./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd --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 7ec37a095871269c822e7d35e6d840f2de134a68f657807281a5c0e96980df26 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:30:17,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:30:18,045 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:30:18,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:30:18,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:30:18,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:30:18,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:30:18,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:30:18,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:30:18,100 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:30:18,101 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:30:18,101 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:30:18,101 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:30:18,101 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:30:18,101 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:30:18,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:30:18,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:30:18,102 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:30:18,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:30:18,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:30:18,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:30:18,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:30:18,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:30:18,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:30:18,103 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:30:18,103 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:30:18,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:30:18,103 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:30:18,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:30:18,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:30:18,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:30:18,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:30:18,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:30:18,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:30:18,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:30:18,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:30:18,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:30:18,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:30:18,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:30:18,106 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:30:18,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:30:18,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:30:18,107 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_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd 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 -> 7ec37a095871269c822e7d35e6d840f2de134a68f657807281a5c0e96980df26 [2024-11-13 14:30:18,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:30:18,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:30:18,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:30:18,461 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:30:18,461 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:30:18,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c Unable to find full path for "g++" [2024-11-13 14:30:20,436 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:30:21,325 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:30:21,326 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c [2024-11-13 14:30:21,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/data/771604913/775f3de11c62405c911e353909978ac2/FLAG0c6784579 [2024-11-13 14:30:21,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/data/771604913/775f3de11c62405c911e353909978ac2 [2024-11-13 14:30:21,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:30:21,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:30:21,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:30:21,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:30:21,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:30:21,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:30:21" (1/1) ... [2024-11-13 14:30:21,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2824bccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:21, skipping insertion in model container [2024-11-13 14:30:21,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:30:21" (1/1) ... [2024-11-13 14:30:21,827 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:30:24,071 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_116a559d-6a46-4d2a-9fca-760a4dc2b154/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[380323,380336] [2024-11-13 14:30:24,117 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_116a559d-6a46-4d2a-9fca-760a4dc2b154/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[383339,383352] [2024-11-13 14:30:24,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:30:24,347 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:30:25,583 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_116a559d-6a46-4d2a-9fca-760a4dc2b154/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[380323,380336] [2024-11-13 14:30:25,589 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_116a559d-6a46-4d2a-9fca-760a4dc2b154/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[383339,383352] [2024-11-13 14:30:25,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:30:25,726 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:30:25,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25 WrapperNode [2024-11-13 14:30:25,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:30:25,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:30:25,728 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:30:25,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:30:25,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:25,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:26,195 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12692 [2024-11-13 14:30:26,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:30:26,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:30:26,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:30:26,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:30:26,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:26,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:26,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:26,538 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]. [2024-11-13 14:30:26,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:26,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:26,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:26,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:26,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:27,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:27,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:30:27,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:30:27,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:30:27,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:30:27,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (1/1) ... [2024-11-13 14:30:27,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:30:27,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:27,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:30:27,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:30:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:30:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-13 14:30:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-13 14:30:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-13 14:30:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-13 14:30:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-13 14:30:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-13 14:30:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-13 14:30:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-13 14:30:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-13 14:30:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-13 14:30:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-13 14:30:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-13 14:30:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-13 14:30:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-13 14:30:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:30:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:30:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:30:27,370 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:30:27,373 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:30:41,361 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2024-11-13 14:30:41,362 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:30:41,427 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:30:41,431 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-13 14:30:41,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:30:41 BoogieIcfgContainer [2024-11-13 14:30:41,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:30:41,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:30:41,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:30:41,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:30:41,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:30:21" (1/3) ... [2024-11-13 