./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.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_59eff46e-228a-459f-9bcd-eda8095e2693/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/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_59eff46e-228a-459f-9bcd-eda8095e2693/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/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_59eff46e-228a-459f-9bcd-eda8095e2693/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 254b993103fdf4bf9ce113a41b03b165c45b47461a75aeb8bd9480761428c91e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:26:31,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:26:31,205 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:26:31,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:26:31,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:26:31,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:26:31,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:26:31,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:26:31,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:26:31,241 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:26:31,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:26:31,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:26:31,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:26:31,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:26:31,242 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:26:31,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:26:31,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:26:31,242 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:26:31,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:26:31,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:26:31,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:26:31,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:26:31,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:26:31,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:26:31,244 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:26:31,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:26:31,244 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:26:31,244 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:26:31,244 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:26:31,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:31,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:31,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:31,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:31,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:26:31,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:31,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:31,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:31,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:31,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:26:31,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:26:31,246 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:26:31,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:26:31,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:26:31,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:26:31,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:26:31,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:26:31,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:26:31,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:26:31,247 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_59eff46e-228a-459f-9bcd-eda8095e2693/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 -> 254b993103fdf4bf9ce113a41b03b165c45b47461a75aeb8bd9480761428c91e [2024-11-28 03:26:31,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:26:31,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:26:31,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:26:31,567 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:26:31,567 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:26:31,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.c [2024-11-28 03:26:34,560 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/bin/uautomizer-verify-aQ6SnzHsRB/data/1ed552889/d8bdb3362ae4462aac87b8f39758e93c/FLAG7a797a653 [2024-11-28 03:26:35,651 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:26:35,651 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.c [2024-11-28 03:26:35,711 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/bin/uautomizer-verify-aQ6SnzHsRB/data/1ed552889/d8bdb3362ae4462aac87b8f39758e93c/FLAG7a797a653 [2024-11-28 03:26:35,737 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/bin/uautomizer-verify-aQ6SnzHsRB/data/1ed552889/d8bdb3362ae4462aac87b8f39758e93c [2024-11-28 03:26:35,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:26:35,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:26:35,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:35,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:26:35,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:26:35,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:35" (1/1) ... [2024-11-28 03:26:35,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d63fc07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:35, skipping insertion in model container [2024-11-28 03:26:35,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:35" (1/1) ... [2024-11-28 03:26:35,981 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:26:38,226 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_59eff46e-228a-459f-9bcd-eda8095e2693/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.c[378560,378573] [2024-11-28 03:26:38,288 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_59eff46e-228a-459f-9bcd-eda8095e2693/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.c[383339,383352] [2024-11-28 03:26:38,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:38,562 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:26:39,738 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_59eff46e-228a-459f-9bcd-eda8095e2693/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.c[378560,378573] [2024-11-28 03:26:39,743 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_59eff46e-228a-459f-9bcd-eda8095e2693/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.c[383339,383352] [2024-11-28 03:26:39,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:39,824 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:26:39,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39 WrapperNode [2024-11-28 03:26:39,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:39,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:39,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:26:39,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:26:39,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:39,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:40,361 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12863 [2024-11-28 03:26:40,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:40,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:26:40,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:26:40,363 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:26:40,375 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:40,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:40,422 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:40,665 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 03:26:40,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:40,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:40,880 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:40,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:40,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:41,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:41,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:41,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:26:41,102 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:26:41,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:26:41,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:26:41,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (1/1) ... [2024-11-28 03:26:41,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:41,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:41,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:26:41,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59eff46e-228a-459f-9bcd-eda8095e2693/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:26:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:26:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-28 03:26:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-28 03:26:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-28 03:26:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-28 