./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX --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 4d0fbec14d1477738cb6d25ea9b61fc7005f787f2c8a0ac2c555d7e4fa1dbf47 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:52:06,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:52:07,006 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:52:07,011 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:52:07,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:52:07,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:52:07,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:52:07,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:52:07,035 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:52:07,036 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:52:07,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:52:07,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:52:07,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:52:07,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:52:07,038 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:52:07,039 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:52:07,039 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:52:07,040 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:52:07,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:52:07,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:52:07,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:52:07,042 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:52:07,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:52:07,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:52:07,043 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:52:07,043 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:52:07,043 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:52:07,044 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:52:07,044 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:52:07,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:52:07,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:52:07,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:52:07,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:52:07,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:52:07,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:52:07,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:52:07,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:52:07,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:52:07,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:52:07,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:52:07,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:52:07,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:52:07,051 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d0fbec14d1477738cb6d25ea9b61fc7005f787f2c8a0ac2c555d7e4fa1dbf47 [2024-11-08 17:52:07,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:52:07,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:52:07,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:52:07,453 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:52:07,454 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:52:07,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/systemc/token_ring.06.cil-2.c Unable to find full path for "g++" [2024-11-08 17:52:10,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:52:10,244 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:52:10,244 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/sv-benchmarks/c/systemc/token_ring.06.cil-2.c [2024-11-08 17:52:10,257 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/data/e074bdf36/50215fa0bcec4aeea1d244df1c8d9cdd/FLAG000efe410 [2024-11-08 17:52:10,274 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/data/e074bdf36/50215fa0bcec4aeea1d244df1c8d9cdd [2024-11-08 17:52:10,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:52:10,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:52:10,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:52:10,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:52:10,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:52:10,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:52:10" (1/1) ... [2024-11-08 17:52:10,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ab3223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:10, skipping insertion in model container [2024-11-08 17:52:10,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:52:10" (1/1) ... [2024-11-08 17:52:10,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:52:10,650 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_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/sv-benchmarks/c/systemc/token_ring.06.cil-2.c[671,684] [2024-11-08 17:52:10,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:52:10,861 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:52:10,878 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_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/sv-benchmarks/c/systemc/token_ring.06.cil-2.c[671,684] [2024-11-08 17:52:10,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:52:11,026 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:52:11,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11 WrapperNode [2024-11-08 17:52:11,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:52:11,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:52:11,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:52:11,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:52:11,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,132 INFO L138 Inliner]: procedures = 40, calls = 49, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 510 [2024-11-08 17:52:11,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:52:11,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:52:11,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:52:11,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:52:11,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,177 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]. [2024-11-08 17:52:11,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,189 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:52:11,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:52:11,231 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:52:11,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:52:11,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (1/1) ... [2024-11-08 17:52:11,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:52:11,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:52:11,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:52:11,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7e5552-bfb6-4bc9-a8b8-7461e960e7f3/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:52:11,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:52:11,321 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-08 17:52:11,322 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-08 17:52:11,322 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-08 17:52:11,323 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-08 17:52:11,323 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-08 17:52:11,323 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-08 17:52:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-08 17:52:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-08 17:52:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-08 17:52:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-08 17:52:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:52:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-08 17:52:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-08 17:52:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:52:11,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:52:11,436 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:52:11,439 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:52:12,450 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-08 17:52:12,450 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:52:12,488 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:52:12,488 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-08 17:52:12,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:52:12 BoogieIcfgContainer [2024-11-08 17:52:12,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:52:12,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:52:12,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:52:12,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:52:12,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:52:10" (1/3) ... [2024-11-08 17:52:12,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a40fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:52:12, skipping insertion in model container [2024-11-08 17:52:12,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:52:11" (2/3) ... [2024-11-08 