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:19,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 33 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:38:20,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:20,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067686630] [2024-11-28 04:38:20,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067686630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:20,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632613248] [2024-11-28 04:38:20,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:20,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:20,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:20,900 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:20,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:38:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:21,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:38:21,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 19 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:38:22,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:38:24,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632613248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:24,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:24,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 38 [2024-11-28 04:38:24,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344121002] [2024-11-28 04:38:24,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:24,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 04:38:24,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:24,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 04:38:24,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:38:24,570 INFO L87 Difference]: Start difference. First operand 10201 states and 12812 transitions. Second operand has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:35,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:35,819 INFO L93 Difference]: Finished difference Result 25680 states and 31646 transitions. [2024-11-28 04:38:35,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-28 04:38:35,820 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 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 [2024-11-28 04:38:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:35,837 INFO L225 Difference]: With dead ends: 25680 [2024-11-28 04:38:35,838 INFO L226 Difference]: Without dead ends: 20807 [2024-11-28 04:38:35,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=3517, Invalid=16789, Unknown=0, NotChecked=0, Total=20306 [2024-11-28 04:38:35,846 INFO L435 NwaCegarLoop]: 1605 mSDtfsCounter, 19298 mSDsluCounter, 27150 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19298 SdHoareTripleChecker+Valid, 28755 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:35,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19298 Valid, 28755 Invalid, 2616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 04:38:35,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20807 states. [2024-11-28 04:38:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20807 to 13791. [2024-11-28 04:38:36,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13791 states, 13789 states have (on average 1.2382333744288927) internal successors, (17074), 13790 states have internal predecessors, (17074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:36,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13791 states to 13791 states and 17074 transitions. [2024-11-28 04:38:36,731 INFO L78 Accepts]: Start accepts. Automaton has 13791 states and 17074 transitions. Word has length 103 [2024-11-28 04:38:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:36,731 INFO L471 AbstractCegarLoop]: Abstraction has 13791 states and 17074 transitions. [2024-11-28 04:38:36,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 13791 states and 17074 transitions. [2024-11-28 04:38:36,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 04:38:36,735 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:36,735 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:36,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:38:36,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:36,936 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:36,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:36,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1648355578, now seen corresponding path program 1 times [2024-11-28 04:38:36,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:36,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467722924] [2024-11-28 04:38:36,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:36,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:38:38,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:38,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467722924] [2024-11-28 04:38:38,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467722924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:38,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4383231] [2024-11-28 04:38:38,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:38,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:38,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:38,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:38,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:38:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:39,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:38:39,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:38:42,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:38:47,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4383231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:47,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:47,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 22] total 60 [2024-11-28 04:38:47,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833891462] [2024-11-28 04:38:47,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:47,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-28 04:38:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:47,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-28 04:38:47,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=3185, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:38:47,314 INFO L87 Difference]: Start difference. First operand 13791 states and 17074 transitions. Second operand has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:33,657 INFO L93 Difference]: Finished difference Result 23058 states and 28244 transitions. [2024-11-28 04:39:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-11-28 04:39:33,658 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 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 [2024-11-28 04:39:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:33,674 INFO L225 Difference]: With dead ends: 23058 [2024-11-28 04:39:33,674 INFO L226 Difference]: Without dead ends: 18950 [2024-11-28 04:39:33,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14376 ImplicationChecksByTransitivity, 44.7s TimeCoverageRelationStatistics Valid=6621, Invalid=39819, Unknown=0, NotChecked=0, Total=46440 [2024-11-28 04:39:33,685 INFO L435 NwaCegarLoop]: 1643 mSDtfsCounter, 34920 mSDsluCounter, 28847 mSDsCounter, 0 mSdLazyCounter, 3145 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34920 SdHoareTripleChecker+Valid, 30490 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:33,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34920 Valid, 30490 Invalid, 3289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [144 Valid, 3145 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 04:39:33,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18950 states. [2024-11-28 04:39:35,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18950 to 18037. [2024-11-28 04:39:35,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18037 states, 18035 states have (on average 1.228278347657333) internal successors, (22152), 18036 