./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu --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 2dda75b6d46698b5258f612b82d0e93d324481eaa047be7e62672a619c582b4e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:34,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:34,615 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:59:34,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:34,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:34,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:34,660 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:34,661 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:34,662 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:34,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:34,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:34,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:34,668 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:34,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:34,670 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:59:34,670 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:34,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:34,671 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:34,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:34,671 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:59:34,672 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:34,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:59:34,673 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:34,673 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:59:34,674 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:34,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:34,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:34,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:34,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:34,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:34,677 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:34,678 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:59:34,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:34,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:34,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:34,679 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:59:34,679 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:34,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:34,679 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:34,679 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_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dda75b6d46698b5258f612b82d0e93d324481eaa047be7e62672a619c582b4e [2023-11-19 07:59:34,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:34,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:34,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:34,991 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:34,991 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:34,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.c [2023-11-19 07:59:38,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:38,957 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:38,957 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.c [2023-11-19 07:59:39,015 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/data/f1d8cbbdb/b1a9e8a8075b455f825ed4495dc525e8/FLAG67fa49a21 [2023-11-19 07:59:39,030 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/data/f1d8cbbdb/b1a9e8a8075b455f825ed4495dc525e8 [2023-11-19 07:59:39,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:39,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:39,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:39,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:39,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:39,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16aa8bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:39, skipping insertion in model container [2023-11-19 07:59:39,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:39" (1/1) ... [2023-11-19 07:59:39,373 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:41,670 WARN L240 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_846a7d00-183b-4a17-acc5-29d6e17a0ce3/sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.c[382357,382370] [2023-11-19 07:59:41,698 WARN L240 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_846a7d00-183b-4a17-acc5-29d6e17a0ce3/sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.c[383339,383352] [2023-11-19 07:59:41,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:41,970 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:43,260 WARN L240 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_846a7d00-183b-4a17-acc5-29d6e17a0ce3/sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.c[382357,382370] [2023-11-19 07:59:43,275 WARN L240 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_846a7d00-183b-4a17-acc5-29d6e17a0ce3/sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.c[383339,383352] [2023-11-19 07:59:43,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:43,415 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:43,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43 WrapperNode [2023-11-19 07:59:43,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:43,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:43,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:43,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:43,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:43,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:44,053 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12868 [2023-11-19 07:59:44,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:44,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:44,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:44,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:44,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:44,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:44,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:44,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:44,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:44,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:44,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:44,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:44,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:44,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:44,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:44,581 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:44,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:44,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:44,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:44,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:44,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_846a7d00-183b-4a17-acc5-29d6e17a0ce3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-19 07:59:44,786 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-19 07:59:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-19 07:59:44,786 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-19 07:59:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-19 07:59:44,786 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-19 07:59:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-19 07:59:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-19 07:59:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-19 07:59:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-19 07:59:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-19 07:59:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-19 07:59:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:44,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:44,983 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:44,985 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:54,975 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:55,010 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:55,011 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-19 07:59:55,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:55 BoogieIcfgContainer [2023-11-19 07:59:55,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:55,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:55,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:55,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:55,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:39" (1/3) ... [2023-11-19 07:59:55,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bb8e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:55, skipping insertion in model container [2023-11-19 07:59:55,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43" (2/3) ... [2023-11-19 