./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.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_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/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_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/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_54365622-225f-4e80-b645-21a99af1849f/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 b18a76c867b23fc238210d30f7146aaa10cc52d26bc0f62c42cd3676dc575e59 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:11:37,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:11:37,650 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:11:37,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:11:37,658 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:11:37,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:11:37,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:11:37,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:11:37,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:11:37,697 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:11:37,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:11:37,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:11:37,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:11:37,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:11:37,698 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:11:37,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:11:37,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:11:37,698 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:11:37,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:11:37,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:11:37,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:11:37,699 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:11:37,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:11:37,699 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:11:37,699 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:11:37,699 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:11:37,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:11:37,699 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:11:37,700 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:11:37,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:11:37,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:11:37,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:11:37,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:37,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:11:37,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:11:37,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:11:37,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:11:37,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:11:37,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:11:37,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:11:37,702 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:11:37,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:11:37,702 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_54365622-225f-4e80-b645-21a99af1849f/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 -> b18a76c867b23fc238210d30f7146aaa10cc52d26bc0f62c42cd3676dc575e59 [2024-11-13 16:11:37,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:11:37,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:11:37,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:11:37,988 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:11:37,988 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:11:37,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c Unable to find full path for "g++" [2024-11-13 16:11:40,105 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:11:40,971 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:11:40,972 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c [2024-11-13 16:11:41,030 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/data/cf548a0be/cc3c424dbd124b739d73f35bce315798/FLAGa88080afa [2024-11-13 16:11:41,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/data/cf548a0be/cc3c424dbd124b739d73f35bce315798 [2024-11-13 16:11:41,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:11:41,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:11:41,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:41,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:11:41,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:11:41,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:41" (1/1) ... [2024-11-13 16:11:41,074 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f147a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:41, skipping insertion in model container [2024-11-13 16:11:41,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:41" (1/1) ... [2024-11-13 16:11:41,302 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:11:43,362 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_54365622-225f-4e80-b645-21a99af1849f/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2024-11-13 16:11:43,420 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_54365622-225f-4e80-b645-21a99af1849f/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2024-11-13 16:11:43,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:43,709 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:11:45,017 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_54365622-225f-4e80-b645-21a99af1849f/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[376251,376264] [2024-11-13 16:11:45,028 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_54365622-225f-4e80-b645-21a99af1849f/sv-benchmarks/c/combinations/Problem05_label41+token_ring.04.cil-1.c[383339,383352] [2024-11-13 16:11:45,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:45,157 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:11:45,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45 WrapperNode [2024-11-13 16:11:45,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:45,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:45,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:11:45,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:11:45,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:45,264 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:45,928 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12745 [2024-11-13 16:11:45,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:45,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:11:45,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:11:45,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:11:45,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:45,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:45,997 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:46,104 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 16:11:46,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:46,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:46,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:46,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:46,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:46,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:46,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:11:46,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:11:46,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:11:46,545 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:11:46,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (1/1) ... [2024-11-13 16:11:46,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:46,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:46,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:11:46,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:11:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:11:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-13 16:11:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-13 16:11:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-13 16:11:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-13 16:11:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-13 16:11:46,642 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-13 16:11:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-13 16:11:46,642 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-13 16:11:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-13 16:11:46,642 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-13 16:11:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-13 16:11:46,643 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-13 16:11:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:11:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:11:46,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:11:46,839 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:11:46,843 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:12:00,253 INFO L? ?]: Removed 1707 outVars from TransFormulas that were not future-live. [2024-11-13 16:12:00,253 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:12:00,354 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:12:00,355 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-13 16:12:00,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:12:00 BoogieIcfgContainer [2024-11-13 16:12:00,355 