./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.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_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/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_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/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_d162ed18-8303-4c70-aaab-5bbaf6f23414/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 39b635cc2ab0f0d4f8e606a07f9fc2cea48a2218c52549f8b5aa54058d2e5b4b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:25:26,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:25:26,847 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:25:26,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:25:26,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:25:26,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:25:26,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:25:26,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:25:26,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:25:26,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:25:26,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:25:26,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:25:26,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:25:26,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:25:26,893 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:25:26,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:25:26,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:25:26,895 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:25:26,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:25:26,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:25:26,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:25:26,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:25:26,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:25:26,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:25:26,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:25:26,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:25:26,896 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:25:26,897 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:25:26,897 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:25:26,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:25:26,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:25:26,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:25:26,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:25:26,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:25:26,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:25:26,899 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:25:26,900 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:25:26,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:25:26,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:25:26,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:25:26,900 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:25:26,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:25:26,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:25:26,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:25:26,901 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:25:26,901 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:25:26,901 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:25:26,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:25:26,901 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_d162ed18-8303-4c70-aaab-5bbaf6f23414/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 -> 39b635cc2ab0f0d4f8e606a07f9fc2cea48a2218c52549f8b5aa54058d2e5b4b [2024-11-28 04:25:27,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:25:27,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:25:27,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:25:27,286 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:25:27,287 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:25:27,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2024-11-28 04:25:31,134 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/data/b77e55670/120784b7d511458c9d25306df66c79c2/FLAG6045853bd [2024-11-28 04:25:31,604 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:25:31,604 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2024-11-28 04:25:31,641 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/data/b77e55670/120784b7d511458c9d25306df66c79c2/FLAG6045853bd [2024-11-28 04:25:31,669 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/data/b77e55670/120784b7d511458c9d25306df66c79c2 [2024-11-28 04:25:31,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:25:31,676 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:25:31,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:25:31,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:25:31,686 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:25:31,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:25:31" (1/1) ... [2024-11-28 04:25:31,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3495e94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:31, skipping insertion in model container [2024-11-28 04:25:31,691 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:25:31" (1/1) ... [2024-11-28 04:25:31,768 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:25:32,004 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_d162ed18-8303-4c70-aaab-5bbaf6f23414/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c[914,927] [2024-11-28 04:25:32,084 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_d162ed18-8303-4c70-aaab-5bbaf6f23414/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c[7115,7128] [2024-11-28 04:25:32,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:25:32,323 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:25:32,337 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_d162ed18-8303-4c70-aaab-5bbaf6f23414/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c[914,927] [2024-11-28 04:25:32,386 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_d162ed18-8303-4c70-aaab-5bbaf6f23414/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c[7115,7128] [2024-11-28 04:25:32,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:25:32,496 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:25:32,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32 WrapperNode [2024-11-28 04:25:32,497 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:25:32,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:25:32,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:25:32,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:25:32,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,584 INFO L138 Inliner]: procedures = 71, calls = 85, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 878 [2024-11-28 04:25:32,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:25:32,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:25:32,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:25:32,586 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:25:32,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,610 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,655 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:25:32,659 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,659 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,688 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:25:32,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:25:32,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:25:32,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:25:32,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (1/1) ... [2024-11-28 04:25:32,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:25:32,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:32,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:32,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:25:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:25:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-28 04:25:32,845 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-28 04:25:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-28 04:25:32,846 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-28 04:25:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-28 04:25:32,846 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-28 04:25:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-28 04:25:32,847 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-28 04:25:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-28 04:25:32,847 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-28 04:25:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-28 04:25:32,848 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-28 04:25:32,849 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-28 04:25:32,849 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-28 04:25:32,850 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-28 04:25:32,850 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-28 04:25:32,851 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-28 04:25:32,851 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-28 04:25:32,851 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-28 04:25:32,852 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-28 04:25:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-28 04:25:32,852 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-28 04:25:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:25:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-28 04:25:32,855 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-28 04:25:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-28 04:25:32,856 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-28 04:25:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:25:32,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:25:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-28 04:25:32,856 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-28 04:25:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-28 04:25:32,856 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-28 04:25:33,075 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:25:33,078 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:25:34,556 INFO L? ?]: Removed 113 outVars from TransFormulas that were not future-live. [2024-11-28 04:25:34,556 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:25:34,595 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:25:34,599 INFO L312 CfgBuilder]: Removed 32 assume(true) statements. [2024-11-28 04:25:34,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:25:34 BoogieIcfgContainer [2024-11-28 04:25:34,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:25:34,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:25:34,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:25:34,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:25:34,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:25:31" (1/3) ... [2024-11-28 04:25:34,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c762b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:25:34, skipping insertion in model container [2024-11-28 04:25:34,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:32" (2/3) ... [2024-11-28 04:25:34,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c762b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:25:34, skipping insertion in model container [2024-11-28 04:25:34,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:25:34" (3/3) ... [2024-11-28 04:25:34,621 INFO L128 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2024-11-28 04:25:34,642 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:25:34,649 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pc_sfifo_2.cil-1+token_ring.09.cil-2.c that has 16 procedures, 410 locations, 1 initial locations, 16 loop locations, and 2 error locations. [2024-11-28 04:25:34,772 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:25:34,793 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;@281345df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:25:34,794 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:25:34,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 355 states have (on average 1.6338028169014085) internal successors, (580), 361 states have internal predecessors, (580), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-28 04:25:34,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:25:34,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:34,818 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] [2024-11-28 04:25:34,819 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:34,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:34,828 INFO L85 PathProgramCache]: Analyzing trace with hash -953557185, now seen corresponding path program 1 times [2024-11-28 04:25:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:34,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969050054] [2024-11-28 04:25:34,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:34,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:35,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:35,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969050054] [2024-11-28 04:25:35,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969050054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:35,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:35,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:25:35,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097268014] [2024-11-28 04:25:35,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:35,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:25:35,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:35,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:25:35,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:25:35,695 INFO L87 Difference]: Start difference. First operand has 410 states, 355 states have (on average 1.6338028169014085) internal successors, (580), 361 states have internal predecessors, (580), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:25:37,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:37,259 INFO L93 Difference]: Finished difference Result 893 states and 1430 transitions. [2024-11-28 04:25:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:25:37,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 04:25:37,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:37,293 INFO L225 Difference]: With dead ends: 893 [2024-11-28 04:25:37,293 INFO L226 Difference]: Without dead ends: 498 [2024-11-28 04:25:37,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:25:37,308 