07:59:55,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bb8e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:55, skipping insertion in model container [2023-11-19 07:59:55,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:55" (3/3) ... [2023-11-19 07:59:55,041 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.06.cil-2.c [2023-11-19 07:59:55,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:55,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:59:55,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:55,171 INFO L357 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, mHoare=true, 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;@8aab494, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>] [2023-11-19 07:59:55,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:59:55,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 2422 states, 2393 states have (on average 1.8487254492269118) internal successors, (4424), 2396 states have internal predecessors, (4424), 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) [2023-11-19 07:59:55,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 07:59:55,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:55,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:55,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:55,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:55,222 INFO L85 PathProgramCache]: Analyzing trace with hash -603322071, now seen corresponding path program 1 times [2023-11-19 07:59:55,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:55,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087775717] [2023-11-19 07:59:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:55,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:55,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:59:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:55,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:59:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:55,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:59:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 07:59:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:55,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 07:59:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:55,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:55,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087775717] [2023-11-19 07:59:55,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087775717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:55,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:55,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:55,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246825517] [2023-11-19 07:59:55,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:55,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:55,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:55,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:55,952 INFO L87 Difference]: Start difference. First operand has 2422 states, 2393 states have (on average 1.8487254492269118) internal successors, (4424), 2396 states have internal predecessors, (4424), 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 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-19 07:59:57,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:57,551 INFO L93 Difference]: Finished difference Result 4910 states and 9040 transitions. [2023-11-19 07:59:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:57,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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 112 [2023-11-19 07:59:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:57,584 INFO L225 Difference]: With dead ends: 4910 [2023-11-19 07:59:57,585 INFO L226 Difference]: Without dead ends: 2431 [2023-11-19 07:59:57,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:57,598 INFO L413 NwaCegarLoop]: 4245 mSDtfsCounter, 595 mSDsluCounter, 12323 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 16568 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:57,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 16568 Invalid, 615 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [44 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:59:57,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2023-11-19 07:59:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2355. [2023-11-19 07:59:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2327 states have (on average 1.8362698753760207) internal successors, (4273), 2329 states have internal predecessors, (4273), 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) [2023-11-19 07:59:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4313 transitions. [2023-11-19 07:59:57,755 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4313 transitions. Word has length 112 [2023-11-19 07:59:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:57,756 INFO L495 AbstractCegarLoop]: Abstraction has 2355 states and 4313 transitions. [2023-11-19 07:59:57,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-19 07:59:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4313 transitions. [2023-11-19 07:59:57,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 07:59:57,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:57,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:57,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:59:57,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:57,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1634362969, now seen corresponding path program 1 times [2023-11-19 07:59:57,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:57,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153056709] [2023-11-19 07:59:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:57,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:59:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:58,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:59:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:58,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 07:59:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 07:59:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:58,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 07:59:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:58,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:58,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153056709] [2023-11-19 07:59:58,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153056709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:58,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:58,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:59:58,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931287458] [2023-11-19 07:59:58,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:58,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:58,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:58,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:58,229 INFO L87 Difference]: Start difference. First operand 2355 states and 4313 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2023-11-19 08:00:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:01,286 INFO L93 Difference]: Finished difference Result 2966 states and 5283 transitions. [2023-11-19 08:00:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:00:01,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2023-11-19 08:00:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:01,307 INFO L225 Difference]: With dead ends: 2966 [2023-11-19 08:00:01,308 INFO L226 Difference]: Without dead ends: 2746 [2023-11-19 08:00:01,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:00:01,312 INFO L413 NwaCegarLoop]: 4308 mSDtfsCounter, 4796 mSDsluCounter, 17001 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 21309 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:01,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 21309 Invalid, 2137 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 2083 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 08:00:01,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2023-11-19 08:00:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2585. [2023-11-19 08:00:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2532 states have (on average 1.8131911532385465) internal successors, (4591), 2536 states have internal predecessors, (4591), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2023-11-19 08:00:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 4672 transitions. [2023-11-19 08:00:01,414 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 4672 transitions. Word has length 112 [2023-11-19 08:00:01,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:01,415 