03:26:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-28 03:26:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-28 03:26:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-28 03:26:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-28 03:26:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-28 03:26:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-28 03:26:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-28 03:26:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-28 03:26:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:26:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:26:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:26:41,362 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:26:41,364 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:26:53,937 INFO L? ?]: Removed 1719 outVars from TransFormulas that were not future-live. [2024-11-28 03:26:53,938 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:26:54,037 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:26:54,038 INFO L312 CfgBuilder]: Removed 20 assume(true) statements. [2024-11-28 03:26:54,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:54 BoogieIcfgContainer [2024-11-28 03:26:54,039 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:26:54,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:26:54,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:26:54,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:26:54,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:26:35" (1/3) ... [2024-11-28 03:26:54,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7619dd6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:54, skipping insertion in model container [2024-11-28 03:26:54,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:39" (2/3) ... [2024-11-28 03:26:54,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7619dd6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:54, skipping insertion in model container [2024-11-28 03:26:54,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:54" (3/3) ... [2024-11-28 03:26:54,058 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.06.cil-2.c [2024-11-28 03:26:54,078 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:26:54,083 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label42+token_ring.06.cil-2.c that has 7 procedures, 2413 locations, 1 initial locations, 10 loop locations, and 2 error locations. [2024-11-28 03:26:54,255 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:26:54,268 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;@6b102d4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:26:54,268 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 03:26:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 2413 states, 2385 states have (on average 1.851153039832285) internal successors, (4415), 2387 states have internal predecessors, (4415), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:26:54,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:26:54,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:54,302 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:54,303 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:54,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:54,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1042476488, now seen corresponding path program 1 times [2024-11-28 03:26:54,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:54,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569927529] [2024-11-28 03:26:54,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:54,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:54,831 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 03:26:54,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:54,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569927529] [2024-11-28 03:26:54,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569927529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:54,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:54,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:54,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604263362] [2024-11-28 03:26:54,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:54,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:54,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:54,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:54,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:54,888 INFO L87 Difference]: Start difference. First operand has 2413 states, 2385 states have (on average 1.851153039832285) internal successors, (4415), 2387 states have internal predecessors, (4415), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:26:55,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:55,198 INFO L93 Difference]: Finished difference Result 4816 states and 8891 transitions. [2024-11-28 03:26:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:55,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-28 03:26:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:55,240 INFO L225 Difference]: With dead ends: 4816 [2024-11-28 03:26:55,240 INFO L226 Difference]: Without dead ends: 2346 [2024-11-28 03:26:55,256 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 03:26:55,262 INFO L435 NwaCegarLoop]: 4372 mSDtfsCounter, 341 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 8394 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:55,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 8394 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:26:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2024-11-28 03:26:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2346. [2024-11-28 03:26:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2318 states have (on average 1.8395168248490077) internal successors, (4264), 2320 states have internal predecessors, (4264), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:26:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 4304 transitions. [2024-11-28 03:26:55,479 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 4304 transitions. Word has length 110 [2024-11-28 03:26:55,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:55,481 INFO L471 AbstractCegarLoop]: Abstraction has 2346 states and 4304 transitions. [2024-11-28 03:26:55,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:26:55,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 4304 transitions. [2024-11-28 03:26:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:26:55,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:55,486 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:55,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:26:55,487 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:55,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:55,488 INFO L85 PathProgramCache]: Analyzing trace with hash -558594618, now seen corresponding path program 1 times [2024-11-28 03:26:55,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:55,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709880711] [2024-11-28 03:26:55,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:55,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:56,079 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 03:26:56,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:56,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709880711] [2024-11-28 03:26:56,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709880711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:56,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:56,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:26:56,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786668369] [2024-11-28 03:26:56,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:56,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:56,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:56,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:56,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:56,085 INFO L87 Difference]: Start difference. First operand 2346 states and 4304 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:26:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:57,181 INFO L93 Difference]: Finished difference Result 2808 states and 5037 transitions. [2024-11-28 03:26:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:26:57,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-28 03:26:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:57,199 INFO L225 Difference]: With dead ends: 2808 [2024-11-28 03:26:57,200 INFO L226 Difference]: Without dead ends: 2597 [2024-11-28 03:26:57,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:26:57,205 INFO L435 NwaCegarLoop]: 4406 mSDtfsCounter, 4594 mSDsluCounter, 13294 