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:12:00,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:12:00,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:12:00,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:12:00,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:11:41" (1/3) ... [2024-11-13 16:12:00,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32be8ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:12:00, skipping insertion in model container [2024-11-13 16:12:00,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:45" (2/3) ... [2024-11-13 16:12:00,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32be8ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:12:00, skipping insertion in model container [2024-11-13 16:12:00,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:12:00" (3/3) ... [2024-11-13 16:12:00,369 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.04.cil-1.c [2024-11-13 16:12:00,390 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:12:00,393 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label41+token_ring.04.cil-1.c that has 7 procedures, 2370 locations, 1 initial locations, 8 loop locations, and 2 error locations. [2024-11-13 16:12:00,571 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:12:00,590 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;@7957128d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:12:00,591 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 16:12:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 2370 states, 2343 states have (on average 1.8523260776781905) internal successors, (4340), 2346 states have internal predecessors, (4340), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 16:12:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:12:00,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:00,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:00,636 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:00,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:00,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1771272740, now seen corresponding path program 1 times [2024-11-13 16:12:00,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:00,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926527171] [2024-11-13 16:12:00,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:01,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:01,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:01,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:01,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:01,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:01,393 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 16:12:01,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:01,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926527171] [2024-11-13 16:12:01,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926527171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:01,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:01,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:12:01,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916729401] [2024-11-13 16:12:01,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:01,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:12:01,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:01,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:12:01,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:12:01,449 INFO L87 Difference]: Start difference. First operand has 2370 states, 2343 states have (on average 1.8523260776781905) internal successors, (4340), 2346 states have internal predecessors, (4340), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:02,955 INFO L93 Difference]: Finished difference Result 4785 states and 8828 transitions. [2024-11-13 16:12:02,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:12:02,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-13 16:12:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:03,002 INFO L225 Difference]: With dead ends: 4785 [2024-11-13 16:12:03,002 INFO L226 Difference]: Without dead ends: 2357 [2024-11-13 16:12:03,017 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 16:12:03,023 INFO L432 NwaCegarLoop]: 4199 mSDtfsCounter, 440 mSDsluCounter, 12267 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 16466 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:03,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 16466 Invalid, 460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 16:12:03,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2024-11-13 16:12:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2303. [2024-11-13 16:12:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2277 states have (on average 1.8414580588493632) internal successors, (4193), 2279 states have internal predecessors, (4193), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 16:12:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 4229 transitions. [2024-11-13 16:12:03,343 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 4229 transitions. Word has length 90 [2024-11-13 16:12:03,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:03,344 INFO L471 AbstractCegarLoop]: Abstraction has 2303 states and 4229 transitions. [2024-11-13 16:12:03,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:03,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 4229 transitions. [2024-11-13 16:12:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:12:03,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:03,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:03,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:12:03,356 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:03,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1684660894, now seen corresponding path program 1 times [2024-11-13 16:12:03,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:03,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252437146] [2024-11-13 16:12:03,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:03,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:03,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:03,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:04,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:04,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:04,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:04,072 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 16:12:04,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:04,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252437146] [2024-11-13 16:12:04,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252437146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:04,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:04,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:12:04,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664858623] [2024-11-13 16:12:04,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:04,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:12:04,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:04,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:12:04,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:12:04,079 INFO L87 Difference]: Start difference. First operand 2303 states and 4229 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:06,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:06,077 INFO L93 Difference]: Finished difference Result 2753 states and 4926 transitions. [2024-11-13 16:12:06,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:12:06,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-13 16:12:06,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:06,094 INFO L225 Difference]: With dead ends: 2753 [2024-11-13 16:12:06,094 INFO L226 Difference]: Without dead ends: 2583 [2024-11-13 16:12:06,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:12:06,098 INFO L432 NwaCegarLoop]: 4116 mSDtfsCounter, 4603 mSDsluCounter, 12334 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 16450 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:06,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4614 Valid, 16450 Invalid, 997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 16:12:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2024-11-13 16:12:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2476. [2024-11-13 16:12:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2430 states have (on average 1.8213991769547324) internal successors, (4426), 2433 states have internal predecessors, (4426), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2024-11-13 16:12:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4491 transitions. [2024-11-13 16:12:06,214 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4491 transitions. Word has length 90 [2024-11-13 16:12:06,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:06,214 INFO L471 AbstractCegarLoop]: Abstraction has 2476 states and 4491 transitions. [2024-11-13 16:12:06,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:06,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4491 transitions. [2024-11-13 