INFO L495 AbstractCegarLoop]: Abstraction has 2585 states and 4672 transitions. [2023-11-19 08:00:01,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2023-11-19 08:00:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 4672 transitions. [2023-11-19 08:00:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 08:00:01,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:01,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:01,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:00:01,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:01,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1041629413, now seen corresponding path program 1 times [2023-11-19 08:00:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:01,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533360659] [2023-11-19 08:00:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:01,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 08:00:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 08:00:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 08:00:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:01,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 08:00:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:01,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 08:00:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:01,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:01,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:01,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533360659] [2023-11-19 08:00:01,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533360659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:01,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:01,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:01,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770213817] [2023-11-19 08:00:01,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:01,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:01,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:01,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:01,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:01,792 INFO L87 Difference]: Start difference. First operand 2585 states and 4672 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2023-11-19 08:00:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:04,592 INFO L93 Difference]: Finished difference Result 3746 states and 6496 transitions. [2023-11-19 08:00:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:00:04,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2023-11-19 08:00:04,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:04,616 INFO L225 Difference]: With dead ends: 3746 [2023-11-19 08:00:04,616 INFO L226 Difference]: Without dead ends: 3298 [2023-11-19 08:00:04,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:00:04,628 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4821 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4834 SdHoareTripleChecker+Valid, 21204 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:04,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4834 Valid, 21204 Invalid, 1946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 08:00:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2023-11-19 08:00:04,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 3009. [2023-11-19 08:00:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 2912 states have (on average 1.7747252747252746) internal successors, (5168), 2918 states have internal predecessors, (5168), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-19 08:00:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 5319 transitions. [2023-11-19 08:00:04,772 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 5319 transitions. Word has length 112 [2023-11-19 08:00:04,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:04,773 INFO L495 AbstractCegarLoop]: Abstraction has 3009 states and 5319 transitions. [2023-11-19 08:00:04,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2023-11-19 08:00:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 5319 transitions. [2023-11-19 08:00:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 08:00:04,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:04,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:04,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:00:04,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:04,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash 158120423, now seen corresponding path program 1 times [2023-11-19 08:00:04,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:04,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772845557] [2023-11-19 08:00:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:04,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 08:00:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:04,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 08:00:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 08:00:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 08:00:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 08:00:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:05,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:05,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772845557] [2023-11-19 08:00:05,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772845557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:05,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:05,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:05,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001594415] [2023-11-19 08:00:05,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:05,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:05,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:05,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:05,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:05,048 INFO L87 Difference]: Start difference. First operand 3009 states and 5319 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2023-11-19 08:00:07,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:07,893 INFO L93 Difference]: Finished difference Result 5272 states and 8863 transitions. [2023-11-19 08:00:07,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:00:07,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2023-11-19 08:00:07,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:07,924 INFO L225 Difference]: With dead ends: 5272 [2023-11-19 08:00:07,924 INFO L226 Difference]: Without dead ends: 4400 [2023-11-19 08:00:07,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:00:07,937 INFO L413 NwaCegarLoop]: 4304 mSDtfsCounter, 4796 mSDsluCounter, 17001 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 21305 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:07,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 21305 Invalid, 2124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 08:00:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2023-11-19 08:00:08,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 3859. [2023-11-19 08:00:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3859 states, 3674 states have (on average 1.7212847033206315) internal successors, (6324), 3684 states have internal predecessors, (6324), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2023-11-19 08:00:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3859 states to 3859 states and 6621 transitions. [2023-11-19 08:00:08,151 INFO L78 Accepts]: Start accepts. Automaton has 3859 states and 6621 transitions. Word has length 112 [2023-11-19 08:00:08,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:08,152 INFO L495 AbstractCegarLoop]: Abstraction has 3859 states and 6621 transitions. [2023-11-19 08:00:08,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2023-11-19 08:00:08,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states and 6621 transitions. [2023-11-19 08:00:08,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 08:00:08,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:08,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:08,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:08,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:08,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:08,157 INFO L85 PathProgramCache]: Analyzing trace with hash 129620133, now seen corresponding path program 1 times [2023-11-19 08:00:08,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:08,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155565791] [2023-11-19 08:00:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:08,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 08:00:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 08:00:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 