17:52:12,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a40fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:52:12, skipping insertion in model container [2024-11-08 17:52:12,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:52:12" (3/3) ... [2024-11-08 17:52:12,510 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-2.c [2024-11-08 17:52:12,539 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:52:12,540 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:52:12,661 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:52:12,669 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;@565397bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:52:12,670 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:52:12,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 211 states have (on average 1.6113744075829384) internal successors, (340), 213 states have internal predecessors, (340), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-08 17:52:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 17:52:12,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:12,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:12,703 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:12,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:12,710 INFO L85 PathProgramCache]: Analyzing trace with hash -668534673, now seen corresponding path program 1 times [2024-11-08 17:52:12,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:12,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455585432] [2024-11-08 17:52:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:12,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:13,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 17:52:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:13,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:52:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:13,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:52:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:13,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:52:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:13,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 17:52:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:13,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:13,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455585432] [2024-11-08 17:52:13,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455585432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:13,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:13,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:52:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895386862] [2024-11-08 17:52:13,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:13,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:52:13,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:13,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:52:13,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:52:13,593 INFO L87 Difference]: Start difference. First operand has 239 states, 211 states have (on average 1.6113744075829384) internal successors, (340), 213 states have internal predecessors, (340), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-08 17:52:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:15,448 INFO L93 Difference]: Finished difference Result 547 states and 882 transitions. [2024-11-08 17:52:15,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:52:15,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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 111 [2024-11-08 17:52:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:15,471 INFO L225 Difference]: With dead ends: 547 [2024-11-08 17:52:15,471 INFO L226 Difference]: Without dead ends: 310 [2024-11-08 17:52:15,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:52:15,486 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 595 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:52:15,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 477 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 17:52:15,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-08 17:52:15,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 234. [2024-11-08 17:52:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 207 states have (on average 1.5217391304347827) internal successors, (315), 208 states have internal predecessors, (315), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-08 17:52:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 355 transitions. [2024-11-08 17:52:15,571 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 355 transitions. Word has length 111 [2024-11-08 17:52:15,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:15,572 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 355 transitions. [2024-11-08 17:52:15,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-08 17:52:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 355 transitions. [2024-11-08 17:52:15,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 17:52:15,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:15,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:15,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:52:15,579 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:15,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2057828687, now seen corresponding path program 1 times [2024-11-08 17:52:15,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:15,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924407847] [2024-11-08 17:52:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:15,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:15,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 17:52:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:15,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:52:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:15,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:52:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:16,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:52:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:16,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 17:52:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:16,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:16,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924407847] [2024-11-08 17:52:16,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924407847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:16,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:16,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:52:16,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787125842] [2024-11-08 17:52:16,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:16,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:52:16,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:16,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:52:16,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:52:16,056 INFO L87 Difference]: Start difference. First operand 234 states and 355 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-08 17:52:18,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:18,410 INFO L93 Difference]: Finished difference Result 832 states and 1296 transitions. [2024-11-08 17:52:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:52:18,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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 111 [2024-11-08 17:52:18,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:18,420 INFO L225 Difference]: With dead ends: 832 [2024-11-08 17:52:18,420 INFO L226 Difference]: Without dead ends: 612 [2024-11-08 17:52:18,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:52:18,426 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 878 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:52:18,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 794 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 17:52:18,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-08 17:52:18,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 461. [2024-11-08 17:52:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 412 states have (on average 1.5339805825242718) internal successors, (632), 414 states have internal predecessors, (632), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2024-11-08 17:52:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 705 transitions. [2024-11-08 17:52:18,518 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 705 transitions. Word has length 111 [2024-11-08 17:52:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:18,519 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 705 transitions. [2024-11-08 17:52:18,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-08 17:52:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 