14:30:41,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb854a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:30:41, skipping insertion in model container [2024-11-13 14:30:41,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:25" (2/3) ... [2024-11-13 14:30:41,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb854a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:30:41, skipping insertion in model container [2024-11-13 14:30:41,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:30:41" (3/3) ... [2024-11-13 14:30:41,445 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.03.cil-1.c [2024-11-13 14:30:41,460 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:30:41,463 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label45+token_ring.03.cil-1.c that has 8 procedures, 2352 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2024-11-13 14:30:41,599 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:30:41,618 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;@17b66e13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:30:41,618 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 14:30:41,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 2352 states, 2323 states have (on average 1.8544984933275936) internal successors, (4308), 2328 states have internal predecessors, (4308), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:30:41,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:30:41,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:41,651 INFO L215 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] [2024-11-13 14:30:41,651 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:41,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:41,657 INFO L85 PathProgramCache]: Analyzing trace with hash 764793110, now seen corresponding path program 1 times [2024-11-13 14:30:41,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:41,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79628268] [2024-11-13 14:30:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:41,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:41,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:30:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:42,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:30:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:42,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:30:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:42,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:30:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:42,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:30:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:42,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79628268] [2024-11-13 14:30:42,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79628268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:30:42,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:30:42,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:30:42,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110628181] [2024-11-13 14:30:42,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:30:42,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:30:42,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:42,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:30:42,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:30:42,188 INFO L87 Difference]: Start difference. First operand has 2352 states, 2323 states have (on average 1.8544984933275936) internal successors, (4308), 2328 states have internal predecessors, (4308), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:43,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:43,352 INFO L93 Difference]: Finished difference Result 4739 states and 8753 transitions. [2024-11-13 14:30:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:30:43,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (6), 4 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 80 [2024-11-13 14:30:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:43,385 INFO L225 Difference]: With dead ends: 4739 [2024-11-13 14:30:43,385 INFO L226 Difference]: Without dead ends: 2327 [2024-11-13 14:30:43,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:30:43,397 INFO L432 NwaCegarLoop]: 4187 mSDtfsCounter, 380 mSDsluCounter, 12257 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 16444 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:43,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 16444 Invalid, 386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:30:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2024-11-13 14:30:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 2284. [2024-11-13 14:30:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 2257 states have (on average 1.8444838280903855) internal successors, (4163), 2260 states have internal predecessors, (4163), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-13 14:30:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 4199 transitions. [2024-11-13 14:30:43,602 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 4199 transitions. Word has length 80 [2024-11-13 14:30:43,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:43,602 INFO L471 AbstractCegarLoop]: Abstraction has 2284 states and 4199 transitions. [2024-11-13 14:30:43,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:43,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 4199 transitions. [2024-11-13 14:30:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:30:43,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:43,614 INFO L215 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] [2024-11-13 14:30:43,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:30:43,615 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:43,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1143664680, now seen corresponding path program 1 times [2024-11-13 14:30:43,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:43,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296146352] [2024-11-13 14:30:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:43,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:43,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:30:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:43,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:30:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:43,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:30:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:44,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:30:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:44,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:30:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296146352] [2024-11-13 14:30:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296146352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:30:44,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:30:44,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:30:44,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316217209] [2024-11-13 14:30:44,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:30:44,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:30:44,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:44,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:30:44,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:30:44,034 INFO L87 Difference]: Start difference. First operand 2284 states and 4199 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:45,660 INFO L93 Difference]: Finished difference Result 2674 states and 4798 transitions. [2024-11-13 14:30:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:30:45,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 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 80 [2024-11-13 14:30:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:45,683 INFO L225 Difference]: With dead ends: 2674 [2024-11-13 14:30:45,683 INFO L226 Difference]: Without dead ends: 2522 [2024-11-13 14:30:45,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:30:45,689 INFO L432 NwaCegarLoop]: 4106 mSDtfsCounter, 4503 mSDsluCounter, 12305 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4513 SdHoareTripleChecker+Valid, 16411 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:45,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4513 Valid, 16411 Invalid, 838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:30:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2024-11-13 14:30:45,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2435. [2024-11-13 14:30:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2435 states, 2389 states have (on average 1.8267057346169946) internal successors, (4364), 2393 states have internal predecessors, (4364), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2024-11-13 14:30:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4427 transitions. [2024-11-13 14:30:45,827 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4427 transitions. Word has length 80 [2024-11-13 14:30:45,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:45,828 INFO L471 AbstractCegarLoop]: Abstraction has 2435 states and 4427 transitions. [2024-11-13 14:30:45,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:45,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4427 transitions. [2024-11-13 14:30:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:30:45,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:45,832 INFO L215 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] [2024-11-13 