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 417 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:37,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1315 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:25:37,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-28 04:25:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 491. [2024-11-28 04:25:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 417 states have (on average 1.5275779376498801) internal successors, (637), 424 states have internal predecessors, (637), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (51), 47 states have call predecessors, (51), 46 states have call successors, (51) [2024-11-28 04:25:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 738 transitions. [2024-11-28 04:25:37,460 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 738 transitions. Word has length 62 [2024-11-28 04:25:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:37,461 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 738 transitions. [2024-11-28 04:25:37,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:25:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 738 transitions. [2024-11-28 04:25:37,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:25:37,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:37,466 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] [2024-11-28 04:25:37,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:25:37,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:37,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:37,471 INFO L85 PathProgramCache]: Analyzing trace with hash -750221185, now seen corresponding path program 1 times [2024-11-28 04:25:37,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:37,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178477854] [2024-11-28 04:25:37,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:37,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:37,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178477854] [2024-11-28 04:25:37,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178477854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:37,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:37,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:25:37,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542575723] [2024-11-28 04:25:37,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:37,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:25:37,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:37,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:25:37,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:25:37,895 INFO L87 Difference]: Start difference. First operand 491 states and 738 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:25:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:39,448 INFO L93 Difference]: Finished difference Result 796 states and 1157 transitions. [2024-11-28 04:25:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:25:39,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 04:25:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:39,455 INFO L225 Difference]: With dead ends: 796 [2024-11-28 04:25:39,456 INFO L226 Difference]: Without dead ends: 627 [2024-11-28 04:25:39,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 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 04:25:39,459 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 875 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:39,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1491 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:25:39,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2024-11-28 04:25:39,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 583. [2024-11-28 04:25:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 489 states have (on average 1.507157464212679) internal successors, (737), 498 states have internal predecessors, (737), 61 states have call successors, (61), 29 states have call predecessors, (61), 31 states have return successors, (70), 59 states have call predecessors, (70), 57 states have call successors, (70) [2024-11-28 04:25:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 868 transitions. [2024-11-28 04:25:39,548 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 868 transitions. Word has length 62 [2024-11-28 04:25:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:39,551 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 868 transitions. [2024-11-28 04:25:39,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:25:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 868 transitions. [2024-11-28 04:25:39,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:25:39,559 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:39,559 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] [2024-11-28 04:25:39,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:25:39,560 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:39,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:39,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1188940861, now seen corresponding path program 1 times [2024-11-28 04:25:39,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:39,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523523177] [2024-11-28 04:25:39,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:39,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:39,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:39,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523523177] [2024-11-28 04:25:39,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523523177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:39,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:39,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:25:39,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799657315] [2024-11-28 04:25:39,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:39,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:25:39,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:39,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:25:39,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:25:39,766 INFO L87 Difference]: Start difference. First operand 583 states and 868 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:25:39,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:39,895 INFO L93 Difference]: Finished difference Result 843 states and 1229 transitions. [2024-11-28 04:25:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:25:39,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-28 04:25:39,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:39,903 INFO L225 Difference]: With dead ends: 843 [2024-11-28 04:25:39,907 INFO L226 Difference]: Without dead ends: 588 [2024-11-28 04:25:39,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:25:39,910 INFO L435 NwaCegarLoop]: 607 mSDtfsCounter, 0 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:39,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3030 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:25:39,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-28 04:25:39,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2024-11-28 04:25:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 493 states have (on average 1.4989858012170385) internal successors, (739), 502 states have internal predecessors, (739), 61 states have call successors, (61), 29 states have call predecessors, (61), 32 states have return successors, (71), 60 states have call predecessors, (71), 57 states have call successors, (71) [2024-11-28 04:25:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 871 transitions. [2024-11-28 04:25:40,002 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 871 transitions. Word has length 62 [2024-11-28 04:25:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:40,003 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 871 transitions. [2024-11-28 04:25:40,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:25:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 871 transitions. [2024-11-28 04:25:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:25:40,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:40,011 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:40,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:25:40,011 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:40,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:40,016 INFO L85 PathProgramCache]: Analyzing trace with hash 344935359, now seen corresponding path program 1 times [2024-11-28 04:25:40,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:40,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59641587] [2024-11-28 04:25:40,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:40,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:40,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:40,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59641587] [2024-11-28 04:25:40,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59641587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:40,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:40,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:25:40,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117202485] [2024-11-28 04:25:40,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:40,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:25:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:40,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:25:40,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:25:40,201 INFO L87 Difference]: Start difference. First operand 588 states and 871 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:25:40,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:40,297 INFO L93 Difference]: Finished difference Result 863 states and 1247 transitions. [2024-11-28 04:25:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:25:40,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-28 04:25:40,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:40,310 INFO L225 Difference]: With dead ends: 863 [2024-11-28 04:25:40,310 INFO L226 Difference]: Without dead ends: 603 [2024-11-28 04:25:40,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:25:40,313 INFO L435 NwaCegarLoop]: 607 mSDtfsCounter, 0 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:40,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3030 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:25:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-11-28 04:25:40,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2024-11-28 04:25:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 505 states have (on average 1.4871287128712871) internal successors, (751), 514 states have internal predecessors, (751), 61 states have call successors, (61), 29 states have call predecessors, (61), 35 states have return successors, (74), 63 states have call predecessors, (74), 57 states have call successors, (74) [2024-11-28 04:25:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 886 transitions. [2024-11-28 04:25:40,414 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 886 transitions. Word has length 62 [2024-11-28 04:25:40,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:40,415 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 886 transitions. [2024-11-28 04:25:40,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:25:40,415 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 886 transitions. [2024-11-28 04:25:40,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:25:40,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:40,418 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] [2024-11-28 04:25:40,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:25:40,419 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:40,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash 406974973, now seen corresponding path program 1 times [2024-11-28 04:25:40,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:40,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554888465] [2024-11-28 04:25:40,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:40,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:40,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:40,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554888465] [2024-11-28 04:25:40,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554888465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:40,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:40,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:25:40,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698679183] [2024-11-28 04:25:40,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:40,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:25:40,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:40,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:25:40,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:25:40,744 INFO L87 Difference]: Start difference. First operand 603 states and 886 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:25:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:42,329 INFO L93 Difference]: Finished difference Result 962 states and 1355 transitions. [2024-11-28 04:25:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:25:42,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 04:25:42,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:42,338 INFO L225 Difference]: With dead ends: 962 [2024-11-28 04:25:42,338 INFO L226 Difference]: Without dead ends: 689 [2024-11-28 04:25:42,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:25:42,343 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 889 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:42,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 1339 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:25:42,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-28 04:25:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 615. [2024-11-28 04:25:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 515 states have (on average 1.4776699029126215) internal successors, (761), 524 states have internal predecessors, (761), 62 states have call successors, (62), 30 states have call predecessors, (62), 36 states have return successors, (73), 64 states have call predecessors, (73), 58 states have call successors, (73) [2024-11-28 04:25:42,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 896 transitions. [2024-11-28 04:25:42,427 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 896 transitions. Word has length 62 [2024-11-28 