705 transitions. [2024-11-08 17:52:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 17:52:18,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:18,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:18,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:52:18,525 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:18,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash -778830027, now seen corresponding path program 1 times [2024-11-08 17:52:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:18,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413769438] [2024-11-08 17:52:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:18,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:18,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 17:52:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:18,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:52:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:18,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:52:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:18,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:52:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:18,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 17:52:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:18,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:18,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413769438] [2024-11-08 17:52:18,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413769438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:18,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:18,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:52:18,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765986571] [2024-11-08 17:52:18,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:18,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:52:18,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:18,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:52:18,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:52:18,862 INFO L87 Difference]: Start difference. First operand 461 states and 705 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:21,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:21,983 INFO L93 Difference]: Finished difference Result 1369 states and 2130 transitions. [2024-11-08 17:52:21,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:52:21,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2024-11-08 17:52:21,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:22,005 INFO L225 Difference]: With dead ends: 1369 [2024-11-08 17:52:22,005 INFO L226 Difference]: Without dead ends: 922 [2024-11-08 17:52:22,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:52:22,015 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 889 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:52:22,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1516 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 17:52:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-08 17:52:22,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 673. [2024-11-08 17:52:22,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 602 states have (on average 1.526578073089701) internal successors, (919), 605 states have internal predecessors, (919), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2024-11-08 17:52:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1024 transitions. [2024-11-08 17:52:22,109 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1024 transitions. Word has length 111 [2024-11-08 17:52:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:22,110 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1024 transitions. [2024-11-08 17:52:22,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1024 transitions. [2024-11-08 17:52:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 17:52:22,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:22,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:22,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:52:22,114 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:22,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:22,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1897162355, now seen corresponding path program 1 times [2024-11-08 17:52:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:22,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685570546] [2024-11-08 17:52:22,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:22,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:22,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 17:52:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:22,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:52:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:22,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:52:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:22,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:52:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:22,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 17:52:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:22,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685570546] [2024-11-08 17:52:22,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685570546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:22,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:22,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:52:22,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337183843] [2024-11-08 17:52:22,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:22,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:52:22,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:52:22,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:52:22,517 INFO L87 Difference]: Start difference. First operand 673 states and 1024 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:25,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:25,447 INFO L93 Difference]: Finished difference Result 2160 states and 3351 transitions. [2024-11-08 17:52:25,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:52:25,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2024-11-08 17:52:25,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:25,458 INFO L225 Difference]: With dead ends: 2160 [2024-11-08 17:52:25,458 INFO L226 Difference]: Without dead ends: 1501 [2024-11-08 17:52:25,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:52:25,462 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 959 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:52:25,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 987 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 17:52:25,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2024-11-08 17:52:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1098. [2024-11-08 17:52:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 983 states have (on average 1.5198372329603256) internal successors, (1494), 988 states have internal predecessors, (1494), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2024-11-08 17:52:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1667 transitions. [2024-11-08 17:52:25,578 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1667 transitions. Word has length 111 [2024-11-08 17:52:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:25,579 INFO L471 AbstractCegarLoop]: Abstraction has 1098 states and 1667 transitions. [2024-11-08 17:52:25,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1667 transitions. [2024-11-08 17:52:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 17:52:25,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:25,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:25,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:52:25,582 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:25,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1013653365, now seen corresponding path program 1 times [2024-11-08 17:52:25,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:25,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645757230] [2024-11-08 17:52:25,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:25,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:25,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 17:52:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:25,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:52:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:25,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:52:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:25,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:52:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:25,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 17:52:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:25,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:25,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645757230] [2024-11-08 