14:30:45,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:30:45,836 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:45,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:45,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1909862100, now seen corresponding path program 1 times [2024-11-13 14:30:45,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:45,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183211972] [2024-11-13 14:30:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:45,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:46,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:30:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:46,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:30:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:46,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:30:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:46,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:30:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:46,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:30:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:46,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:46,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183211972] [2024-11-13 14:30:46,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183211972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:30:46,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:30:46,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:30:46,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899512930] [2024-11-13 14:30:46,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:30:46,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:30:46,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:30:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:30:46,233 INFO L87 Difference]: Start difference. First operand 2435 states and 4427 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:48,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:48,466 INFO L93 Difference]: Finished difference Result 3020 states and 5319 transitions. [2024-11-13 14:30:48,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:30:48,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 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 80 [2024-11-13 14:30:48,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:48,482 INFO L225 Difference]: With dead ends: 3020 [2024-11-13 14:30:48,483 INFO L226 Difference]: Without dead ends: 2717 [2024-11-13 14:30:48,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:30:48,490 INFO L432 NwaCegarLoop]: 4215 mSDtfsCounter, 4498 mSDsluCounter, 16671 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4508 SdHoareTripleChecker+Valid, 20886 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:48,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4508 Valid, 20886 Invalid, 1285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 14:30:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2024-11-13 14:30:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2577. [2024-11-13 14:30:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2512 states have (on average 1.810111464968153) internal successors, (4547), 2517 states have internal predecessors, (4547), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2024-11-13 14:30:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4636 transitions. [2024-11-13 14:30:48,604 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4636 transitions. Word has length 80 [2024-11-13 14:30:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:48,604 INFO L471 AbstractCegarLoop]: Abstraction has 2577 states and 4636 transitions. [2024-11-13 14:30:48,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4636 transitions. [2024-11-13 14:30:48,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:30:48,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:48,606 INFO L215 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] [2024-11-13 14:30:48,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:30:48,606 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:48,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:48,607 INFO L85 PathProgramCache]: Analyzing trace with hash 223682262, now seen corresponding path program 1 times [2024-11-13 14:30:48,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:48,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736599122] [2024-11-13 14:30:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:48,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:48,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:30:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:48,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:30:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:48,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:30:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:48,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:30:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:48,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:30:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:48,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:48,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736599122] [2024-11-13 14:30:48,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736599122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:30:48,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:30:48,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:30:48,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700544570] [2024-11-13 14:30:48,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:30:48,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:30:48,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:48,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:30:48,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:30:48,840 INFO L87 Difference]: Start difference. First operand 2577 states and 4636 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:50,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:50,580 INFO L93 Difference]: Finished difference Result 3529 states and 6084 transitions. [2024-11-13 14:30:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:30:50,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 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 80 [2024-11-13 14:30:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:50,598 INFO L225 Difference]: With dead ends: 3529 [2024-11-13 14:30:50,598 INFO L226 Difference]: Without dead ends: 3084 [2024-11-13 14:30:50,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:30:50,602 INFO L432 NwaCegarLoop]: 4213 mSDtfsCounter, 4496 mSDsluCounter, 16671 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4506 SdHoareTripleChecker+Valid, 20884 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:50,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4506 Valid, 20884 Invalid, 1283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:30:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2024-11-13 14:30:50,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2862. [2024-11-13 14:30:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2759 states have (on average 1.7810801014860456) internal successors, (4914), 2766 states have internal predecessors, (4914), 67 states have call successors, (67), 31 states have call predecessors, (67), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2024-11-13 14:30:50,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5059 transitions. [2024-11-13 14:30:50,759 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5059 transitions. Word has length 80 [2024-11-13 14:30:50,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:50,759 INFO L471 AbstractCegarLoop]: Abstraction has 2862 states and 5059 transitions. [2024-11-13 14:30:50,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5059 transitions. [2024-11-13 14:30:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:30:50,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:50,763 INFO L215 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] [2024-11-13 14:30:50,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:30:50,764 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:50,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:50,765 INFO L85 PathProgramCache]: Analyzing trace with hash 169289364, now seen corresponding path program 1 times [2024-11-13 14:30:50,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:50,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381982002] [2024-11-13 14:30:50,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:50,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:50,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:30:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:50,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:30:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:51,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:30:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:51,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:30:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:51,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:30:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:51,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:51,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381982002] [2024-11-13 