states have internal predecessors, (22152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:35,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18037 states to 18037 states and 22152 transitions. [2024-11-28 04:39:35,046 INFO L78 Accepts]: Start accepts. Automaton has 18037 states and 22152 transitions. Word has length 104 [2024-11-28 04:39:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:35,046 INFO L471 AbstractCegarLoop]: Abstraction has 18037 states and 22152 transitions. [2024-11-28 04:39:35,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 18037 states and 22152 transitions. [2024-11-28 04:39:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:39:35,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:35,050 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:35,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:39:35,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:35,254 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:35,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1812137019, now seen corresponding path program 1 times [2024-11-28 04:39:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:35,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481573787] [2024-11-28 04:39:35,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:35,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:39:37,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:37,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481573787] [2024-11-28 04:39:37,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481573787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:37,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006170897] [2024-11-28 04:39:37,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:37,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:37,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:37,775 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:37,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:39:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:37,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:39:37,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 21 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:39:39,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:39:42,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006170897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:39:42,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:39:42,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 14] total 52 [2024-11-28 04:39:42,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332020602] [2024-11-28 04:39:42,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:42,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-28 04:39:42,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:42,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-28 04:39:42,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2470, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 04:39:42,052 INFO L87 Difference]: Start difference. First operand 18037 states and 22152 transitions. Second operand has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:14,180 INFO L93 Difference]: Finished difference Result 36525 states and 44360 transitions. [2024-11-28 04:40:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-28 04:40:14,180 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 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 [2024-11-28 04:40:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:14,211 INFO L225 Difference]: With dead ends: 36525 [2024-11-28 04:40:14,211 INFO L226 Difference]: Without dead ends: 26023 [2024-11-28 04:40:14,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14627 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=6723, Invalid=38859, Unknown=0, NotChecked=0, Total=45582 [2024-11-28 04:40:14,222 INFO L435 NwaCegarLoop]: 1685 mSDtfsCounter, 20769 mSDsluCounter, 33214 mSDsCounter, 0 mSdLazyCounter, 4311 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20769 SdHoareTripleChecker+Valid, 34899 SdHoareTripleChecker+Invalid, 4501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:14,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20769 Valid, 34899 Invalid, 4501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 4311 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 04:40:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26023 states. [2024-11-28 04:40:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26023 to 21137. [2024-11-28 04:40:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21137 states, 21135 states have (on average 1.2229004021764844) internal successors, (25846), 21136 states have internal predecessors, (25846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21137 states to 21137 states and 25846 transitions. [2024-11-28 04:40:15,634 INFO L78 Accepts]: Start accepts. Automaton has 21137 states and 25846 transitions. Word has length 105 [2024-11-28 04:40:15,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:15,634 INFO L471 AbstractCegarLoop]: Abstraction has 21137 states and 25846 transitions. [2024-11-28 04:40:15,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:15,635 INFO L276 IsEmpty]: Start isEmpty. Operand 21137 states and 25846 transitions. [2024-11-28 04:40:15,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:40:15,637 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:15,638 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:15,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:40:15,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:15,838 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:15,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:15,839 INFO L85 PathProgramCache]: Analyzing trace with hash -867694025, now seen corresponding path program 1 times [2024-11-28 04:40:15,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:15,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123047710] [2024-11-28 04:40:15,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:15,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:17,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:17,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123047710] [2024-11-28 04:40:17,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123047710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:17,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122399562] [2024-11-28 04:40:17,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:17,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:17,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:17,310 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:17,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:40:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:17,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:40:17,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:21,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:40:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:24,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122399562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:40:24,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:40:24,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 52 [2024-11-28 04:40:24,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935952110] [2024-11-28 04:40:24,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:40:24,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-28 04:40:24,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:24,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-28 04:40:24,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2369, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 04:40:24,798 INFO L87 Difference]: Start difference. First operand 21137 states and 25846 transitions. Second operand has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:35,401 INFO L93 Difference]: Finished difference Result 34085 states and 41519 