04:25:42,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:42,428 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 896 transitions. [2024-11-28 04:25:42,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:25:42,429 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 896 transitions. [2024-11-28 04:25:42,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:25:42,430 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:42,431 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] [2024-11-28 04:25:42,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:25:42,431 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:42,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:42,432 INFO L85 PathProgramCache]: Analyzing trace with hash 829676799, now seen corresponding path program 1 times [2024-11-28 04:25:42,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:42,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630738381] [2024-11-28 04:25:42,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:42,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:42,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:42,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630738381] [2024-11-28 04:25:42,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630738381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:42,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:42,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:25:42,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842183889] [2024-11-28 04:25:42,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:42,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:25:42,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:42,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:25:42,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:25:42,572 INFO L87 Difference]: Start difference. First operand 615 states and 896 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:25:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:43,436 INFO L93 Difference]: Finished difference Result 1184 states and 1651 transitions. [2024-11-28 04:25:43,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:25:43,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 04:25:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:43,446 INFO L225 Difference]: With dead ends: 1184 [2024-11-28 04:25:43,446 INFO L226 Difference]: Without dead ends: 900 [2024-11-28 04:25:43,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:25:43,451 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 851 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:43,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 665 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:25:43,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2024-11-28 04:25:43,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 896. [2024-11-28 04:25:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 730 states have (on average 1.4232876712328768) internal successors, (1039), 746 states have internal predecessors, (1039), 97 states have call successors, (97), 52 states have call predecessors, (97), 67 states have return successors, (130), 104 states have call predecessors, (130), 93 states have call successors, (130) [2024-11-28 04:25:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1266 transitions. [2024-11-28 04:25:43,566 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1266 transitions. Word has length 62 [2024-11-28 04:25:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:43,567 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1266 transitions. [2024-11-28 04:25:43,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:25:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1266 transitions. [2024-11-28 04:25:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:25:43,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:43,575 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] [2024-11-28 04:25:43,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:25:43,575 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:43,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:43,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1142460820, now seen corresponding path program 1 times [2024-11-28 04:25:43,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:43,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585709684] [2024-11-28 04:25:43,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:43,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:43,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:43,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585709684] [2024-11-28 04:25:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585709684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:43,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:43,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:25:43,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940658517] [2024-11-28 04:25:43,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:43,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:25:43,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:43,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:25:43,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:25:43,671 INFO L87 Difference]: Start difference. First operand 896 states and 1266 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:25:43,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:43,837 INFO L93 Difference]: Finished difference Result 1965 states and 2683 transitions. [2024-11-28 04:25:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:25:43,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-11-28 04:25:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:43,850 INFO L225 Difference]: With dead ends: 1965 [2024-11-28 04:25:43,851 INFO L226 Difference]: Without dead ends: 1379 [2024-11-28 04:25:43,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:25:43,854 INFO L435 NwaCegarLoop]: 606 mSDtfsCounter, 102 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:43,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1181 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:25:43,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-11-28 04:25:44,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1356. [2024-11-28 04:25:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1088 states have (on average 1.3777573529411764) internal successors, (1499), 1107 states have internal predecessors, (1499), 142 states have call successors, (142), 96 states have call predecessors, (142), 124 states have return successors, (202), 159 states have call predecessors, (202), 138 states have call successors, (202) [2024-11-28 04:25:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1843 transitions. [2024-11-28 04:25:44,037 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1843 transitions. Word has length 63 [2024-11-28 04:25:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:44,038 INFO L471 AbstractCegarLoop]: Abstraction has 1356 states and 1843 transitions. [2024-11-28 04:25:44,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:25:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1843 transitions. [2024-11-28 04:25:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 04:25:44,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:44,043 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] [2024-11-28 04:25:44,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:25:44,044 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:44,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:44,045 INFO L85 PathProgramCache]: Analyzing trace with hash 226757210, now seen corresponding path program 1 times [2024-11-28 04:25:44,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:44,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509935628] [2024-11-28 04:25:44,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:44,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:44,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509935628] [2024-11-28 04:25:44,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509935628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:44,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:44,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:25:44,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737799050] [2024-11-28 04:25:44,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:44,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:25:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:44,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:25:44,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:25:44,122 INFO L87 Difference]: Start difference. First operand 1356 states and 1843 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:25:44,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:44,359 INFO L93 Difference]: Finished difference Result 3300 states and 4376 transitions. [2024-11-28 04:25:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:25:44,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-11-28 04:25:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:44,379 INFO L225 Difference]: With dead ends: 3300 [2024-11-28 04:25:44,381 INFO L226 Difference]: Without dead ends: 2274 [2024-11-28 04:25:44,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:25:44,389 INFO L435 NwaCegarLoop]: 608 mSDtfsCounter, 581 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:44,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 712 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:25:44,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2024-11-28 04:25:44,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2188. [2024-11-28 04:25:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1724 states have (on average 1.331786542923434) internal successors, (2296), 1753 states have internal predecessors, (2296), 240 states have call successors, (240), 180 states have call predecessors, (240), 222 states have return successors, (338), 261 states have call predecessors, (338), 236 states have call successors, (338) [2024-11-28 04:25:44,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2874 transitions. [2024-11-28 04:25:44,654 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2874 transitions. Word has length 64 [2024-11-28 04:25:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:44,657 INFO L471 AbstractCegarLoop]: Abstraction has 2188 states and 2874 transitions. [2024-11-28 04:25:44,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:25:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2874 transitions. [2024-11-28 04:25:44,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:25:44,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:44,664 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] [2024-11-28 04:25:44,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:25:44,665 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:44,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:44,665 INFO L85 PathProgramCache]: Analyzing trace with hash 256994215, now seen corresponding path program 1 times [2024-11-28 04:25:44,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:44,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39345990] [2024-11-28 04:25:44,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:44,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:44,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:44,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39345990] [2024-11-28 04:25:44,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39345990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:44,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:44,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:25:44,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113242911] [2024-11-28 04:25:44,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:44,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:25:44,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:44,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:25:44,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:25:44,837 INFO L87 Difference]: Start difference. First operand 2188 states and 2874 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 04:25:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:45,452 INFO L93 Difference]: Finished difference Result 2973 states and 3848 transitions. [2024-11-28 04:25:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:25:45,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2024-11-28 04:25:45,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:45,476 INFO L225 Difference]: With dead ends: 2973 [2024-11-28 04:25:45,476 INFO L226 Difference]: Without dead ends: 2970 [2024-11-28 04:25:45,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:25:45,480 INFO L435 NwaCegarLoop]: 613 mSDtfsCounter, 1142 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:45,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 699 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:25:45,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2024-11-28 04:25:45,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2937. [2024-11-28 04:25:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2296 states have (on average 1.3114111498257839) internal successors, (3011), 2335 states have internal predecessors, (3011), 323 states have call successors, (323), 252 states have call predecessors, (323), 316 states have return successors, (463), 356 states have call predecessors, (463), 320 states have call successors, (463) [2024-11-28 04:25:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 3797 transitions. [2024-11-28 04:25:45,838 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 3797 transitions. Word has length 68 [2024-11-28 04:25:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:45,840 INFO L471 AbstractCegarLoop]: Abstraction has 2937 states and 3797 transitions. [2024-11-28 04:25:45,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 04:25:45,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 3797 transitions. [2024-11-28 04:25:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:25:45,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:45,848 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] [2024-11-28 04:25:45,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:25:45,849 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:45,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:45,849 INFO L85 PathProgramCache]: Analyzing trace with hash -624341909, now seen corresponding