14:30:51,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381982002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:30:51,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:30:51,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:30:51,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712892676] [2024-11-13 14:30:51,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:30:51,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:30:51,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:51,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:30:51,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:30:51,048 INFO L87 Difference]: Start difference. First operand 2862 states and 5059 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:53,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:53,061 INFO L93 Difference]: Finished difference Result 4514 states and 7563 transitions. [2024-11-13 14:30:53,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:30:53,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 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 80 [2024-11-13 14:30:53,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:53,081 INFO L225 Difference]: With dead ends: 4514 [2024-11-13 14:30:53,081 INFO L226 Difference]: Without dead ends: 3784 [2024-11-13 14:30:53,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:30:53,085 INFO L432 NwaCegarLoop]: 4213 mSDtfsCounter, 4492 mSDsluCounter, 16671 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 20884 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:53,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 20884 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 14:30:53,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2024-11-13 14:30:53,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 3433. [2024-11-13 14:30:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3433 states, 3254 states have (on average 1.7357098955132144) internal successors, (5648), 3265 states have internal predecessors, (5648), 115 states have call successors, (115), 55 states have call predecessors, (115), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2024-11-13 14:30:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5911 transitions. [2024-11-13 14:30:53,249 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5911 transitions. Word has length 80 [2024-11-13 14:30:53,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:53,249 INFO L471 AbstractCegarLoop]: Abstraction has 3433 states and 5911 transitions. [2024-11-13 14:30:53,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5911 transitions. [2024-11-13 14:30:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:30:53,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:53,252 INFO L215 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] [2024-11-13 14:30:53,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:30:53,252 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:53,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:53,253 INFO L85 PathProgramCache]: Analyzing trace with hash -248107242, now seen corresponding path program 1 times [2024-11-13 14:30:53,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:53,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125617952] [2024-11-13 14:30:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:53,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:53,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:30:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:53,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:30:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:53,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:30:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:53,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:30:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:53,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:30:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:53,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:53,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125617952] [2024-11-13 14:30:53,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125617952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:30:53,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:30:53,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:30:53,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893355263] [2024-11-13 14:30:53,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:30:53,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:30:53,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:53,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:30:53,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:30:53,489 INFO L87 Difference]: Start difference. First operand 3433 states and 5911 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:55,430 INFO L93 Difference]: Finished difference Result 6891 states and 11131 transitions. [2024-11-13 14:30:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:30:55,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 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 80 [2024-11-13 14:30:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:55,459 INFO L225 Difference]: With dead ends: 6891 [2024-11-13 14:30:55,459 INFO L226 Difference]: Without dead ends: 5590 [2024-11-13 14:30:55,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:30:55,467 INFO L432 NwaCegarLoop]: 4211 mSDtfsCounter, 4623 mSDsluCounter, 16663 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 20874 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:55,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 20874 Invalid, 1261 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:30:55,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2024-11-13 14:30:55,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 4556. [2024-11-13 14:30:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4556 states, 4233 states have (on average 1.678714859437751) internal successors, (7106), 4252 states have internal predecessors, (7106), 203 states have call successors, (203), 103 states have call predecessors, (203), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2024-11-13 14:30:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 7607 transitions. [2024-11-13 14:30:55,759 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 7607 transitions. Word has length 80 [2024-11-13 14:30:55,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:55,760 INFO L471 AbstractCegarLoop]: Abstraction has 4556 states and 7607 transitions. [2024-11-13 14:30:55,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 7607 transitions. [2024-11-13 14:30:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:30:55,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:55,769 INFO L215 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] [2024-11-13 14:30:55,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:30:55,769 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:55,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:55,770 INFO L85 PathProgramCache]: Analyzing trace with hash 431165012, now seen corresponding path program 1 times [2024-11-13 14:30:55,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:55,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940261776] [2024-11-13 14:30:55,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:55,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:55,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:30:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:55,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:30:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:55,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:30:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:56,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:30:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:56,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:30:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:56,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:56,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940261776] [2024-11-13 14:30:56,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940261776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:30:56,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:30:56,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:30:56,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581358277] [2024-11-13 14:30:56,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:30:56,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:30:56,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:56,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:30:56,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:30:56,031 INFO L87 Difference]: Start difference. First operand 4556 states and 7607 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:58,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:58,148 INFO L93 Difference]: Finished difference Result 10972 states and 17329 transitions. [2024-11-13 14:30:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:30:58,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 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 80 [2024-11-13 14:30:58,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:58,195 INFO L225 Difference]: With dead ends: 10972 [2024-11-13 14:30:58,195 INFO L226 Difference]: Without dead ends: 8548 [2024-11-13 14:30:58,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:30:58,206 