transitions. [2024-11-28 04:40:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 04:40:35,402 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 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 [2024-11-28 04:40:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:35,418 INFO L225 Difference]: With dead ends: 34085 [2024-11-28 04:40:35,418 INFO L226 Difference]: Without dead ends: 22688 [2024-11-28 04:40:35,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1719, Invalid=7787, Unknown=0, NotChecked=0, Total=9506 [2024-11-28 04:40:35,425 INFO L435 NwaCegarLoop]: 1583 mSDtfsCounter, 18426 mSDsluCounter, 33083 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18426 SdHoareTripleChecker+Valid, 34666 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:35,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18426 Valid, 34666 Invalid, 2330 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 04:40:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22688 states. [2024-11-28 04:40:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22688 to 19991. [2024-11-28 04:40:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19991 states, 19989 states have (on average 1.2179198559207565) internal successors, (24345), 19990 states have internal predecessors, (24345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19991 states to 19991 states and 24345 transitions. [2024-11-28 04:40:36,918 INFO L78 Accepts]: Start accepts. Automaton has 19991 states and 24345 transitions. Word has length 105 [2024-11-28 04:40:36,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:36,918 INFO L471 AbstractCegarLoop]: Abstraction has 19991 states and 24345 transitions. [2024-11-28 04:40:36,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:36,919 INFO L276 IsEmpty]: Start isEmpty. Operand 19991 states and 24345 transitions. [2024-11-28 04:40:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:40:36,921 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:36,921 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:36,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:40:37,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:40:37,122 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:37,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:37,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1706401868, now seen corresponding path program 1 times [2024-11-28 04:40:37,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:37,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200556342] [2024-11-28 04:40:37,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:37,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:39,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:39,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200556342] [2024-11-28 04:40:39,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200556342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:39,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510772932] [2024-11-28 04:40:39,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:39,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:39,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:39,156 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:39,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:40:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:39,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 04:40:39,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:42,471 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:40:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:47,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510772932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:40:47,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:40:47,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 19] total 61 [2024-11-28 04:40:47,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504876314] [2024-11-28 04:40:47,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:40:47,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-28 04:40:47,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:47,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-28 04:40:47,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3378, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 04:40:47,566 INFO L87 Difference]: Start difference. First operand 19991 states and 24345 transitions. Second operand has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:41:15,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:41:15,467 INFO L93 Difference]: Finished difference Result 41260 states and 49867 transitions. [2024-11-28 04:41:15,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-28 04:41:15,468 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 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 [2024-11-28 04:41:15,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:41:15,501 INFO L225 Difference]: With dead ends: 41260 [2024-11-28 04:41:15,501 INFO L226 Difference]: Without dead ends: 36805 [2024-11-28 04:41:15,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10235 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=5074, Invalid=28598, Unknown=0, NotChecked=0, Total=33672 [2024-11-28 04:41:15,510 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 27470 mSDsluCounter, 33918 mSDsCounter, 0 mSdLazyCounter, 3908 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27470 SdHoareTripleChecker+Valid, 35544 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:41:15,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27470 Valid, 35544 Invalid, 4019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [111 Valid, 3908 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 04:41:15,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36805 states. [2024-11-28 04:41:17,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36805 to 22361. [2024-11-28 04:41:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22361 states, 22359 states have (on average 1.2140972315398721) internal successors, (27146), 22360 states have internal predecessors, (27146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:41:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22361 states to 22361 states and 27146 transitions. [2024-11-28 04:41:17,528 INFO L78 Accepts]: Start accepts. Automaton has 22361 states and 27146 transitions. Word has length 106 [2024-11-28 04:41:17,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:41:17,528 INFO L471 AbstractCegarLoop]: Abstraction has 22361 states and 27146 transitions. [2024-11-28 04:41:17,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:41:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 22361 states and 27146 transitions. [2024-11-28 04:41:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:41:17,530 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:41:17,530 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:17,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:41:17,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:41:17,731 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:41:17,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:17,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1230557169, now seen corresponding path program 1 times [2024-11-28 04:41:17,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:17,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395050341] [2024-11-28 04:41:17,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:17,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395050341] [2024-11-28 04:41:18,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395050341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489361757] [2024-11-28 04:41:18,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:18,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:18,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:18,913 