16:12:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:12:06,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:06,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:06,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:12:06,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:06,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:06,224 INFO L85 PathProgramCache]: Analyzing trace with hash 510001442, now seen corresponding path program 1 times [2024-11-13 16:12:06,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:06,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627215631] [2024-11-13 16:12:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:06,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:06,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:06,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:06,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:06,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:06,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:06,618 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 16:12:06,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:06,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627215631] [2024-11-13 16:12:06,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627215631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:06,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:06,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:12:06,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938693842] [2024-11-13 16:12:06,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:06,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:12:06,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:06,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:12:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:12:06,623 INFO L87 Difference]: Start difference. First operand 2476 states and 4491 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:09,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:09,176 INFO L93 Difference]: Finished difference Result 3156 states and 5538 transitions. [2024-11-13 16:12:09,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:12:09,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-13 16:12:09,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:09,194 INFO L225 Difference]: With dead ends: 3156 [2024-11-13 16:12:09,194 INFO L226 Difference]: Without dead ends: 2813 [2024-11-13 16:12:09,197 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 16:12:09,198 INFO L432 NwaCegarLoop]: 4231 mSDtfsCounter, 4606 mSDsluCounter, 16725 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 20956 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:09,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 20956 Invalid, 1524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 16:12:09,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2024-11-13 16:12:09,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2638. [2024-11-13 16:12:09,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2572 states have (on average 1.802877138413686) internal successors, (4637), 2576 states have internal predecessors, (4637), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2024-11-13 16:12:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 4730 transitions. [2024-11-13 16:12:09,332 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 4730 transitions. Word has length 90 [2024-11-13 16:12:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:09,333 INFO L471 AbstractCegarLoop]: Abstraction has 2638 states and 4730 transitions. [2024-11-13 16:12:09,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:09,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 4730 transitions. [2024-11-13 16:12:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:12:09,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:09,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:09,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:12:09,337 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:09,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1397224288, now seen corresponding path program 1 times [2024-11-13 16:12:09,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:09,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660806812] [2024-11-13 16:12:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:09,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:09,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:09,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:09,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:09,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:09,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:09,603 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 16:12:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660806812] [2024-11-13 16:12:09,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660806812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:09,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:09,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:12:09,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714473671] [2024-11-13 16:12:09,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:09,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:12:09,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:09,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:12:09,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:12:09,606 INFO L87 Difference]: Start difference. First operand 2638 states and 4730 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:11,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:11,860 INFO L93 Difference]: Finished difference Result 3749 states and 6435 transitions. [2024-11-13 16:12:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:12:11,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-13 16:12:11,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:11,882 INFO L225 Difference]: With dead ends: 3749 [2024-11-13 16:12:11,882 INFO L226 Difference]: Without dead ends: 3244 [2024-11-13 16:12:11,886 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 16:12:11,887 INFO L432 NwaCegarLoop]: 4126 mSDtfsCounter, 4654 mSDsluCounter, 16435 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4665 SdHoareTripleChecker+Valid, 20561 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:11,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4665 Valid, 20561 Invalid, 1318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 16:12:11,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2024-11-13 16:12:12,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 2963. [2024-11-13 16:12:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 2857 states have (on average 1.7710885544277213) internal successors, (5060), 2863 states have internal predecessors, (5060), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2024-11-13 16:12:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 5213 transitions. [2024-11-13 16:12:12,040 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 5213 transitions. Word has length 90 [2024-11-13 16:12:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:12,040 INFO L471 AbstractCegarLoop]: Abstraction has 2963 states and 5213 transitions. [2024-11-13 16:12:12,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:12,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 5213 transitions. [2024-11-13 16:12:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:12:12,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:12,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:12,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:12:12,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:12,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:12,048 INFO L85 PathProgramCache]: Analyzing trace with hash -513818270, now seen corresponding path program 1 times [2024-11-13 16:12:12,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:12,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963163549] [2024-11-13 16:12:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:12,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:12,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:12,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:12,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:12,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:12,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:12,347 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 16:12:12,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:12,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963163549] [2024-11-13 16:12:12,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963163549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:12,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:12,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:12:12,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154245988] [2024-11-13 16:12:12,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:12,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:12:12,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:12:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:12:12,354 INFO L87 Difference]: Start difference. First operand 2963 states and 5213 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:14,820 INFO L93 Difference]: Finished difference Result 4894 states and 8162 transitions. [2024-11-13 