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 17700 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:57,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4608 Valid, 17700 Invalid, 734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:26:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2024-11-28 03:26:57,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2567. [2024-11-28 03:26:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2567 states, 2514 states have (on average 1.819013524264121) internal successors, (4573), 2518 states have internal predecessors, (4573), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2024-11-28 03:26:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2567 states to 2567 states and 4654 transitions. [2024-11-28 03:26:57,321 INFO L78 Accepts]: Start accepts. Automaton has 2567 states and 4654 transitions. Word has length 110 [2024-11-28 03:26:57,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:57,322 INFO L471 AbstractCegarLoop]: Abstraction has 2567 states and 4654 transitions. [2024-11-28 03:26:57,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:26:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2567 states and 4654 transitions. [2024-11-28 03:26:57,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:26:57,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:57,330 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:57,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:26:57,330 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:57,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:57,335 INFO L85 PathProgramCache]: Analyzing trace with hash -587094908, now seen corresponding path program 1 times [2024-11-28 03:26:57,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:57,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983330129] [2024-11-28 03:26:57,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:57,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:57,641 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 03:26:57,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:57,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983330129] [2024-11-28 03:26:57,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983330129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:57,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:57,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:26:57,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227009102] [2024-11-28 03:26:57,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:57,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:57,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:57,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:57,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:57,643 INFO L87 Difference]: Start difference. First operand 2567 states and 4654 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:26:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:58,722 INFO L93 Difference]: Finished difference Result 3470 states and 6086 transitions. [2024-11-28 03:26:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:26:58,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-28 03:26:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:58,739 INFO L225 Difference]: With dead ends: 3470 [2024-11-28 03:26:58,739 INFO L226 Difference]: Without dead ends: 3040 [2024-11-28 03:26:58,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:26:58,747 INFO L435 NwaCegarLoop]: 4345 mSDtfsCounter, 4590 mSDsluCounter, 13142 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4604 SdHoareTripleChecker+Valid, 17487 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:58,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4604 Valid, 17487 Invalid, 690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:26:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2024-11-28 03:26:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2999. [2024-11-28 03:26:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2900 states have (on average 1.7855172413793103) internal successors, (5178), 2908 states have internal predecessors, (5178), 67 states have call successors, (67), 24 states have call predecessors, (67), 30 states have return successors, (90), 70 states have call predecessors, (90), 67 states have call successors, (90) [2024-11-28 03:26:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 5335 transitions. [2024-11-28 03:26:58,891 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 5335 transitions. Word has length 110 [2024-11-28 03:26:58,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:58,892 INFO L471 AbstractCegarLoop]: Abstraction has 2999 states and 5335 transitions. [2024-11-28 03:26:58,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:26:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 5335 transitions. [2024-11-28 03:26:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:26:58,896 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:58,897 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:58,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:26:58,897 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:58,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:58,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1767290374, now seen corresponding path program 1 times [2024-11-28 03:26:58,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:58,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243623954] [2024-11-28 03:26:58,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:58,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:59,164 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 03:26:59,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:59,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243623954] [2024-11-28 03:26:59,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243623954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:59,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:59,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:26:59,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529346853] [2024-11-28 03:26:59,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:59,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:59,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:59,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:59,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:59,168 INFO L87 Difference]: Start difference. First operand 2999 states and 5335 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:27:00,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:00,091 INFO L93 Difference]: Finished difference Result 4855 states and 8313 transitions. [2024-11-28 03:27:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:27:00,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-28 03:27:00,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:00,113 INFO L225 Difference]: With dead ends: 4855 [2024-11-28 03:27:00,114 INFO L226 Difference]: Without dead ends: 3993 [2024-11-28 03:27:00,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:27:00,119 INFO L435 NwaCegarLoop]: 4398 mSDtfsCounter, 4584 mSDsluCounter, 13258 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4598 SdHoareTripleChecker+Valid, 17656 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:00,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4598 Valid, 17656 Invalid, 731 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:27:00,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3993 states. [2024-11-28 03:27:00,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3993 to 3931. [2024-11-28 03:27:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 3734 states have (on average 1.741831815747188) internal successors, (6504), 3756 states have internal predecessors, (6504), 127 states have call successors, (127), 48 states have call predecessors, (127), 68 states have return successors, (206), 134 states have call predecessors, (206), 127 states have call successors, (206) [2024-11-28 03:27:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 6837 transitions. [2024-11-28 03:27:00,306 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 6837 transitions. Word has length 110 [2024-11-28 03:27:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:00,306 INFO L471 AbstractCegarLoop]: Abstraction has 3931 states and 6837 transitions. [2024-11-28 03:27:00,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:27:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 6837 transitions. [2024-11-28 03:27:00,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:27:00,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:00,310 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:00,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:27:00,311 