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:18,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:41:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:19,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 04:41:19,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:22,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:29,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489361757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:29,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:41:29,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 23] total 64 [2024-11-28 04:41:29,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462793553] [2024-11-28 04:41:29,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:29,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 04:41:29,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:29,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 04:41:29,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 04:41:29,936 INFO L87 Difference]: Start difference. First operand 22361 states and 27146 transitions. Second operand has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:04,247 INFO L93 Difference]: Finished difference Result 46849 states and 57051 transitions. [2024-11-28 04:42:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-28 04:42:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 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 [2024-11-28 04:42:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:04,280 INFO L225 Difference]: With dead ends: 46849 [2024-11-28 04:42:04,280 INFO L226 Difference]: Without dead ends: 38309 [2024-11-28 04:42:04,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8854 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=4930, Invalid=24140, Unknown=0, NotChecked=0, Total=29070 [2024-11-28 04:42:04,291 INFO L435 NwaCegarLoop]: 1580 mSDtfsCounter, 30423 mSDsluCounter, 34559 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30423 SdHoareTripleChecker+Valid, 36139 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:04,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30423 Valid, 36139 Invalid, 2746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [155 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 04:42:04,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38309 states. [2024-11-28 04:42:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38309 to 30081. [2024-11-28 04:42:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30081 states, 30079 states have (on average 1.2160311180557863) internal successors, (36577), 30080 states have internal predecessors, (36577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30081 states to 30081 states and 36577 transitions. [2024-11-28 04:42:08,339 INFO L78 Accepts]: Start accepts. Automaton has 30081 states and 36577 transitions. Word has length 107 [2024-11-28 04:42:08,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:08,340 INFO L471 AbstractCegarLoop]: Abstraction has 30081 states and 36577 transitions. [2024-11-28 04:42:08,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:08,340 INFO L276 IsEmpty]: Start isEmpty. Operand 30081 states and 36577 transitions. [2024-11-28 04:42:08,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:42:08,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:08,342 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:08,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:08,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:42:08,543 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:08,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash -667025751, now seen corresponding path program 1 times [2024-11-28 04:42:08,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:08,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753765479] [2024-11-28 04:42:08,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:08,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:10,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:10,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753765479] [2024-11-28 04:42:10,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753765479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:10,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292731603] [2024-11-28 04:42:10,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:10,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:10,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:10,380 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:10,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:42:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:10,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:42:10,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:12,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:15,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292731603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:15,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:15,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 16] total 51 [2024-11-28 04:42:15,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190889188] [2024-11-28 04:42:15,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:15,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 04:42:15,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:15,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 04:42:15,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2319, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 04:42:15,367 INFO L87 Difference]: Start difference. First operand 30081 states and 36577 transitions. Second operand has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:33,092 INFO L93 Difference]: Finished difference Result 95632 states and 116340 transitions. [2024-11-28 04:42:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-28 04:42:33,092 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 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 [2024-11-28 04:42:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:33,159 INFO L225 Difference]: With dead ends: 95632 [2024-11-28 04:42:33,159 INFO L226 Difference]: Without dead ends: 71221 [2024-11-28 04:42:33,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4636 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=3615, Invalid=13415, Unknown=0, NotChecked=0, Total=17030 [2024-11-28 04:42:33,172 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 27788 mSDsluCounter, 23221 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27788 SdHoareTripleChecker+Valid, 24772 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:33,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27788 Valid, 24772 Invalid, 2909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 04:42:33,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71221 states. [2024-11-28 04:42:38,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71221 to 40993. [2024-11-28 04:42:38,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40993 states, 40991 states have (on average 1.2140713815227733) internal successors, (49766), 40992 states have internal predecessors, (49766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:38,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40993 states to 40993 states and 49766 transitions. [2024-11-28 04:42:38,338 INFO L78 Accepts]: Start accepts. Automaton has 40993 states and 49766 transitions. Word has length 107 [2024-11-28 04:42:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:38,338 INFO L471 AbstractCegarLoop]: Abstraction has 40993 states and 49766 transitions. [2024-11-28 04:42:38,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 40993 states and 49766 transitions. [2024-11-28 04:42:38,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:42:38,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:38,340 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:38,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:42:38,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:42:38,541 