16:12:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 16:12:14,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-13 16:12:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:14,841 INFO L225 Difference]: With dead ends: 4894 [2024-11-13 16:12:14,842 INFO L226 Difference]: Without dead ends: 4064 [2024-11-13 16:12:14,847 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 16:12:14,848 INFO L432 NwaCegarLoop]: 4229 mSDtfsCounter, 4604 mSDsluCounter, 16725 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4615 SdHoareTripleChecker+Valid, 20954 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:14,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4615 Valid, 20954 Invalid, 1515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 16:12:14,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2024-11-13 16:12:15,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 3614. [2024-11-13 16:12:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3428 states have (on average 1.7228704784130688) internal successors, (5906), 3438 states have internal predecessors, (5906), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2024-11-13 16:12:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 6185 transitions. [2024-11-13 16:12:15,062 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 6185 transitions. Word has length 90 [2024-11-13 16:12:15,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:15,063 INFO L471 AbstractCegarLoop]: Abstraction has 3614 states and 6185 transitions. [2024-11-13 16:12:15,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 6185 transitions. [2024-11-13 16:12:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:12:15,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:15,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:15,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:12:15,072 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:15,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:15,073 INFO L85 PathProgramCache]: Analyzing trace with hash -436917472, now seen corresponding path program 1 times [2024-11-13 16:12:15,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:15,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106442963] [2024-11-13 16:12:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:15,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:15,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:15,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:15,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:15,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:15,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:15,384 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 16:12:15,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:15,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106442963] [2024-11-13 16:12:15,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106442963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:15,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:15,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:12:15,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886752959] [2024-11-13 16:12:15,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:15,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:12:15,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:15,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:12:15,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:12:15,388 INFO L87 Difference]: Start difference. First operand 3614 states and 6185 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:17,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:17,526 INFO L93 Difference]: Finished difference Result 7696 states and 12390 transitions. [2024-11-13 16:12:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:12:17,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-13 16:12:17,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:17,556 INFO L225 Difference]: With dead ends: 7696 [2024-11-13 16:12:17,556 INFO L226 Difference]: Without dead ends: 6215 [2024-11-13 16:12:17,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:12:17,566 INFO L432 NwaCegarLoop]: 4227 mSDtfsCounter, 4774 mSDsluCounter, 16717 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4790 SdHoareTripleChecker+Valid, 20944 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:17,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4790 Valid, 20944 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 16:12:17,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2024-11-13 16:12:17,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 4906. [2024-11-13 16:12:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4906 states, 4568 states have (on average 1.665061295971979) internal successors, (7606), 4586 states have internal predecessors, (7606), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2024-11-13 16:12:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 8139 transitions. [2024-11-13 16:12:17,976 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 8139 transitions. Word has length 90 [2024-11-13 16:12:17,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:17,978 INFO L471 AbstractCegarLoop]: Abstraction has 4906 states and 8139 transitions. [2024-11-13 16:12:17,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:17,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 8139 transitions. [2024-11-13 16:12:17,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:12:17,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:17,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:17,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:12:17,985 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:17,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:17,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1471540318, now seen corresponding path program 1 times [2024-11-13 16:12:17,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:17,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314690344] [2024-11-13 16:12:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:17,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:18,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:18,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:18,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:18,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:18,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:18,209 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 16:12:18,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:18,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314690344] [2024-11-13 16:12:18,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314690344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:18,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:18,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:12:18,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772341807] [2024-11-13 16:12:18,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:18,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:12:18,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:18,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:12:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:12:18,211 INFO L87 Difference]: Start difference. First operand 4906 states and 8139 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:21,150 INFO L93 Difference]: Finished difference Result 12534 states and 19766 transitions. [2024-11-13 16:12:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:12:21,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-13 16:12:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:21,207 INFO L225 Difference]: With dead ends: 12534 [2024-11-13 16:12:21,207 INFO L226 Difference]: Without dead ends: 9761 [2024-11-13 16:12:21,220 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 16:12:21,222 INFO L432 NwaCegarLoop]: 4226 mSDtfsCounter, 4631 mSDsluCounter, 16714 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 20940 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:21,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4641 Valid, 20940 Invalid, 1717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 16:12:21,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2024-11-13 16:12:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 7399. [2024-11-13 16:12:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7399 states, 6765 states have (on average 1.608277900960828) internal successors, (10880), 6799 states have internal predecessors, (10880), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2024-11-13 16:12:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7399 states to 7399 states and 11959 transitions. [2024-11-13 16:12:21,848 INFO L78 Accepts]: Start accepts. Automaton has 7399 states and 11959 transitions. Word has length 90 [2024-11-13 16:12:21,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:21,851 INFO L471 AbstractCegarLoop]: Abstraction has 7399 states and 11959 transitions. [2024-11-13 16:12:21,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 7399 states and 11959 transitions. [2024-11-13 16:12:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:12:21,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:21,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:21,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:12:21,860 