INFO L432 NwaCegarLoop]: 4210 mSDtfsCounter, 4512 mSDsluCounter, 16660 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4521 SdHoareTripleChecker+Valid, 20870 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:58,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4521 Valid, 20870 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:30:58,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8548 states. [2024-11-13 14:30:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8548 to 6631. [2024-11-13 14:30:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6631 states, 6028 states have (on average 1.615129396151294) internal successors, (9736), 6063 states have internal predecessors, (9736), 371 states have call successors, (371), 199 states have call predecessors, (371), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2024-11-13 14:30:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 10751 transitions. [2024-11-13 14:30:58,676 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 10751 transitions. Word has length 80 [2024-11-13 14:30:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:58,677 INFO L471 AbstractCegarLoop]: Abstraction has 6631 states and 10751 transitions. [2024-11-13 14:30:58,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:30:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 10751 transitions. [2024-11-13 14:30:58,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:30:58,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:58,686 INFO L215 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] [2024-11-13 14:30:58,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:30:58,687 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:58,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1902227626, now seen corresponding path program 1 times [2024-11-13 14:30:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:58,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643816174] [2024-11-13 14:30:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:58,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:58,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:30:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:58,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:30:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:58,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:30:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:58,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:30:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:58,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:30:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:58,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:58,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643816174] [2024-11-13 14:30:58,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643816174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:30:58,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:30:58,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:30:58,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161742311] [2024-11-13 14:30:58,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:30:58,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:30:58,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:58,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:30:58,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:30:58,874 INFO L87 Difference]: Start difference. First operand 6631 states and 10751 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:31:01,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:01,402 INFO L93 Difference]: Finished difference Result 17878 states and 27887 transitions. [2024-11-13 14:31:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:31:01,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 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 80 [2024-11-13 14:31:01,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:01,477 INFO L225 Difference]: With dead ends: 17878 [2024-11-13 14:31:01,477 INFO L226 Difference]: Without dead ends: 13379 [2024-11-13 14:31:01,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:31:01,497 INFO L432 NwaCegarLoop]: 4211 mSDtfsCounter, 4501 mSDsluCounter, 16663 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4515 SdHoareTripleChecker+Valid, 20874 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:01,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4515 Valid, 20874 Invalid, 1218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:31:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13379 states. [2024-11-13 14:31:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13379 to 10955. [2024-11-13 14:31:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10955 states, 9808 states have (on average 1.566068515497553) internal successors, (15360), 9875 states have internal predecessors, (15360), 691 states have call successors, (691), 391 states have call predecessors, (691), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2024-11-13 14:31:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10955 states to 10955 states and 17533 transitions. [2024-11-13 14:31:02,372 INFO L78 Accepts]: Start accepts. Automaton has 10955 states and 17533 transitions. Word has length 80 [2024-11-13 14:31:02,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:02,373 INFO L471 AbstractCegarLoop]: Abstraction has 10955 states and 17533 transitions. [2024-11-13 14:31:02,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:31:02,375 INFO L276 IsEmpty]: Start isEmpty. Operand 10955 states and 17533 transitions. [2024-11-13 14:31:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:31:02,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:02,389 INFO L215 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] [2024-11-13 14:31:02,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:31:02,390 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:31:02,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:02,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1341527848, now seen corresponding path program 1 times [2024-11-13 14:31:02,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:02,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546788387] [2024-11-13 14:31:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:02,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:02,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:31:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:02,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:31:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:02,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:31:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:02,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:31:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:02,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:31:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:02,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:02,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546788387] [2024-11-13 14:31:02,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546788387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:02,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:31:02,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:31:02,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576685060] [2024-11-13 14:31:02,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:02,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:31:02,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:02,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:31:02,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:31:02,557 INFO L87 Difference]: Start difference. First operand 10955 states and 17533 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:31:04,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:04,692 INFO L93 Difference]: Finished difference Result 26965 states and 42013 transitions. [2024-11-13 14:31:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:31:04,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 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 80 [2024-11-13 14:31:04,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:04,786 INFO L225 Difference]: With dead ends: 26965 [2024-11-13 14:31:04,787 INFO L226 Difference]: Without dead ends: 18143 [2024-11-13 14:31:04,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:31:04,823 INFO L432 NwaCegarLoop]: 4232 mSDtfsCounter, 4669 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4696 SdHoareTripleChecker+Valid, 16609 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:04,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4696 Valid, 16609 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:31:04,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2024-11-13 14:31:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 15280. [2024-11-13 14:31:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15280 states, 13538 states have (on average 1.5284384694932782) internal successors, (20692), 13670 states have internal predecessors, (20692), 1056 states have call successors, (1056), 589 states have call predecessors, (1056), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2024-11-13 14:31:06,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15280 states to 15280 states and 23839 transitions. [2024-11-13 14:31:06,184 INFO L78 Accepts]: Start accepts. Automaton has 