path program 1 times [2024-11-28 04:25:45,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:45,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037704692] [2024-11-28 04:25:45,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:45,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037704692] [2024-11-28 04:25:46,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037704692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811430649] [2024-11-28 04:25:46,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:46,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:46,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:46,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:25:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:46,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:25:46,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:46,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:25:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811430649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:25:47,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:25:47,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-28 04:25:47,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562724120] [2024-11-28 04:25:47,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:25:47,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:25:47,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:47,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:25:47,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:25:47,024 INFO L87 Difference]: Start difference. First operand 2937 states and 3797 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 04:25:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:48,610 INFO L93 Difference]: Finished difference Result 6720 states and 8580 transitions. [2024-11-28 04:25:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:25:48,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 69 [2024-11-28 04:25:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:48,660 INFO L225 Difference]: With dead ends: 6720 [2024-11-28 04:25:48,661 INFO L226 Difference]: Without dead ends: 6717 [2024-11-28 04:25:48,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:25:48,667 INFO L435 NwaCegarLoop]: 799 mSDtfsCounter, 994 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:48,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 2903 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:25:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2024-11-28 04:25:49,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 4664. [2024-11-28 04:25:49,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4664 states, 3637 states have (on average 1.299972504811658) internal successors, (4728), 3698 states have internal predecessors, (4728), 507 states have call successors, (507), 410 states have call predecessors, (507), 518 states have return successors, (741), 562 states have call predecessors, (741), 504 states have call successors, (741) [2024-11-28 04:25:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 5976 transitions. [2024-11-28 04:25:49,304 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 5976 transitions. Word has length 69 [2024-11-28 04:25:49,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:49,305 INFO L471 AbstractCegarLoop]: Abstraction has 4664 states and 5976 transitions. [2024-11-28 04:25:49,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 04:25:49,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 5976 transitions. [2024-11-28 04:25:49,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 04:25:49,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:49,309 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:49,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:25:49,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:25:49,510 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:49,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:49,511 INFO L85 PathProgramCache]: Analyzing trace with hash -749625591, now seen corresponding path program 2 times [2024-11-28 04:25:49,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:49,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016548400] [2024-11-28 04:25:49,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:25:49,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:49,533 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:25:49,533 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:25:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:25:49,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:49,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016548400] [2024-11-28 04:25:49,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016548400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:49,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:49,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:25:49,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418900257] [2024-11-28 04:25:49,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:49,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:25:49,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:49,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:25:49,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:25:49,572 INFO L87 Difference]: Start difference. First operand 4664 states and 5976 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 04:25:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:49,977 INFO L93 Difference]: Finished difference Result 7038 states and 9012 transitions. [2024-11-28 04:25:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:25:49,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2024-11-28 04:25:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:50,002 INFO L225 Difference]: With dead ends: 7038 [2024-11-28 04:25:50,002 INFO L226 Difference]: Without dead ends: 3113 [2024-11-28 04:25:50,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:25:50,014 INFO L435 NwaCegarLoop]: 697 mSDtfsCounter, 579 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:50,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 810 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:25:50,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2024-11-28 04:25:50,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 3093. [2024-11-28 04:25:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3093 states, 2422 states have (on average 1.2902559867877788) internal successors, (3125), 2461 states have internal predecessors, (3125), 339 states have call successors, (339), 266 states have call predecessors, (339), 330 states have return successors, (467), 372 states have call predecessors, (467), 336 states have call successors, (467) [2024-11-28 04:25:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3093 states to 3093 states and 3931 transitions. [2024-11-28 04:25:50,611 INFO L78 Accepts]: Start accepts. Automaton has 3093 states and 3931 transitions. Word has length 71 [2024-11-28 04:25:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:50,611 INFO L471 AbstractCegarLoop]: Abstraction has 3093 states and 3931 transitions. [2024-11-28 04:25:50,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 04:25:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3093 states and 3931 transitions. [2024-11-28 04:25:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 04:25:50,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:50,617 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:50,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:25:50,618 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:50,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1320095221, now seen corresponding path program 1 times [2024-11-28 04:25:50,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:50,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032720635] [2024-11-28 04:25:50,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:50,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:25:50,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:50,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032720635] [2024-11-28 04:25:50,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032720635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:50,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:50,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:25:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285414562] [2024-11-28 04:25:50,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:50,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:25:50,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:50,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:25:50,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:25:50,809 INFO L87 Difference]: Start difference. First operand 3093 states and 3931 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:25:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:53,318 INFO L93 Difference]: Finished difference Result 8921 states and 11133 transitions. [2024-11-28 04:25:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:25:53,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2024-11-28 04:25:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:53,353 INFO L225 Difference]: With dead ends: 8921 [2024-11-28 04:25:53,353 INFO L226 Difference]: Without dead ends: 4852 [2024-11-28 04:25:53,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:25:53,371 INFO L435 NwaCegarLoop]: 403 mSDtfsCounter, 672 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:53,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1737 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 04:25:53,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4852 states. [2024-11-28 04:25:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4852 to 4600. [2024-11-28 04:25:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4600 states, 3575 states have (on average 1.2567832167832167) internal successors, (4493), 3647 states have internal predecessors, (4493), 501 states have call successors, (501), 407 states have call predecessors, (501), 522 states have return successors, (748), 552 states have call predecessors, (748), 498 states have call successors, (748) [2024-11-28 04:25:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 5742 transitions. [2024-11-28 04:25:54,067 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 5742 transitions. Word has length 80 [2024-11-28 04:25:54,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:54,068 INFO L471 AbstractCegarLoop]: Abstraction has 4600 states and 5742 transitions. [2024-11-28 04:25:54,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:25:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 5742 transitions. [2024-11-28 04:25:54,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:25:54,077 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:54,077 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:54,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:25:54,077 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:54,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:54,082 INFO L85 PathProgramCache]: Analyzing trace with hash -970384085, now seen corresponding path program 1 times [2024-11-28 04:25:54,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:54,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632090291] [2024-11-28 04:25:54,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:54,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:25:54,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:54,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632090291] [2024-11-28 04:25:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632090291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:54,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:25:54,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639533485] [2024-11-28 04:25:54,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:54,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:25:54,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:54,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:25:54,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:25:54,295 INFO L87 Difference]: Start difference. First operand 4600 states and 5742 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:25:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:56,915 INFO L93 Difference]: Finished difference Result 8236 states and 10198 transitions. [2024-11-28 04:25:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:25:56,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2024-11-28 04:25:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:56,953 INFO L225 Difference]: With dead ends: 8236 [2024-11-28 04:25:56,953 INFO L226 Difference]: Without dead ends: 4173 [2024-11-28 04:25:56,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:25:56,969 INFO L435 NwaCegarLoop]: 414 mSDtfsCounter, 1476 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:56,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1798 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 04:25:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2024-11-28 04:25:57,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 3897. [2024-11-28 04:25:57,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 3040 states have (on average 1.2532894736842106) internal successors, (3810), 3097 states have internal predecessors, (3810), 423 states have call successors, (423), 338 states have call predecessors, (423), 432 states have return successors, (575), 468 states have call predecessors, (575), 420 states have call successors, (575) [2024-11-28 04:25:57,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 4808 transitions. [2024-11-28 04:25:57,604 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 4808 transitions. Word has length 86 [2024-11-28 04:25:57,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:57,605 INFO L471 AbstractCegarLoop]: Abstraction has 3897 states and 4808 transitions. [2024-11-28 04:25:57,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:25:57,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 4808 transitions. [2024-11-28 04:25:57,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 04:25:57,663 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:57,664 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:57,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:25:57,665 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:57,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:57,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1143217180, now