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:00,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:00,311 INFO L85 PathProgramCache]: Analyzing trace with hash -650613692, now seen corresponding path program 1 times [2024-11-28 03:27:00,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:00,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596024337] [2024-11-28 03:27:00,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:00,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:00,504 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 03:27:00,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:00,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596024337] [2024-11-28 03:27:00,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596024337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:00,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:00,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:27:00,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575912387] [2024-11-28 03:27:00,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:00,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:27:00,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:00,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:27:00,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:00,507 INFO L87 Difference]: Start difference. First operand 3931 states and 6837 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:27:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:01,473 INFO L93 Difference]: Finished difference Result 7878 states and 13315 transitions. [2024-11-28 03:27:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:27:01,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-28 03:27:01,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:01,509 INFO L225 Difference]: With dead ends: 7878 [2024-11-28 03:27:01,509 INFO L226 Difference]: Without dead ends: 6084 [2024-11-28 03:27:01,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:27:01,518 INFO L435 NwaCegarLoop]: 4396 mSDtfsCounter, 4579 mSDsluCounter, 13246 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4593 SdHoareTripleChecker+Valid, 17642 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:01,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4593 Valid, 17642 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:27:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6084 states. [2024-11-28 03:27:01,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 5983. [2024-11-28 03:27:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5983 states, 5572 states have (on average 1.7002871500358938) internal successors, (9474), 5640 states have internal predecessors, (9474), 247 states have call successors, (247), 96 states have call predecessors, (247), 162 states have return successors, (534), 262 states have call predecessors, (534), 247 states have call successors, (534) [2024-11-28 03:27:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5983 states to 5983 states and 10255 transitions. [2024-11-28 03:27:01,869 INFO L78 Accepts]: Start accepts. Automaton has 5983 states and 10255 transitions. Word has length 110 [2024-11-28 03:27:01,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:01,870 INFO L471 AbstractCegarLoop]: Abstraction has 5983 states and 10255 transitions. [2024-11-28 03:27:01,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:27:01,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5983 states and 10255 transitions. [2024-11-28 03:27:01,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:27:01,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:01,877 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:01,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:27:01,877 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:01,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:01,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1421347258, now seen corresponding path program 1 times [2024-11-28 03:27:01,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:01,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661097539] [2024-11-28 03:27:01,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:01,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:02,056 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 03:27:02,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:02,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661097539] [2024-11-28 03:27:02,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661097539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:02,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:02,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:27:02,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36602090] [2024-11-28 03:27:02,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:02,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:27:02,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:02,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:27:02,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:02,058 INFO L87 Difference]: Start difference. First operand 5983 states and 10255 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:27:03,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:03,246 INFO L93 Difference]: Finished difference Result 14617 states and 24957 transitions. [2024-11-28 03:27:03,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:27:03,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-28 03:27:03,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:03,337 INFO L225 Difference]: With dead ends: 14617 [2024-11-28 03:27:03,338 INFO L226 Difference]: Without dead ends: 10771 [2024-11-28 03:27:03,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:27:03,356 INFO L435 NwaCegarLoop]: 4393 mSDtfsCounter, 4574 mSDsluCounter, 13233 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4588 SdHoareTripleChecker+Valid, 17626 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:03,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4588 Valid, 17626 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:27:03,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2024-11-28 03:27:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 10599. [2024-11-28 03:27:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10599 states, 9706 states have (on average 1.6760766536163199) internal successors, (16268), 9920 states have internal predecessors, (16268), 487 states have call successors, (487), 192 states have call predecessors, (487), 404 states have return successors, (1574), 518 states have call predecessors, (1574), 487 states have call successors, (1574) [2024-11-28 03:27:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10599 states to 10599 states and 18329 transitions. [2024-11-28 03:27:03,973 INFO L78 Accepts]: Start accepts. Automaton has 10599 states and 18329 transitions. Word has length 110 [2024-11-28 03:27:03,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:03,974 INFO L471 AbstractCegarLoop]: Abstraction has 10599 states and 18329 transitions. [2024-11-28 03:27:03,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:27:03,976 INFO L276 IsEmpty]: Start isEmpty. Operand 10599 states and 18329 transitions. [2024-11-28 03:27:03,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:27:03,987 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:03,989 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:03,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:27:03,989 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:03,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:03,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1878926340, now seen corresponding path program 1 times [2024-11-28 03:27:03,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:03,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408040224] [2024-11-28 03:27:03,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:03,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:04,189 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 03:27:04,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:04,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408040224] [2024-11-28 03:27:04,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408040224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:04,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:04,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:27:04,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501312377] [2024-11-28 03:27:04,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:04,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:27:04,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:04,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:27:04,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:04,193 