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:21,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:21,863 INFO L85 PathProgramCache]: Analyzing trace with hash 978914144, now seen corresponding path program 1 times [2024-11-13 16:12:21,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:21,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782101200] [2024-11-13 16:12:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:21,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:21,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:22,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:22,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:22,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:22,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:22,105 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 16:12:22,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:22,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782101200] [2024-11-13 16:12:22,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782101200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:22,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:22,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:12:22,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434528464] [2024-11-13 16:12:22,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:22,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:12:22,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:12:22,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:12:22,109 INFO L87 Difference]: Start difference. First operand 7399 states and 11959 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:25,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:25,084 INFO L93 Difference]: Finished difference Result 21673 states and 33860 transitions. [2024-11-13 16:12:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:12:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-13 16:12:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:25,161 INFO L225 Difference]: With dead ends: 21673 [2024-11-13 16:12:25,162 INFO L226 Difference]: Without dead ends: 16407 [2024-11-13 16:12:25,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:12:25,184 INFO L432 NwaCegarLoop]: 4227 mSDtfsCounter, 4694 mSDsluCounter, 16717 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4710 SdHoareTripleChecker+Valid, 20944 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:25,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4710 Valid, 20944 Invalid, 1457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 16:12:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16407 states. [2024-11-13 16:12:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16407 to 12448. [2024-11-13 16:12:26,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12448 states, 11238 states have (on average 1.5634454529275672) internal successors, (17570), 11304 states have internal predecessors, (17570), 754 states have call successors, (754), 390 states have call predecessors, (754), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2024-11-13 16:12:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12448 states to 12448 states and 19871 transitions. [2024-11-13 16:12:26,146 INFO L78 Accepts]: Start accepts. Automaton has 12448 states and 19871 transitions. Word has length 90 [2024-11-13 16:12:26,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:26,147 INFO L471 AbstractCegarLoop]: Abstraction has 12448 states and 19871 transitions. [2024-11-13 16:12:26,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 12448 states and 19871 transitions. [2024-11-13 16:12:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:12:26,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:26,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:26,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:12:26,158 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:26,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:26,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1932854302, now seen corresponding path program 1 times [2024-11-13 16:12:26,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:26,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010409370] [2024-11-13 16:12:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:26,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:26,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:26,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:26,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:26,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:26,380 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 16:12:26,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010409370] [2024-11-13 16:12:26,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010409370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:26,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:26,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:12:26,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591429488] [2024-11-13 16:12:26,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:26,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:12:26,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:26,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:12:26,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:12:26,383 INFO L87 Difference]: Start difference. First operand 12448 states and 19871 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:30,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:30,641 INFO L93 Difference]: Finished difference Result 39568 states and 62106 transitions. [2024-11-13 16:12:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:12:30,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-13 16:12:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:30,797 INFO L225 Difference]: With dead ends: 39568 [2024-11-13 16:12:30,797 INFO L226 Difference]: Without dead ends: 29253 [2024-11-13 16:12:30,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:12:30,844 INFO L432 NwaCegarLoop]: 4227 mSDtfsCounter, 4654 mSDsluCounter, 16717 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 20944 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:30,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4670 Valid, 20944 Invalid, 1444 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 16:12:30,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29253 states. [2024-11-13 16:12:32,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29253 to 22513. [2024-11-13 16:12:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22513 states, 20183 states have (on average 1.5349551602834068) internal successors, (30980), 20313 states have internal predecessors, (30980), 1426 states have call successors, (1426), 774 states have call predecessors, (1426), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2024-11-13 16:12:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22513 states to 22513 states and 36147 transitions. [2024-11-13 16:12:32,952 INFO L78 Accepts]: Start accepts. Automaton has 22513 states and 36147 transitions. Word has length 90 [2024-11-13 16:12:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:32,957 INFO L471 AbstractCegarLoop]: Abstraction has 22513 states and 36147 transitions. [2024-11-13 16:12:32,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 22513 states and 36147 transitions. [2024-11-13 16:12:33,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:12:33,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:33,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:33,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 16:12:33,005 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:33,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:33,006 INFO L85 PathProgramCache]: Analyzing trace with hash 716700576, now seen corresponding path program 1 times [2024-11-13 16:12:33,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:33,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401254406] [2024-11-13 16:12:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:33,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:33,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:33,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:33,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:33,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:33,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:33,383 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 16:12:33,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401254406] [2024-11-13 16:12:33,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401254406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:33,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:33,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 16:12:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47191108] [2024-11-13 16:12:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:33,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:12:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:12:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:12:33,385 INFO L87 Difference]: Start