seen corresponding path program 1 times [2024-11-28 04:25:57,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:57,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988929993] [2024-11-28 04:25:57,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:57,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 04:25:57,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:57,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988929993] [2024-11-28 04:25:57,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988929993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:57,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873540135] [2024-11-28 04:25:57,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:57,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:57,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:57,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:57,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:25:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:58,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:25:58,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:25:58,202 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:25:58,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873540135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:58,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:25:58,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-28 04:25:58,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693060245] [2024-11-28 04:25:58,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:58,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:25:58,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:58,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:25:58,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:25:58,205 INFO L87 Difference]: Start difference. First operand 3897 states and 4808 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:25:58,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:58,424 INFO L93 Difference]: Finished difference Result 5512 states and 6773 transitions. [2024-11-28 04:25:58,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:25:58,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-11-28 04:25:58,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:58,444 INFO L225 Difference]: With dead ends: 5512 [2024-11-28 04:25:58,446 INFO L226 Difference]: Without dead ends: 1949 [2024-11-28 04:25:58,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:25:58,455 INFO L435 NwaCegarLoop]: 604 mSDtfsCounter, 0 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:58,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3011 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:25:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2024-11-28 04:25:58,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1949. [2024-11-28 04:25:58,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1582 states have (on average 1.2850821744627055) internal successors, (2033), 1597 states have internal predecessors, (2033), 182 states have call successors, (182), 135 states have call predecessors, (182), 183 states have return successors, (249), 217 states have call predecessors, (249), 179 states have call successors, (249) [2024-11-28 04:25:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2464 transitions. [2024-11-28 04:25:58,677 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2464 transitions. Word has length 139 [2024-11-28 04:25:58,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:58,678 INFO L471 AbstractCegarLoop]: Abstraction has 1949 states and 2464 transitions. [2024-11-28 04:25:58,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:25:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2464 transitions. [2024-11-28 04:25:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 04:25:58,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:58,685 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:58,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:25:58,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:25:58,886 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:58,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:58,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2107422360, now seen corresponding path program 1 times [2024-11-28 04:25:58,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:58,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683264203] [2024-11-28 04:25:58,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:58,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:25:58,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:58,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683264203] [2024-11-28 04:25:58,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683264203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:58,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:58,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:25:58,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108980199] [2024-11-28 04:25:58,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:58,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:25:58,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:58,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:25:58,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:25:58,955 INFO L87 Difference]: Start difference. First operand 1949 states and 2464 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 04:25:59,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:59,139 INFO L93 Difference]: Finished difference Result 3215 states and 4018 transitions. [2024-11-28 04:25:59,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:25:59,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 141 [2024-11-28 04:25:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:59,154 INFO L225 Difference]: With dead ends: 3215 [2024-11-28 04:25:59,155 INFO L226 Difference]: Without dead ends: 1824 [2024-11-28 04:25:59,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:25:59,161 INFO L435 NwaCegarLoop]: 605 mSDtfsCounter, 119 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:59,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1087 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:25:59,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2024-11-28 04:25:59,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1817. [2024-11-28 04:25:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1482 states have (on average 1.294871794871795) internal successors, (1919), 1495 states have internal predecessors, (1919), 167 states have call successors, (167), 121 states have call predecessors, (167), 166 states have return successors, (231), 201 states have call predecessors, (231), 164 states have call successors, (231) [2024-11-28 04:25:59,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2317 transitions. [2024-11-28 04:25:59,398 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2317 transitions. Word has length 141 [2024-11-28 04:25:59,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:59,399 INFO L471 AbstractCegarLoop]: Abstraction has 1817 states and 2317 transitions. [2024-11-28 04:25:59,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 04:25:59,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2317 transitions. [2024-11-28 04:25:59,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 04:25:59,405 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:59,407 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:59,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:25:59,408 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:59,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:59,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2146142569, now seen corresponding path program 1 times [2024-11-28 04:25:59,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:59,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468810208] [2024-11-28 04:25:59,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:59,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 04:25:59,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:59,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468810208] [2024-11-28 04:25:59,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468810208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:59,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:59,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:25:59,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103430923] [2024-11-28 04:25:59,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:59,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:25:59,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:59,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:25:59,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:25:59,576 INFO L87 Difference]: Start difference. First operand 1817 states and 2317 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:26:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:00,735 INFO L93 Difference]: Finished difference Result 3138 states and 3955 transitions. [2024-11-28 04:26:00,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:26:00,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 150 [2024-11-28 04:26:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:00,750 INFO L225 Difference]: With dead ends: 3138 [2024-11-28 04:26:00,750 INFO L226 Difference]: Without dead ends: 1840 [2024-11-28 04:26:00,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:26:00,755 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 302 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:00,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1274 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:26:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2024-11-28 04:26:00,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1770. [2024-11-28 04:26:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1451 states have (on average 1.2935906271536872) internal successors, (1877), 1466 states have internal predecessors, (1877), 161 states have call successors, (161), 119 states have call predecessors, (161), 156 states have return successors, (219), 185 states have call predecessors, (219), 158 states have call successors, (219) [2024-11-28 04:26:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2257 transitions. [2024-11-28 04:26:00,956 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2257 transitions. Word has length 150 [2024-11-28 04:26:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:00,959 INFO L471 AbstractCegarLoop]: Abstraction has 1770 states and 2257 transitions. [2024-11-28 04:26:00,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:26:00,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2257 transitions. [2024-11-28 04:26:00,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 04:26:00,964 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:00,965 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:00,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:26:00,966 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:00,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:00,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1159352956, now seen corresponding path program 1 times [2024-11-28 04:26:00,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:00,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862841389] [2024-11-28 04:26:00,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:00,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 04:26:01,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862841389] [2024-11-28 04:26:01,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862841389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771617776] [2024-11-28 04:26:01,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:01,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:01,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:01,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:01,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:26:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:01,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:26:01,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:26:01,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:26:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-28 04:26:02,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771617776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:26:02,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:26:02,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-11-28 04:26:02,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346801452] [2024-11-28 04:26:02,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:26:02,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:26:02,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:02,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:26:02,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:26:02,269 INFO L87 Difference]: Start difference. First operand 1770 states and 2257 transitions. Second operand has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-28 04:26:04,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:04,530 INFO L93 Difference]: Finished difference Result 3779 states and 4789 transitions. [2024-11-28 04:26:04,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:26:04,531 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 153 [2024-11-28 04:26:04,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:04,555 INFO L225 Difference]: With dead ends: 3779 [2024-11-28 04:26:04,555 INFO L226 Difference]: Without dead ends: 2416 [2024-11-28 04:26:04,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:26:04,562 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 1741 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:04,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1768 Valid, 1552 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 04:26:04,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2024-11-28 04:26:04,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2223. [2024-11-28 04:26:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 1784 states have (on average 1.2550448430493273) internal successors, (2239), 1807 states have internal predecessors, (2239), 219 states have call successors, (219), 173 states have call predecessors, (219), 218 states have return successors, (337), 243 states have call predecessors, (337), 216 states have call successors, (337) [2024-11-28 