17:52:25,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645757230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:25,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:25,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:52:25,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337752937] [2024-11-08 17:52:25,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:25,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:52:25,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:25,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:52:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:52:25,855 INFO L87 Difference]: Start difference. First operand 1098 states and 1667 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:28,868 INFO L93 Difference]: Finished difference Result 3682 states and 5690 transitions. [2024-11-08 17:52:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:52:28,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2024-11-08 17:52:28,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:28,887 INFO L225 Difference]: With dead ends: 3682 [2024-11-08 17:52:28,887 INFO L226 Difference]: Without dead ends: 2598 [2024-11-08 17:52:28,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:52:28,897 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 887 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:52:28,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1514 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 17:52:28,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2024-11-08 17:52:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 1954. [2024-11-08 17:52:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1751 states have (on average 1.515705311250714) internal successors, (2654), 1760 states have internal predecessors, (2654), 140 states have call successors, (140), 54 states have call predecessors, (140), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2024-11-08 17:52:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2969 transitions. [2024-11-08 17:52:29,146 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2969 transitions. Word has length 111 [2024-11-08 17:52:29,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:29,147 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 2969 transitions. [2024-11-08 17:52:29,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:29,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2969 transitions. [2024-11-08 17:52:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 17:52:29,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:29,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:29,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:52:29,154 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:29,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:29,155 INFO L85 PathProgramCache]: Analyzing trace with hash -926928649, now seen corresponding path program 1 times [2024-11-08 17:52:29,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:29,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684621385] [2024-11-08 17:52:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:29,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:29,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 17:52:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:29,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:52:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:29,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:52:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:29,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:52:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:29,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 17:52:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:29,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:29,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684621385] [2024-11-08 17:52:29,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684621385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:29,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:29,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:52:29,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705151020] [2024-11-08 17:52:29,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:29,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:52:29,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:29,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:52:29,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:52:29,450 INFO L87 Difference]: Start difference. First operand 1954 states and 2969 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:33,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:33,198 INFO L93 Difference]: Finished difference Result 6736 states and 10402 transitions. [2024-11-08 17:52:33,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:52:33,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2024-11-08 17:52:33,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:33,257 INFO L225 Difference]: With dead ends: 6736 [2024-11-08 17:52:33,257 INFO L226 Difference]: Without dead ends: 4796 [2024-11-08 17:52:33,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:52:33,267 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 886 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:52:33,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1514 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 17:52:33,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4796 states. [2024-11-08 17:52:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4796 to 3671. [2024-11-08 17:52:33,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3292 states have (on average 1.5127582017010937) internal successors, (4980), 3309 states have internal predecessors, (4980), 260 states have call successors, (260), 102 states have call predecessors, (260), 118 states have return successors, (357), 275 states have call predecessors, (357), 260 states have call successors, (357) [2024-11-08 17:52:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 5597 transitions. [2024-11-08 17:52:33,726 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 5597 transitions. Word has length 111 [2024-11-08 17:52:33,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:33,727 INFO L471 AbstractCegarLoop]: Abstraction has 3671 states and 5597 transitions. [2024-11-08 17:52:33,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:33,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 5597 transitions. [2024-11-08 17:52:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 17:52:33,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:33,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:33,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:52:33,734 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:33,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:33,735 INFO L85 PathProgramCache]: Analyzing trace with hash 950134581, now seen corresponding path program 1 times [2024-11-08 17:52:33,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:33,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812951786] [2024-11-08 17:52:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:33,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:33,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 17:52:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:33,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:52:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:34,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:52:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:34,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:52:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:34,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 17:52:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:34,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812951786] [2024-11-08 17:52:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812951786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:34,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:34,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:52:34,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919840037] [2024-11-08 17:52:34,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:34,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:52:34,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:34,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:52:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:52:34,053 INFO L87 Difference]: Start difference. First operand 3671 states and 5597 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:37,570 INFO L93 Difference]: Finished difference Result 12843 states and 19884 