INFO L87 Difference]: Start difference. First operand 10599 states and 18329 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:27:05,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:05,795 INFO L93 Difference]: Finished difference Result 29968 states and 53235 transitions. [2024-11-28 03:27:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:27:05,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-28 03:27:05,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:05,921 INFO L225 Difference]: With dead ends: 29968 [2024-11-28 03:27:05,921 INFO L226 Difference]: Without dead ends: 21506 [2024-11-28 03:27:05,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:27:05,967 INFO L435 NwaCegarLoop]: 4392 mSDtfsCounter, 4569 mSDsluCounter, 13222 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4583 SdHoareTripleChecker+Valid, 17614 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:05,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4583 Valid, 17614 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:27:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21506 states. [2024-11-28 03:27:07,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21506 to 21207. [2024-11-28 03:27:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21207 states, 19188 states have (on average 1.6732332707942463) internal successors, (32106), 19856 states have internal predecessors, (32106), 967 states have call successors, (967), 384 states have call predecessors, (967), 1050 states have return successors, (5190), 1030 states have call predecessors, (5190), 967 states have call successors, (5190) [2024-11-28 03:27:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21207 states to 21207 states and 38263 transitions. [2024-11-28 03:27:07,608 INFO L78 Accepts]: Start accepts. Automaton has 21207 states and 38263 transitions. Word has length 110 [2024-11-28 03:27:07,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:07,610 INFO L471 AbstractCegarLoop]: Abstraction has 21207 states and 38263 transitions. [2024-11-28 03:27:07,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:27:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 21207 states and 38263 transitions. [2024-11-28 03:27:07,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:27:07,627 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:07,628 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:07,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:27:07,628 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:07,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:07,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1292650118, now seen corresponding path program 1 times [2024-11-28 03:27:07,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:07,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301206929] [2024-11-28 03:27:07,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:07,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:07,802 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 03:27:07,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:07,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301206929] [2024-11-28 03:27:07,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301206929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:07,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:07,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:27:07,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468416560] [2024-11-28 03:27:07,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:07,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:27:07,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:07,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:27:07,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:07,804 INFO L87 Difference]: Start difference. First operand 21207 states and 38263 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:27:10,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:10,459 INFO L93 Difference]: Finished difference Result 68667 states and 130002 transitions. [2024-11-28 03:27:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:27:10,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-28 03:27:10,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:10,772 INFO L225 Difference]: With dead ends: 68667 [2024-11-28 03:27:10,772 INFO L226 Difference]: Without dead ends: 49597 [2024-11-28 03:27:10,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:27:10,850 INFO L435 NwaCegarLoop]: 4387 mSDtfsCounter, 4758 mSDsluCounter, 13198 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4779 SdHoareTripleChecker+Valid, 17585 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:10,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4779 Valid, 17585 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:27:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49597 states. [2024-11-28 03:27:14,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49597 to 45875. [2024-11-28 03:27:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45875 states, 41182 states have (on average 1.6864649604196007) internal successors, (69452), 43244 states have internal predecessors, (69452), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 2828 states have return successors, (18502), 1990 states have call predecessors, (18502), 1863 states have call successors, (18502) [2024-11-28 03:27:14,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45875 states to 45875 states and 89817 transitions. [2024-11-28 03:27:14,949 INFO L78 Accepts]: Start accepts. Automaton has 45875 states and 89817 transitions. Word has length 110 [2024-11-28 03:27:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:14,949 INFO L471 AbstractCegarLoop]: Abstraction has 45875 states and 89817 transitions. [2024-11-28 03:27:14,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:27:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 45875 states and 89817 transitions. [2024-11-28 03:27:14,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:27:14,982 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:14,982 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:14,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:27:14,983 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:14,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:14,986 INFO L85 PathProgramCache]: Analyzing trace with hash -665924668, now seen corresponding path program 1 times [2024-11-28 03:27:14,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:14,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648523867] [2024-11-28 03:27:14,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:14,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:15,178 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 03:27:15,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:15,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648523867] [2024-11-28 03:27:15,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648523867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:15,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:15,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:27:15,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354408737] [2024-11-28 03:27:15,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:15,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:27:15,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:15,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:27:15,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:15,185 INFO L87 Difference]: Start difference. First operand 45875 states and 89817 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:27:20,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:20,132 INFO L93 Difference]: Finished difference Result 151431 states and 321874 transitions. [2024-11-28 03:27:20,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:27:20,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-28 03:27:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:21,028 INFO L225 Difference]: With dead ends: 151431 [2024-11-28 03:27:21,028 INFO L226 Difference]: Without dead ends: 107693 [2024-11-28 03:27:21,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:27:21,479 INFO L435 NwaCegarLoop]: 4381 mSDtfsCounter, 4690 mSDsluCounter, 13172 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4711 SdHoareTripleChecker+Valid, 17553 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:21,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4711 Valid, 17553 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:27:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107693 states.