04:26:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 2795 transitions. [2024-11-28 04:26:04,892 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 2795 transitions. Word has length 153 [2024-11-28 04:26:04,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:04,893 INFO L471 AbstractCegarLoop]: Abstraction has 2223 states and 2795 transitions. [2024-11-28 04:26:04,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-28 04:26:04,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 2795 transitions. [2024-11-28 04:26:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:04,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:04,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:04,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:26:05,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d162ed18-8303-4c70-aaab-5bbaf6f23414/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:26:05,106 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:05,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:05,106 INFO L85 PathProgramCache]: Analyzing trace with hash -255569113, now seen corresponding path program 1 times [2024-11-28 04:26:05,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:05,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832539689] [2024-11-28 04:26:05,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:05,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:05,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:05,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832539689] [2024-11-28 04:26:05,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832539689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:05,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:05,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:26:05,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847128681] [2024-11-28 04:26:05,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:05,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:26:05,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:05,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:26:05,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:26:05,235 INFO L87 Difference]: Start difference. First operand 2223 states and 2795 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:05,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:05,624 INFO L93 Difference]: Finished difference Result 2518 states and 3257 transitions. [2024-11-28 04:26:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:26:05,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:05,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:05,647 INFO L225 Difference]: With dead ends: 2518 [2024-11-28 04:26:05,647 INFO L226 Difference]: Without dead ends: 2223 [2024-11-28 04:26:05,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:26:05,651 INFO L435 NwaCegarLoop]: 604 mSDtfsCounter, 470 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:05,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 728 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:26:05,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2024-11-28 04:26:05,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2223. [2024-11-28 04:26:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 1784 states have (on average 1.2544843049327354) internal successors, (2238), 1807 states have internal predecessors, (2238), 219 states have call successors, (219), 173 states have call predecessors, (219), 218 states have return successors, (337), 243 states have call predecessors, (337), 216 states have call successors, (337) [2024-11-28 04:26:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 2794 transitions. [2024-11-28 04:26:05,929 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 2794 transitions. Word has length 144 [2024-11-28 04:26:05,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:05,930 INFO L471 AbstractCegarLoop]: Abstraction has 2223 states and 2794 transitions. [2024-11-28 04:26:05,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 2794 transitions. [2024-11-28 04:26:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:05,936 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:05,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:05,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:26:05,937 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:05,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:05,938 INFO L85 PathProgramCache]: Analyzing trace with hash -930729239, now seen corresponding path program 1 times [2024-11-28 04:26:05,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:05,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533426780] [2024-11-28 04:26:05,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:05,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:06,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:06,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533426780] [2024-11-28 04:26:06,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533426780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:06,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:06,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:26:06,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790848488] [2024-11-28 04:26:06,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:06,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:26:06,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:06,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:26:06,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:06,107 INFO L87 Difference]: Start difference. First operand 2223 states and 2794 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:07,379 INFO L93 Difference]: Finished difference Result 2839 states and 3774 transitions. [2024-11-28 04:26:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:26:07,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:07,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:07,401 INFO L225 Difference]: With dead ends: 2839 [2024-11-28 04:26:07,401 INFO L226 Difference]: Without dead ends: 2549 [2024-11-28 04:26:07,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:07,404 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 1068 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:07,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 1478 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:26:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2024-11-28 04:26:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2524. [2024-11-28 04:26:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2060 states have (on average 1.300485436893204) internal successors, (2679), 2084 states have internal predecessors, (2679), 237 states have call successors, (237), 179 states have call predecessors, (237), 225 states have return successors, (356), 261 states have call predecessors, (356), 234 states have call successors, (356) [2024-11-28 04:26:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3272 transitions. [2024-11-28 04:26:07,705 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3272 transitions. Word has length 144 [2024-11-28 04:26:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:07,705 INFO L471 AbstractCegarLoop]: Abstraction has 2524 states and 3272 transitions. [2024-11-28 04:26:07,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:07,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3272 transitions. [2024-11-28 04:26:07,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:07,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:07,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:07,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:26:07,712 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:07,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:07,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1013050651, now seen corresponding path program 1 times [2024-11-28 04:26:07,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:07,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17716333] [2024-11-28 04:26:07,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:07,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:07,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:07,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17716333] [2024-11-28 04:26:07,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17716333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:07,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:07,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:26:07,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199989265] [2024-11-28 04:26:07,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:07,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:26:07,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:07,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:26:07,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:07,907 INFO L87 Difference]: Start difference. First operand 2524 states and 3272 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:09,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:09,525 INFO L93 Difference]: Finished difference Result 3500 states and 4839 transitions. [2024-11-28 04:26:09,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:26:09,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:09,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:09,543 INFO L225 Difference]: With dead ends: 3500 [2024-11-28 04:26:09,544 INFO L226 Difference]: Without dead ends: 2909 [2024-11-28 04:26:09,547 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 04:26:09,551 INFO L435 NwaCegarLoop]: 690 mSDtfsCounter, 1071 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:09,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 2753 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:26:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2024-11-28 04:26:09,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 2804. [2024-11-28 04:26:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 2315 states have (on average 1.3295896328293737) internal successors, (3078), 2340 states have internal predecessors, (3078), 255 states have call successors, (255), 185 states have call predecessors, (255), 232 states have return successors, (377), 280 states have call predecessors, (377), 252 states have call successors, (377) [2024-11-28 04:26:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 3710 transitions. [2024-11-28 04:26:09,963 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 3710 transitions. Word has length 144 [2024-11-28 04:26:09,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:09,964 INFO L471 AbstractCegarLoop]: Abstraction has 2804 states and 3710 transitions. [2024-11-28 04:26:09,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:09,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 3710 transitions. [2024-11-28 04:26:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:09,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:09,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:09,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:26:09,973 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:09,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:09,975 INFO L85 PathProgramCache]: Analyzing trace with hash -151217049, now seen corresponding path program 1 times [2024-11-28 04:26:09,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:09,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165201633] [2024-11-28 04:26:09,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:09,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:10,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:10,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165201633] [2024-11-28 04:26:10,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165201633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:10,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:10,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:26:10,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784906497] [2024-11-28 04:26:10,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:10,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:26:10,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:10,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:26:10,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:10,175 INFO L87 Difference]: Start difference. First operand 2804 states and 3710 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:11,739 INFO L93 Difference]: Finished difference Result 4392 states and 6256 transitions. [2024-11-28 04:26:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:26:11,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:11,760 INFO L225 Difference]: With dead ends: 4392 [2024-11-28 04:26:11,761 INFO L226 Difference]: Without dead ends: 3521 [2024-11-28 04:26:11,765 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 04:26:11,766 INFO L435 NwaCegarLoop]: 463 mSDtfsCounter, 1093 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:11,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 1986 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:26:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2024-11-28 04:26:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3401. [2024-11-28 04:26:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3401 states, 2860 states have (on average 1.3786713286713286) internal successors, (3943), 2889 states have internal predecessors, (3943), 291 states have call successors, (291), 197 states have call predecessors, (291), 248 states have return successors, (425), 318 states have call predecessors, (425), 288 states have call successors, (425) [2024-11-28 04:26:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 4659 transitions. [2024-11-28 04:26:12,213 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 4659 transitions. Word has length 144 [2024-11-28 04:26:12,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:12,214 INFO L471 AbstractCegarLoop]: Abstraction has 3401 states and 4659 transitions. [2024-11-28 04:26:12,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:12,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 4659 transitions. [2024-11-28 04:26:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:12,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:12,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:12,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 04:26:12,222 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:12,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2093341349, now seen