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:38,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1782264045, now seen corresponding path program 1 times [2024-11-28 04:42:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:38,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722955240] [2024-11-28 04:42:38,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:38,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:39,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:39,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722955240] [2024-11-28 04:42:39,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722955240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:39,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984131885] [2024-11-28 04:42:39,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:39,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:39,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:39,319 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:39,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:42:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:39,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:42:39,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 52 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:40,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:42,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984131885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:42,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:42,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 35 [2024-11-28 04:42:42,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559372025] [2024-11-28 04:42:42,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:42,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:42:42,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:42,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:42:42,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:42:42,660 INFO L87 Difference]: Start difference. First operand 40993 states and 49766 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:51,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:51,816 INFO L93 Difference]: Finished difference Result 102217 states and 123406 transitions. [2024-11-28 04:42:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:42:51,817 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 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 [2024-11-28 04:42:51,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:51,892 INFO L225 Difference]: With dead ends: 102217 [2024-11-28 04:42:51,892 INFO L226 Difference]: Without dead ends: 69746 [2024-11-28 04:42:51,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=868, Invalid=3164, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 04:42:51,915 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 21473 mSDsluCounter, 14135 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21473 SdHoareTripleChecker+Valid, 15707 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:51,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21473 Valid, 15707 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:42:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69746 states. [2024-11-28 04:42:57,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69746 to 40063. [2024-11-28 04:42:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40063 states, 40061 states have (on average 1.2063603005416739) internal successors, (48328), 40062 states have internal predecessors, (48328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40063 states to 40063 states and 48328 transitions. [2024-11-28 04:42:57,229 INFO L78 Accepts]: Start accepts. Automaton has 40063 states and 48328 transitions. Word has length 107 [2024-11-28 04:42:57,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:57,230 INFO L471 AbstractCegarLoop]: Abstraction has 40063 states and 48328 transitions. [2024-11-28 04:42:57,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand 40063 states and 48328 transitions. [2024-11-28 04:42:57,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:42:57,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:57,232 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:57,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:42:57,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:57,432 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:57,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:57,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1616506483, now seen corresponding path program 1 times [2024-11-28 04:42:57,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:57,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477998197] [2024-11-28 04:42:57,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:57,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:58,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:58,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477998197] [2024-11-28 04:42:58,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477998197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:58,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12378216] [2024-11-28 04:42:58,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:58,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:58,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:58,193 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:58,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:42:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:58,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:42:58,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:59,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:01,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12378216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:01,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:01,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 35 [2024-11-28 04:43:01,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599389665] [2024-11-28 04:43:01,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:01,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:43:01,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:01,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:43:01,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:43:01,501 INFO L87 Difference]: Start difference. First operand 40063 states and 48328 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:10,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:10,819 INFO L93 Difference]: Finished difference Result 90523 states and 108769 transitions. [2024-11-28 04:43:10,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 04:43:10,819 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 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 [2024-11-28 04:43:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:10,894 INFO L225 Difference]: With dead ends: 90523 [2024-11-28 04:43:10,895 INFO L226 Difference]: Without dead ends: 55808 [2024-11-28 04:43:10,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1412, Invalid=5068, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 04:43:10,916 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 24684 mSDsluCounter, 16045 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24684 SdHoareTripleChecker+Valid, 17606 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:10,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24684 Valid, 17606 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:43:10,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55808 states. [2024-11-28 04:43:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55808 to 36391. [2024-11-28 04:43:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36391 states, 36389 states have (on average 1.2096512682404024) internal successors, (44018), 36390 states have internal predecessors, (44018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36391 states to 36391 states and 44018 