08:00:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 08:00:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 08:00:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:08,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:08,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155565791] [2023-11-19 08:00:08,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155565791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:08,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:08,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:08,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9152993] [2023-11-19 08:00:08,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:08,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:08,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:08,524 INFO L87 Difference]: Start difference. First operand 3859 states and 6621 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2023-11-19 08:00:11,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:11,408 INFO L93 Difference]: Finished difference Result 8322 states and 13611 transitions. [2023-11-19 08:00:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:00:11,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2023-11-19 08:00:11,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:11,462 INFO L225 Difference]: With dead ends: 8322 [2023-11-19 08:00:11,462 INFO L226 Difference]: Without dead ends: 6600 [2023-11-19 08:00:11,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:00:11,473 INFO L413 NwaCegarLoop]: 4305 mSDtfsCounter, 4796 mSDsluCounter, 17001 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 21306 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:11,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 21306 Invalid, 2120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 08:00:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6600 states. [2023-11-19 08:00:11,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6600 to 5565. [2023-11-19 08:00:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5565 states, 5204 states have (on average 1.6610299769408148) internal successors, (8644), 5222 states have internal predecessors, (8644), 247 states have call successors, (247), 96 states have call predecessors, (247), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2023-11-19 08:00:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 9251 transitions. [2023-11-19 08:00:11,847 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 9251 transitions. Word has length 112 [2023-11-19 08:00:11,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:11,847 INFO L495 AbstractCegarLoop]: Abstraction has 5565 states and 9251 transitions. [2023-11-19 08:00:11,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2023-11-19 08:00:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 9251 transitions. [2023-11-19 08:00:11,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 08:00:11,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:11,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:11,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:00:11,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:11,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:11,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1810961881, now seen corresponding path program 1 times [2023-11-19 08:00:11,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:11,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306001358] [2023-11-19 08:00:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:11,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 08:00:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 08:00:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:12,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 08:00:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:12,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 08:00:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 08:00:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:12,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:12,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306001358] [2023-11-19 08:00:12,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306001358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:12,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:12,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:12,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090103501] [2023-11-19 08:00:12,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:12,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:12,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:12,160 INFO L87 Difference]: Start difference. First operand 5565 states and 9251 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2023-11-19 08:00:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:15,115 INFO L93 Difference]: Finished difference Result 14420 states and 23163 transitions. [2023-11-19 08:00:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:00:15,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2023-11-19 08:00:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:15,199 INFO L225 Difference]: With dead ends: 14420 [2023-11-19 08:00:15,200 INFO L226 Difference]: Without dead ends: 10992 [2023-11-19 08:00:15,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:00:15,217 INFO L413 NwaCegarLoop]: 4304 mSDtfsCounter, 4796 mSDsluCounter, 17001 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 21305 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:15,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 21305 Invalid, 2106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 08:00:15,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2023-11-19 08:00:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 8991. [2023-11-19 08:00:15,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8991 states, 8278 states have (on average 1.6071514858661513) internal successors, (13304), 8312 states have internal predecessors, (13304), 487 states have call successors, (487), 192 states have call predecessors, (487), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2023-11-19 08:00:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8991 states to 8991 states and 14585 transitions. [2023-11-19 08:00:15,855 INFO L78 Accepts]: Start accepts. Automaton has 8991 states and 14585 transitions. Word has length 112 [2023-11-19 08:00:15,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:15,856 INFO L495 AbstractCegarLoop]: Abstraction has 8991 states and 14585 transitions. [2023-11-19 08:00:15,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2023-11-19 08:00:15,856 INFO L276 IsEmpty]: Start isEmpty. Operand 8991 states and 14585 transitions. [2023-11-19 08:00:15,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 08:00:15,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:15,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:15,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:00:15,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:15,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:15,866 INFO L85 PathProgramCache]: Analyzing trace with hash 66101349, now seen corresponding path program 1 times [2023-11-19 08:00:15,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:15,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125055821] [2023-11-19 08:00:15,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:15,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 08:00:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 08:00:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 08:00:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-19 08:00:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-19 08:00:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:16,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:16,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125055821] [2023-11-19 08:00:16,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125055821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:16,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:16,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:16,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758863686] [2023-11-19 08:00:16,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:16,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:16,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:16,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:16,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:16,091 INFO L87 Difference]: Start difference. First operand 8991 states and 14585 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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)