corresponding path program 1 times [2024-11-28 04:26:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:12,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660183672] [2024-11-28 04:26:12,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:12,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:12,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:12,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660183672] [2024-11-28 04:26:12,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660183672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:12,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:12,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:26:12,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015327658] [2024-11-28 04:26:12,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:12,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:26:12,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:12,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:26:12,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:12,417 INFO L87 Difference]: Start difference. First operand 3401 states and 4659 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:13,994 INFO L93 Difference]: Finished difference Result 6319 states and 9379 transitions. [2024-11-28 04:26:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:26:13,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:13,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:14,022 INFO L225 Difference]: With dead ends: 6319 [2024-11-28 04:26:14,022 INFO L226 Difference]: Without dead ends: 4851 [2024-11-28 04:26:14,027 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 04:26:14,029 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 1061 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:14,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 2725 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:26:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2024-11-28 04:26:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 4700. [2024-11-28 04:26:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4700 states, 4049 states have (on average 1.4480118547789578) internal successors, (5863), 4092 states have internal predecessors, (5863), 363 states have call successors, (363), 221 states have call predecessors, (363), 286 states have return successors, (545), 394 states have call predecessors, (545), 360 states have call successors, (545) [2024-11-28 04:26:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 6771 transitions. [2024-11-28 04:26:14,537 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 6771 transitions. Word has length 144 [2024-11-28 04:26:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:14,538 INFO L471 AbstractCegarLoop]: Abstraction has 4700 states and 6771 transitions. [2024-11-28 04:26:14,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 6771 transitions. [2024-11-28 04:26:14,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:14,545 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:14,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:14,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 04:26:14,546 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:14,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:14,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1713578841, now seen corresponding path program 1 times [2024-11-28 04:26:14,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:14,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026535830] [2024-11-28 04:26:14,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:14,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:14,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026535830] [2024-11-28 04:26:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026535830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:14,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:14,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:26:14,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565358761] [2024-11-28 04:26:14,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:14,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:26:14,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:14,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:26:14,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:14,716 INFO L87 Difference]: Start difference. First operand 4700 states and 6771 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:16,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:16,532 INFO L93 Difference]: Finished difference Result 10574 states and 16469 transitions. [2024-11-28 04:26:16,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:26:16,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:16,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:16,570 INFO L225 Difference]: With dead ends: 10574 [2024-11-28 04:26:16,570 INFO L226 Difference]: Without dead ends: 7807 [2024-11-28 04:26:16,581 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 04:26:16,582 INFO L435 NwaCegarLoop]: 680 mSDtfsCounter, 1056 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:16,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 2713 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:26:16,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7807 states. [2024-11-28 04:26:17,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7807 to 7595. [2024-11-28 04:26:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7595 states, 6706 states have (on average 1.526841634357292) internal successors, (10239), 6795 states have internal predecessors, (10239), 507 states have call successors, (507), 269 states have call predecessors, (507), 380 states have return successors, (881), 546 states have call predecessors, (881), 504 states have call successors, (881) [2024-11-28 04:26:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7595 states to 7595 states and 11627 transitions. [2024-11-28 04:26:17,393 INFO L78 Accepts]: Start accepts. Automaton has 7595 states and 11627 transitions. Word has length 144 [2024-11-28 04:26:17,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:17,393 INFO L471 AbstractCegarLoop]: Abstraction has 7595 states and 11627 transitions. [2024-11-28 04:26:17,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:17,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7595 states and 11627 transitions. [2024-11-28 04:26:17,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:17,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:17,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:17,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 04:26:17,401 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:17,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:17,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1488753253, now seen corresponding path program 1 times [2024-11-28 04:26:17,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:17,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861172668] [2024-11-28 04:26:17,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:17,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:17,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:17,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861172668] [2024-11-28 04:26:17,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861172668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:17,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:17,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:26:17,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486438297] [2024-11-28 04:26:17,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:17,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:26:17,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:17,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:26:17,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:17,541 INFO L87 Difference]: Start difference. First operand 7595 states and 11627 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:18,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:18,870 INFO L93 Difference]: Finished difference Result 14585 states and 23612 transitions. [2024-11-28 04:26:18,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:26:18,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:18,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:18,909 INFO L225 Difference]: With dead ends: 14585 [2024-11-28 04:26:18,909 INFO L226 Difference]: Without dead ends: 8923 [2024-11-28 04:26:18,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:18,925 INFO L435 NwaCegarLoop]: 414 mSDtfsCounter, 803 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:18,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1091 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:26:18,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8923 states. [2024-11-28 04:26:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8923 to 7595. [2024-11-28 04:26:19,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7595 states, 6706 states have (on average 1.5243065911124367) internal successors, (10222), 6795 states have internal predecessors, (10222), 507 states have call successors, (507), 269 states have call predecessors, (507), 380 states have return successors, (881), 546 states have call predecessors, (881), 504 states have call successors, (881) [2024-11-28 04:26:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7595 states to 7595 states and 11610 transitions. [2024-11-28 04:26:19,839 INFO L78 Accepts]: Start accepts. Automaton has 7595 states and 11610 transitions. Word has length 144 [2024-11-28 04:26:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:19,839 INFO L471 AbstractCegarLoop]: Abstraction has 7595 states and 11610 transitions. [2024-11-28 04:26:19,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7595 states and 11610 transitions. [2024-11-28 04:26:19,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:19,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:19,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:19,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 04:26:19,851 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:19,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash 206580967, now seen corresponding path program 1 times [2024-11-28 04:26:19,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:19,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805001431] [2024-11-28 04:26:19,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:19,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:20,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:20,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805001431] [2024-11-28 04:26:20,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805001431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:20,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:20,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:26:20,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024161615] [2024-11-28 04:26:20,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:20,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:26:20,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:20,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:26:20,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:20,015 INFO L87 Difference]: Start difference. First operand 7595 states and 11610 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:21,879 INFO L93 Difference]: Finished difference Result 14502 states and 23412 transitions. [2024-11-28 04:26:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:26:21,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:21,938 INFO L225 Difference]: With dead ends: 14502 [2024-11-28 04:26:21,938 INFO L226 Difference]: Without dead ends: 8840 [2024-11-28 04:26:21,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:21,963 INFO L435 NwaCegarLoop]: 411 mSDtfsCounter, 800 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:21,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1083 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:26:21,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8840 states. [2024-11-28 04:26:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8840 to 7595. [2024-11-28 04:26:22,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7595 states, 6706 states have (on average 1.5217715478675813) internal successors, (10205), 6795 states have internal predecessors, (10205), 507 states have call successors, (507), 269 states have call predecessors, (507), 380 states have return successors, (881), 546 states have call predecessors, (881), 504 states have call successors, (881) [2024-11-28 04:26:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7595 states to 7595 states and 11593 transitions. [2024-11-28 04:26:22,810 INFO L78 Accepts]: Start accepts. Automaton has 7595 states and 11593 transitions. Word has length 144 [2024-11-28 04:26:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:22,810 INFO L471 AbstractCegarLoop]: Abstraction has 7595 states and 11593 transitions. [2024-11-28 04:26:22,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 7595 states and 11593 transitions. [2024-11-28 04:26:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:22,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:22,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:22,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 04:26:22,819 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:22,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1635894747, now seen corresponding path program 1 times [2024-11-28 04:26:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:22,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137826127] [2024-11-28 04:26:22,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:22,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:23,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:23,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137826127] [2024-11-28 04:26:23,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137826127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:23,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:23,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:26:23,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763187345] [2024-11-28 04:26:23,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:23,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:26:23,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:23,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:26:23,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:23,047 