15280 states and 23839 transitions. Word has length 80 [2024-11-13 14:31:06,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:06,184 INFO L471 AbstractCegarLoop]: Abstraction has 15280 states and 23839 transitions. [2024-11-13 14:31:06,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:31:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 15280 states and 23839 transitions. [2024-11-13 14:31:06,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-13 14:31:06,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:06,230 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:06,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:31:06,232 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:31:06,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:06,233 INFO L85 PathProgramCache]: Analyzing trace with hash -792531615, now seen corresponding path program 1 times [2024-11-13 14:31:06,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:06,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358742865] [2024-11-13 14:31:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:06,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:06,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:31:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:06,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:31:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:06,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:31:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:06,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:31:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:06,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:31:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:06,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-13 14:31:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:06,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-13 14:31:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:06,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-13 14:31:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:31:06,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:06,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358742865] [2024-11-13 14:31:06,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358742865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:06,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584456768] [2024-11-13 14:31:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:06,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:06,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:06,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:06,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:31:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:06,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:31:06,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 14:31:06,787 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:31:06,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584456768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:06,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:31:06,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-13 14:31:06,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628826281] [2024-11-13 14:31:06,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:06,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:31:06,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:06,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:31:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:31:06,790 INFO L87 Difference]: Start difference. First operand 15280 states and 23839 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:31:08,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:08,142 INFO L93 Difference]: Finished difference Result 41227 states and 63419 transitions. [2024-11-13 14:31:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:31:08,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2024-11-13 14:31:08,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:08,288 INFO L225 Difference]: With dead ends: 41227 [2024-11-13 14:31:08,288 INFO L226 Difference]: Without dead ends: 28080 [2024-11-13 14:31:08,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:31:08,338 INFO L432 NwaCegarLoop]: 4195 mSDtfsCounter, 4151 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4151 SdHoareTripleChecker+Valid, 4409 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:08,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4151 Valid, 4409 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:31:08,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28080 states. [2024-11-13 14:31:10,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28080 to 27880. [2024-11-13 14:31:10,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27880 states, 24454 states have (on average 1.497791772307189) internal successors, (36627), 24715 states have internal predecessors, (36627), 2056 states have call successors, (2056), 1177 states have call predecessors, (2056), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2024-11-13 14:31:10,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27880 states to 27880 states and 42748 transitions. [2024-11-13 14:31:11,000 INFO L78 Accepts]: Start accepts. Automaton has 27880 states and 42748 transitions. Word has length 130 [2024-11-13 14:31:11,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:11,000 INFO L471 AbstractCegarLoop]: Abstraction has 27880 states and 42748 transitions. [2024-11-13 14:31:11,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:31:11,001 INFO L276 IsEmpty]: Start isEmpty. Operand 27880 states and 42748 transitions. [2024-11-13 14:31:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-13 14:31:11,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:11,071 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:11,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 14:31:11,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:11,272 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:31:11,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:11,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1293801407, now seen corresponding path program 1 times [2024-11-13 14:31:11,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:11,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521450610] [2024-11-13 14:31:11,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:11,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:11,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:31:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:11,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:31:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:11,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:31:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:11,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:31:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:11,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:31:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:11,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-13 14:31:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:11,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-13 14:31:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:11,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-13 14:31:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:31:11,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:11,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521450610] [2024-11-13 14:31:11,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521450610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:11,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111068197] [2024-11-13 14:31:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:11,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:11,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:11,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:11,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:31:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:11,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:31:11,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 14:31:11,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:31:11,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111068197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:11,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:31:11,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-13 14:31:11,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415260799] [2024-11-13 14:31:11,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:11,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:31:11,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:11,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:31:11,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:31:11,792 INFO L87 Difference]: Start difference. First operand 27880 states and 42748 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:31:15,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:15,344 INFO L93 Difference]: Finished difference Result 78681 states and 120014 transitions. [2024-11-13 14:31:15,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:31:15,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2024-11-13 14:31:15,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:15,666 INFO L225 Difference]: With dead ends: 78681 [2024-11-13 