transitions. [2024-11-08 17:52:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:52:37,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2024-11-08 17:52:37,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:37,633 INFO L225 Difference]: With dead ends: 12843 [2024-11-08 17:52:37,634 INFO L226 Difference]: Without dead ends: 9186 [2024-11-08 17:52:37,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:52:37,651 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 885 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:52:37,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1514 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1949 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 17:52:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9186 states. [2024-11-08 17:52:38,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9186 to 7120. [2024-11-08 17:52:38,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 6389 states have (on average 1.5110345907027705) internal successors, (9654), 6422 states have internal predecessors, (9654), 500 states have call successors, (500), 198 states have call predecessors, (500), 230 states have return successors, (775), 531 states have call predecessors, (775), 500 states have call successors, (775) [2024-11-08 17:52:38,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 10929 transitions. [2024-11-08 17:52:38,430 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 10929 transitions. Word has length 111 [2024-11-08 17:52:38,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:38,435 INFO L471 AbstractCegarLoop]: Abstraction has 7120 states and 10929 transitions. [2024-11-08 17:52:38,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:38,435 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 10929 transitions. [2024-11-08 17:52:38,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 17:52:38,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:38,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:38,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:52:38,445 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:38,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:38,445 INFO L85 PathProgramCache]: Analyzing trace with hash 179401015, now seen corresponding path program 1 times [2024-11-08 17:52:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:38,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712573782] [2024-11-08 17:52:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:38,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:38,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 17:52:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:38,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:52:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:38,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:52:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:38,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:52:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:38,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 17:52:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:38,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:38,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712573782] [2024-11-08 17:52:38,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712573782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:38,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:38,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:52:38,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909648271] [2024-11-08 17:52:38,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:38,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:52:38,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:38,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:52:38,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:52:38,792 INFO L87 Difference]: Start difference. First operand 7120 states and 10929 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:43,474 INFO L93 Difference]: Finished difference Result 28034 states and 43524 transitions. [2024-11-08 17:52:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:52:43,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2024-11-08 17:52:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:43,596 INFO L225 Difference]: With dead ends: 28034 [2024-11-08 17:52:43,596 INFO L226 Difference]: Without dead ends: 20928 [2024-11-08 17:52:43,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:52:43,633 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 1136 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:52:43,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 1504 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1929 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 17:52:43,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20928 states. [2024-11-08 17:52:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20928 to 13953. [2024-11-08 17:52:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13953 states, 12550 states have (on average 1.5126693227091634) internal successors, (18984), 12615 states have internal predecessors, (18984), 948 states have call successors, (948), 390 states have call predecessors, (948), 454 states have return successors, (1741), 1011 states have call predecessors, (1741), 948 states have call successors, (1741) [2024-11-08 17:52:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13953 states to 13953 states and 21673 transitions. [2024-11-08 17:52:45,569 INFO L78 Accepts]: Start accepts. Automaton has 13953 states and 21673 transitions. Word has length 111 [2024-11-08 17:52:45,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:45,569 INFO L471 AbstractCegarLoop]: Abstraction has 13953 states and 21673 transitions. [2024-11-08 17:52:45,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 13953 states and 21673 transitions. [2024-11-08 17:52:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 17:52:45,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:45,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:45,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:52:45,588 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:45,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:45,589 INFO L85 PathProgramCache]: Analyzing trace with hash -815292683, now seen corresponding path program 1 times [2024-11-08 17:52:45,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:45,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483275632] [2024-11-08 17:52:45,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:45,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:45,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 17:52:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:45,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:52:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:45,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:52:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:45,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:52:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:45,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 17:52:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:45,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:45,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483275632] [2024-11-08 17:52:45,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483275632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:45,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:45,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:52:45,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647298889] [2024-11-08 17:52:45,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:45,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:52:45,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:45,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:52:45,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:52:45,899 INFO L87 Difference]: Start difference. First operand 13953 states and 21673 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:52:51,516 INFO L93 Difference]: Finished difference Result 54385 states and 85322 transitions. [2024-11-08 17:52:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:52:51,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2024-11-08 17:52:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:52:51,710 INFO L225 Difference]: With dead ends: 54385 [2024-11-08 17:52:51,710 INFO L226 Difference]: Without dead ends: 40446 [2024-11-08 17:52:51,786 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 [2024-11-08 17:52:51,787 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 935 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:52:51,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 1500 