INFO L87 Difference]: Start difference. First operand 7595 states and 11593 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:25,196 INFO L93 Difference]: Finished difference Result 19913 states and 32457 transitions. [2024-11-28 04:26:25,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:26:25,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:25,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:25,279 INFO L225 Difference]: With dead ends: 19913 [2024-11-28 04:26:25,280 INFO L226 Difference]: Without dead ends: 14251 [2024-11-28 04:26:25,302 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 04:26:25,302 INFO L435 NwaCegarLoop]: 663 mSDtfsCounter, 1032 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:25,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 2649 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:26:25,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14251 states. [2024-11-28 04:26:26,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14251 to 13979. [2024-11-28 04:26:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13979 states, 12560 states have (on average 1.5878184713375796) internal successors, (19943), 12795 states have internal predecessors, (19943), 795 states have call successors, (795), 365 states have call predecessors, (795), 622 states have return successors, (1937), 850 states have call predecessors, (1937), 792 states have call successors, (1937) [2024-11-28 04:26:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13979 states to 13979 states and 22675 transitions. [2024-11-28 04:26:26,724 INFO L78 Accepts]: Start accepts. Automaton has 13979 states and 22675 transitions. Word has length 144 [2024-11-28 04:26:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:26,724 INFO L471 AbstractCegarLoop]: Abstraction has 13979 states and 22675 transitions. [2024-11-28 04:26:26,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:26,724 INFO L276 IsEmpty]: Start isEmpty. Operand 13979 states and 22675 transitions. [2024-11-28 04:26:26,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:26,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:26,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:26,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 04:26:26,735 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:26,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:26,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1968537885, now seen corresponding path program 1 times [2024-11-28 04:26:26,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:26,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820484103] [2024-11-28 04:26:26,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:26,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:26,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:26,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820484103] [2024-11-28 04:26:26,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820484103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:26,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:26,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:26:26,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427830698] [2024-11-28 04:26:26,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:26,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:26:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:26,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:26:26,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:26,878 INFO L87 Difference]: Start difference. First operand 13979 states and 22675 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:28,456 INFO L93 Difference]: Finished difference Result 28965 states and 49246 transitions. [2024-11-28 04:26:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:26:28,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:28,553 INFO L225 Difference]: With dead ends: 28965 [2024-11-28 04:26:28,553 INFO L226 Difference]: Without dead ends: 16919 [2024-11-28 04:26:28,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:28,592 INFO L435 NwaCegarLoop]: 404 mSDtfsCounter, 795 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:28,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1063 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:26:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16919 states. [2024-11-28 04:26:30,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16919 to 13979. [2024-11-28 04:26:30,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13979 states, 12560 states have (on average 1.5851910828025477) internal successors, (19910), 12795 states have internal predecessors, (19910), 795 states have call successors, (795), 365 states have call predecessors, (795), 622 states have return successors, (1937), 850 states have call predecessors, (1937), 792 states have call successors, (1937) [2024-11-28 04:26:30,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13979 states to 13979 states and 22642 transitions. [2024-11-28 04:26:30,457 INFO L78 Accepts]: Start accepts. Automaton has 13979 states and 22642 transitions. Word has length 144 [2024-11-28 04:26:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:30,458 INFO L471 AbstractCegarLoop]: Abstraction has 13979 states and 22642 transitions. [2024-11-28 04:26:30,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 13979 states and 22642 transitions. [2024-11-28 04:26:30,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:30,467 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:30,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:30,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 04:26:30,468 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:30,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:30,469 INFO L85 PathProgramCache]: Analyzing trace with hash -39605659, now seen corresponding path program 1 times [2024-11-28 04:26:30,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:30,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494514213] [2024-11-28 04:26:30,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:30,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:30,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:30,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494514213] [2024-11-28 04:26:30,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494514213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:30,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:30,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:26:30,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780251016] [2024-11-28 04:26:30,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:30,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:26:30,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:30,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:26:30,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:30,632 INFO L87 Difference]: Start difference. First operand 13979 states and 22642 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:34,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:34,436 INFO L93 Difference]: Finished difference Result 42999 states and 73483 transitions. [2024-11-28 04:26:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:26:34,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:34,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:34,625 INFO L225 Difference]: With dead ends: 42999 [2024-11-28 04:26:34,625 INFO L226 Difference]: Without dead ends: 30953 [2024-11-28 04:26:34,667 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 04:26:34,668 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 1147 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:34,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1902 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:26:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30953 states. [2024-11-28 04:26:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30953 to 28271. [2024-11-28 04:26:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28271 states, 25662 states have (on average 1.6377523186033824) internal successors, (42028), 26351 states have internal predecessors, (42028), 1339 states have call successors, (1339), 557 states have call predecessors, (1339), 1268 states have return successors, (5553), 1426 states have call predecessors, (5553), 1336 states have call successors, (5553) [2024-11-28 04:26:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28271 states to 28271 states and 48920 transitions. [2024-11-28 04:26:37,054 INFO L78 Accepts]: Start accepts. Automaton has 28271 states and 48920 transitions. Word has length 144 [2024-11-28 04:26:37,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:37,055 INFO L471 AbstractCegarLoop]: Abstraction has 28271 states and 48920 transitions. [2024-11-28 04:26:37,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:37,055 INFO L276 IsEmpty]: Start isEmpty. Operand 28271 states and 48920 transitions. [2024-11-28 04:26:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:37,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:37,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:37,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 04:26:37,066 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:37,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1962280611, now seen corresponding path program 1 times [2024-11-28 04:26:37,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:37,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458120071] [2024-11-28 04:26:37,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:37,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:37,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:37,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458120071] [2024-11-28 04:26:37,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458120071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:37,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:37,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:26:37,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380615276] [2024-11-28 04:26:37,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:37,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:26:37,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:37,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:26:37,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:37,388 INFO L87 Difference]: Start difference. First operand 28271 states and 48920 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:43,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:43,125 INFO L93 Difference]: Finished difference Result 92441 states and 169367 transitions. [2024-11-28 04:26:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:26:43,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:26:43,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:43,534 INFO L225 Difference]: With dead ends: 92441 [2024-11-28 04:26:43,534 INFO L226 Difference]: Without dead ends: 66103 [2024-11-28 04:26:43,647 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 04:26:43,648 INFO L435 NwaCegarLoop]: 649 mSDtfsCounter, 1267 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:43,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 2589 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:26:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66103 states. [2024-11-28 04:26:50,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66103 to 60800. [2024-11-28 04:26:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60800 states, 55357 states have (on average 1.677403038459454) internal successors, (92856), 57440 states have internal predecessors, (92856), 2395 states have call successors, (2395), 941 states have call predecessors, (2395), 3046 states have return successors, (18897), 2546 states have call predecessors, (18897), 2392 states have call successors, (18897) [2024-11-28 04:26:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60800 states to 60800 states and 114148 transitions. [2024-11-28 04:26:50,817 INFO L78 Accepts]: Start accepts. Automaton has 60800 states and 114148 transitions. Word has length 144 [2024-11-28 04:26:50,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:50,817 INFO L471 AbstractCegarLoop]: Abstraction has 60800 states and 114148 transitions. [2024-11-28 04:26:50,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:50,818 INFO L276 IsEmpty]: Start isEmpty. Operand 60800 states and 114148 transitions. [2024-11-28 04:26:50,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 04:26:50,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:50,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:50,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 04:26:50,844 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:50,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:50,845 INFO L85 PathProgramCache]: Analyzing trace with hash -605541723, now seen corresponding path program 1 times [2024-11-28 04:26:50,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:50,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793699927] [2024-11-28 04:26:50,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:50,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:51,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793699927] [2024-11-28 04:26:51,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793699927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:51,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:51,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:26:51,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657432073] [2024-11-28 04:26:51,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:51,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:26:51,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:51,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:26:51,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:51,026 INFO L87 Difference]: Start difference. First operand 60800 states and 114148 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:27:02,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:27:02,975 INFO L93 Difference]: Finished difference Result 206002 states and 415697 transitions. [2024-11-28 04:27:02,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:27:02,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2024-11-28 04:27:02,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:27:03,943 INFO L225 Difference]: With dead ends: 206002 [2024-11-28 04:27:03,943 INFO L226 Difference]: Without dead ends: 147135