difference. First operand 22513 states and 36147 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:40,144 INFO L93 Difference]: Finished difference Result 74103 states and 118584 transitions. [2024-11-13 16:12:40,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 16:12:40,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-13 16:12:40,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:40,647 INFO L225 Difference]: With dead ends: 74103 [2024-11-13 16:12:40,648 INFO L226 Difference]: Without dead ends: 53723 [2024-11-13 16:12:40,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:12:40,818 INFO L432 NwaCegarLoop]: 4216 mSDtfsCounter, 4596 mSDsluCounter, 16702 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4606 SdHoareTripleChecker+Valid, 20918 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:40,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4606 Valid, 20918 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 16:12:40,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53723 states. [2024-11-13 16:12:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53723 to 42554. [2024-11-13 16:12:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42554 states, 38064 states have (on average 1.519913829340059) internal successors, (57854), 38322 states have internal predecessors, (57854), 2698 states have call successors, (2698), 1534 states have call predecessors, (2698), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2024-11-13 16:12:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42554 states to 42554 states and 70067 transitions. [2024-11-13 16:12:44,986 INFO L78 Accepts]: Start accepts. Automaton has 42554 states and 70067 transitions. Word has length 90 [2024-11-13 16:12:44,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:44,988 INFO L471 AbstractCegarLoop]: Abstraction has 42554 states and 70067 transitions. [2024-11-13 16:12:44,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 42554 states and 70067 transitions. [2024-11-13 16:12:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 16:12:45,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:45,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:45,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 16:12:45,028 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:45,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash -15266850, now seen corresponding path program 1 times [2024-11-13 16:12:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948813648] [2024-11-13 16:12:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:45,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:45,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:45,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:45,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:45,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:45,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:45,207 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 16:12:45,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:45,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948813648] [2024-11-13 16:12:45,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948813648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:45,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:45,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:12:45,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724204025] [2024-11-13 16:12:45,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:45,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:12:45,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:12:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:12:45,210 INFO L87 Difference]: Start difference. First operand 42554 states and 70067 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:51,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:51,954 INFO L93 Difference]: Finished difference Result 116705 states and 188614 transitions. [2024-11-13 16:12:51,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:12:51,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-13 16:12:51,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:52,413 INFO L225 Difference]: With dead ends: 116705 [2024-11-13 16:12:52,413 INFO L226 Difference]: Without dead ends: 76285 [2024-11-13 16:12:52,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:12:52,629 INFO L432 NwaCegarLoop]: 4265 mSDtfsCounter, 4802 mSDsluCounter, 12442 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4831 SdHoareTripleChecker+Valid, 16707 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:52,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4831 Valid, 16707 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 16:12:52,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76285 states. [2024-11-13 16:12:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76285 to 62590. [2024-11-13 16:12:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62590 states, 55776 states have (on average 1.5023666092943202) internal successors, (83796), 56291 states have internal predecessors, (83796), 4120 states have call successors, (4120), 2308 states have call predecessors, (4120), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2024-11-13 16:12:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62590 states to 62590 states and 101041 transitions. [2024-11-13 16:12:58,499 INFO L78 Accepts]: Start accepts. Automaton has 62590 states and 101041 transitions. Word has length 90 [2024-11-13 16:12:58,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:58,500 INFO L471 AbstractCegarLoop]: Abstraction has 62590 states and 101041 transitions. [2024-11-13 16:12:58,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 16:12:58,500 INFO L276 IsEmpty]: Start isEmpty. Operand 62590 states and 101041 transitions. [2024-11-13 16:12:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-13 16:12:58,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:58,693 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, 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] [2024-11-13 16:12:58,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 16:12:58,693 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:58,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:58,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1636536831, now seen corresponding path program 1 times [2024-11-13 16:12:58,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:58,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540226289] [2024-11-13 16:12:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:58,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:58,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 16:12:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:58,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 16:12:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:58,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 16:12:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:58,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:12:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:58,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 16:12:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:58,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-13 16:12:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:58,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-13 16:12:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:59,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-13 16:12:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 16:12:59,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:59,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540226289] [2024-11-13 16:12:59,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540226289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:59,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355028661] [2024-11-13 16:12:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:59,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:59,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:59,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:59,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54365622-225f-4e80-b645-21a99af1849f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:12:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:59,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:12:59,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 16:12:59,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:12:59,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355028661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:59,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:12:59,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-13 16:12:59,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021522276] [2024-11-13 16:12:59,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:59,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:12:59,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:59,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:12:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:12:59,355 INFO L87 Difference]: Start difference. First operand 62590 states and 101041 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)