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 17:52:51,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40446 states. [2024-11-08 17:52:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40446 to 27266. [2024-11-08 17:52:55,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27266 states, 24551 states have (on average 1.5136654311433342) internal successors, (37162), 24680 states have internal predecessors, (37162), 1812 states have call successors, (1812), 774 states have call predecessors, (1812), 902 states have return successors, (4127), 1939 states have call predecessors, (4127), 1812 states have call successors, (4127) [2024-11-08 17:52:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27266 states to 27266 states and 43101 transitions. [2024-11-08 17:52:55,546 INFO L78 Accepts]: Start accepts. Automaton has 27266 states and 43101 transitions. Word has length 111 [2024-11-08 17:52:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:52:55,547 INFO L471 AbstractCegarLoop]: Abstraction has 27266 states and 43101 transitions. [2024-11-08 17:52:55,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:52:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand 27266 states and 43101 transitions. [2024-11-08 17:52:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 17:52:55,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:52:55,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:52:55,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:52:55,583 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:52:55,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:52:55,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1401568905, now seen corresponding path program 1 times [2024-11-08 17:52:55,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:52:55,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597747433] [2024-11-08 17:52:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:52:55,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:52:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:55,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 17:52:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:55,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:52:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:55,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:52:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:55,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:52:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:55,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 17:52:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:52:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:52:55,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:52:55,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597747433] [2024-11-08 17:52:55,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597747433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:52:55,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:52:55,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:52:55,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265437554] [2024-11-08 17:52:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:52:55,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:52:55,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:52:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:52:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:52:55,893 INFO L87 Difference]: Start difference. First operand 27266 states and 43101 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:53:04,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:53:04,655 INFO L93 Difference]: Finished difference Result 104944 states and 167376 transitions. [2024-11-08 17:53:04,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:53:04,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2024-11-08 17:53:04,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:53:05,376 INFO L225 Difference]: With dead ends: 104944 [2024-11-08 17:53:05,376 INFO L226 Difference]: Without dead ends: 77692 [2024-11-08 17:53:05,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:53:05,533 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 1056 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:53:05,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 1504 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 17:53:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77692 states. [2024-11-08 17:53:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77692 to 54147. [2024-11-08 17:53:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54147 states, 48872 states have (on average 1.5160419053854968) internal successors, (74092), 49129 states have internal predecessors, (74092), 3476 states have call successors, (3476), 1542 states have call predecessors, (3476), 1798 states have return successors, (10293), 3731 states have call predecessors, (10293), 3476 states have call successors, (10293) [2024-11-08 17:53:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54147 states to 54147 states and 87861 transitions. [2024-11-08 17:53:10,861 INFO L78 Accepts]: Start accepts. Automaton has 54147 states and 87861 transitions. Word has length 111 [2024-11-08 17:53:10,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:53:10,861 INFO L471 AbstractCegarLoop]: Abstraction has 54147 states and 87861 transitions. [2024-11-08 17:53:10,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:53:10,862 INFO L276 IsEmpty]: Start isEmpty. Operand 54147 states and 87861 transitions. [2024-11-08 17:53:10,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 17:53:10,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:53:10,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:53:10,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:53:10,911 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:53:10,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:53:10,912 INFO L85 PathProgramCache]: Analyzing trace with hash 934823605, now seen corresponding path program 1 times [2024-11-08 17:53:10,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:53:10,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023620968] [2024-11-08 17:53:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:53:10,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:53:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:53:11,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 17:53:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:53:11,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 17:53:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:53:11,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 17:53:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:53:11,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:53:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:53:11,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 17:53:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:53:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:53:11,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:53:11,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023620968] [2024-11-08 17:53:11,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023620968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:53:11,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:53:11,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:53:11,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405031550] [2024-11-08 17:53:11,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:53:11,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:53:11,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:53:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:53:11,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:53:11,165 INFO L87 Difference]: Start difference. First operand 54147 states and 87861 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-11-08 17:53:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:53:24,362 INFO L93 Difference]: Finished difference Result 204527 states and 334950 transitions. [2024-11-08 17:53:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:53:24,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2024-11-08 17:53:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:53:25,432 INFO L225 Difference]: With dead ends: 204527 [2024-11-08 17:53:25,432 INFO L226 Difference]: Without dead ends: 150394 [2024-11-08 17:53:25,667 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 [2024-11-08 17:53:25,668 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 1075 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:53:25,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 985 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 17:53:25,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150394 states.