14:31:15,666 INFO L226 Difference]: Without dead ends: 52934 [2024-11-13 14:31:15,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:31:15,760 INFO L432 NwaCegarLoop]: 4195 mSDtfsCounter, 4145 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4145 SdHoareTripleChecker+Valid, 4409 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:15,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4145 Valid, 4409 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:31:15,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52934 states. [2024-11-13 14:31:20,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52934 to 52538. [2024-11-13 14:31:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52538 states, 45794 states have (on average 1.4785998165698564) internal successors, (67711), 46313 states have internal predecessors, (67711), 4006 states have call successors, (4006), 2353 states have call predecessors, (4006), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2024-11-13 14:31:20,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52538 states to 52538 states and 79680 transitions. [2024-11-13 14:31:20,417 INFO L78 Accepts]: Start accepts. Automaton has 52538 states and 79680 transitions. Word has length 130 [2024-11-13 14:31:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:20,418 INFO L471 AbstractCegarLoop]: Abstraction has 52538 states and 79680 transitions. [2024-11-13 14:31:20,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:31:20,418 INFO L276 IsEmpty]: Start isEmpty. Operand 52538 states and 79680 transitions. [2024-11-13 14:31:20,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-13 14:31:20,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:20,509 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:20,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:31:20,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:20,710 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:31:20,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2143352031, now seen corresponding path program 1 times [2024-11-13 14:31:20,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:20,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082134481] [2024-11-13 14:31:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:20,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:31:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:31:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:31:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:31:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:31:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-13 14:31:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-13 14:31:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-13 14:31:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:31:20,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:20,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082134481] [2024-11-13 14:31:20,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082134481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:20,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753019292] [2024-11-13 14:31:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:20,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:20,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:20,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:20,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:31:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:21,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:31:21,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 14:31:21,156 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:31:21,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753019292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:21,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:31:21,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-13 14:31:21,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924857686] [2024-11-13 14:31:21,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:21,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:31:21,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:21,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:31:21,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:31:21,159 INFO L87 Difference]: Start difference. First operand 52538 states and 79680 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 14:31:27,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:27,209 INFO L93 Difference]: Finished difference Result 150453 states and 229115 transitions. [2024-11-13 14:31:27,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:31:27,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 130 [2024-11-13 14:31:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:27,896 INFO L225 Difference]: With dead ends: 150453 [2024-11-13 14:31:27,896 INFO L226 Difference]: Without dead ends: 100049 [2024-11-13 14:31:28,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:31:28,101 INFO L432 NwaCegarLoop]: 4399 mSDtfsCounter, 196 mSDsluCounter, 4194 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 8593 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:28,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 8593 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:31:28,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100049 states. [2024-11-13 14:31:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100049 to 100049. [2024-11-13 14:31:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100049 states, 86830 states have (on average 1.4594610157779568) internal successors, (126725), 87734 states have internal predecessors, (126725), 7745 states have call successors, (7745), 4705 states have call predecessors, (7745), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2024-11-13 14:31:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100049 states to 100049 states and 151516 transitions. [2024-11-13 14:31:35,931 INFO L78 Accepts]: Start accepts. Automaton has 100049 states and 151516 transitions. Word has length 130 [2024-11-13 14:31:35,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:35,931 INFO L471 AbstractCegarLoop]: Abstraction has 100049 states and 151516 transitions. [2024-11-13 14:31:35,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 14:31:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 100049 states and 151516 transitions. [2024-11-13 14:31:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-13 14:31:36,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:36,199 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:36,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:31:36,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:36,399 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:31:36,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:36,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1078780715, now seen corresponding path program 1 times [2024-11-13 14:31:36,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:36,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23944567] [2024-11-13 14:31:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:36,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:31:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:31:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:31:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:31:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 14:31:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-13 14:31:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-13 14:31:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-13 14:31:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-13 14:31:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-13 14:31:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 14:31:36,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:36,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23944567] [2024-11-13 14:31:36,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23944567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:36,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090069091] [2024-11-13 14:31:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:36,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:36,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:36,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:36,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116a559d-6a46-4d2a-9fca-760a4dc2b154/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:31:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:36,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:31:36,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 14:31:37,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:31:37,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090069091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:31:37,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:31:37,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-13 14:31:37,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766884558] [2024-11-13 14:31:37,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:31:37,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:31:37,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:31:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:31:37,057 INFO L87 Difference]: Start difference. First operand 100049 states and 151516 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)