transitions. [2024-11-28 04:43:14,983 INFO L78 Accepts]: Start accepts. Automaton has 36391 states and 44018 transitions. Word has length 107 [2024-11-28 04:43:14,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:14,983 INFO L471 AbstractCegarLoop]: Abstraction has 36391 states and 44018 transitions. [2024-11-28 04:43:14,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 36391 states and 44018 transitions. [2024-11-28 04:43:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-28 04:43:14,986 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:14,986 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:14,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:43:15,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:15,190 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:15,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:15,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1360617744, now seen corresponding path program 1 times [2024-11-28 04:43:15,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:15,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351218837] [2024-11-28 04:43:15,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:15,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:17,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:17,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351218837] [2024-11-28 04:43:17,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351218837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:17,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168419984] [2024-11-28 04:43:17,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:17,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:17,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:17,147 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:17,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:43:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:17,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 04:43:17,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:21,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:30,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168419984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:30,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:30,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 25] total 66 [2024-11-28 04:43:30,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610609584] [2024-11-28 04:43:30,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:30,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-28 04:43:30,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:30,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-28 04:43:30,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=3981, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 04:43:30,740 INFO L87 Difference]: Start difference. First operand 36391 states and 44018 transitions. Second operand has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 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) [2024-11-28 04:47:45,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:45,249 INFO L93 Difference]: Finished difference Result 156945 states and 188340 transitions. [2024-11-28 04:47:45,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2024-11-28 04:47:45,250 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 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 108 [2024-11-28 04:47:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:45,406 INFO L225 Difference]: With dead ends: 156945 [2024-11-28 04:47:45,406 INFO L226 Difference]: Without dead ends: 145618 [2024-11-28 04:47:45,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90463 ImplicationChecksByTransitivity, 221.2s TimeCoverageRelationStatistics Valid=34766, Invalid=164596, Unknown=0, NotChecked=0, Total=199362 [2024-11-28 04:47:45,430 INFO L435 NwaCegarLoop]: 1708 mSDtfsCounter, 32928 mSDsluCounter, 44016 mSDsCounter, 0 mSdLazyCounter, 9247 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32928 SdHoareTripleChecker+Valid, 45724 SdHoareTripleChecker+Invalid, 9555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 9247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:45,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32928 Valid, 45724 Invalid, 9555 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [308 Valid, 9247 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2024-11-28 04:47:45,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145618 states. [2024-11-28 04:47:51,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145618 to 36776. [2024-11-28 04:47:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36776 states, 36774 states have (on average 1.209985315712188) internal successors, (44496), 36775 states have internal predecessors, (44496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36776 states to 36776 states and 44496 transitions. [2024-11-28 04:47:51,121 INFO L78 Accepts]: Start accepts. Automaton has 36776 states and 44496 transitions. Word has length 108 [2024-11-28 04:47:51,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:51,121 INFO L471 AbstractCegarLoop]: Abstraction has 36776 states and 44496 transitions. [2024-11-28 04:47:51,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 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) [2024-11-28 04:47:51,121 INFO L276 IsEmpty]: Start isEmpty. Operand 36776 states and 44496 transitions. [2024-11-28 04:47:51,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-28 04:47:51,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:51,122 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:51,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:47:51,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 04:47:51,323 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:51,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash -516880752, now seen corresponding path program 1 times [2024-11-28 04:47:51,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:51,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253956757] [2024-11-28 04:47:51,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:51,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:53,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:53,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253956757] [2024-11-28 04:47:53,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253956757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:53,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600847878] [2024-11-28 04:47:53,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:53,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:53,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:53,970 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:53,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1abe184-fd92-4914-ab57-5ea2f92d4393/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:47:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:54,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 04:47:54,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:58,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:02,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600847878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:02,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 22] total 69 [2024-11-28 04:48:02,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126280515] [2024-11-28 04:48:02,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:02,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-28 04:48:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:02,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-28 04:48:02,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=4295, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 04:48:02,998 INFO L87 Difference]: Start difference. First operand 36776 states and 44496 transitions. Second operand has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)