./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI --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 79f20a4b12634e812af836a5fe92e9d987e7766e2c28337c49504608346f2347 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:55:53,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:55:54,067 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:55:54,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:55:54,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:55:54,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:55:54,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:55:54,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:55:54,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:55:54,104 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:55:54,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:55:54,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:55:54,106 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:55:54,107 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:55:54,108 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:55:54,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:55:54,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:55:54,110 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:55:54,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:55:54,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:55:54,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:55:54,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:55:54,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:55:54,114 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:55:54,114 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:55:54,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:55:54,115 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:55:54,116 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:55:54,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:55:54,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:55:54,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:55:54,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:55:54,120 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:55:54,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:55:54,121 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:55:54,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:55:54,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:55:54,123 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:55:54,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:55:54,124 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:55:54,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:55:54,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:55:54,125 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_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79f20a4b12634e812af836a5fe92e9d987e7766e2c28337c49504608346f2347 [2023-11-24 21:55:54,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:55:54,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:55:54,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:55:54,449 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:55:54,450 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:55:54,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c [2023-11-24 21:55:57,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:55:57,977 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:55:57,978 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/sv-benchmarks/c/systemc/token_ring.11.cil-1.c [2023-11-24 21:55:58,000 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/data/1bb77b1a4/033bfe6ea70f4313a1a7132f47b45d21/FLAG124f3855e [2023-11-24 21:55:58,017 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/data/1bb77b1a4/033bfe6ea70f4313a1a7132f47b45d21 [2023-11-24 21:55:58,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:55:58,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:55:58,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:55:58,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:55:58,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:55:58,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c7559a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58, skipping insertion in model container [2023-11-24 21:55:58,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,105 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:55:58,278 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_fec0d86d-00c4-48e4-9be8-3e4615087909/sv-benchmarks/c/systemc/token_ring.11.cil-1.c[671,684] [2023-11-24 21:55:58,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:55:58,510 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:55:58,532 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_fec0d86d-00c4-48e4-9be8-3e4615087909/sv-benchmarks/c/systemc/token_ring.11.cil-1.c[671,684] [2023-11-24 21:55:58,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:55:58,713 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:55:58,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58 WrapperNode [2023-11-24 21:55:58,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:55:58,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:55:58,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:55:58,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:55:58,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,765 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,837 INFO L138 Inliner]: procedures = 50, calls = 65, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 825 [2023-11-24 21:55:58,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:55:58,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:55:58,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:55:58,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:55:58,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,860 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,899 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]. [2023-11-24 21:55:58,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:58,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:55:58,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:55:58,998 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:55:58,998 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:55:58,999 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (1/1) ... [2023-11-24 21:55:59,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:55:59,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:55:59,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:55:59,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec0d86d-00c4-48e4-9be8-3e4615087909/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:55:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:55:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 21:55:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 21:55:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 21:55:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 21:55:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 21:55:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 21:55:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-24 21:55:59,104 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-24 21:55:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 21:55:59,104 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 21:55:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 21:55:59,105 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 21:55:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 21:55:59,105 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 21:55:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:55:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:55:59,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:55:59,311 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:55:59,317 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:56:00,476 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:56:00,554 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:56:00,554 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-24 21:56:00,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:56:00 BoogieIcfgContainer [2023-11-24 21:56:00,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:56:00,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:56:00,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:56:00,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:56:00,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:55:58" (1/3) ... [2023-11-24 21:56:00,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f39a6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:56:00, skipping insertion in model container [2023-11-24 21:56:00,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:58" (2/3) ... [2023-11-24 21:56:00,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f39a6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:56:00, skipping insertion in model container [2023-11-24 21:56:00,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:56:00" (3/3) ... [2023-11-24 21:56:00,569 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.11.cil-1.c [2023-11-24 21:56:00,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:56:00,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:56:00,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:56:00,712 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;@738843d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:56:00,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:56:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 297 states have (on average 1.7373737373737375) internal successors, (516), 301 states have internal predecessors, (516), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-24 21:56:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:56:00,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:00,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:00,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:56:00,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:00,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1682378618, now seen corresponding path program 1 times [2023-11-24 21:56:00,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:00,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401778065] [2023-11-24 21:56:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:00,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:01,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:56:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:01,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:56:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:01,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:56:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:56:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:01,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-24 21:56:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:01,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:01,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401778065] [2023-11-24 21:56:01,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401778065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:01,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:01,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:56:01,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012991545] [2023-11-24 21:56:01,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:01,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:56:01,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:01,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:56:01,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:56:01,876 INFO L87 Difference]: Start difference. First operand has 333 states, 297 states have (on average 1.7373737373737375) internal successors, (516), 301 states have internal predecessors, (516), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:04,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:04,779 INFO L93 Difference]: Finished difference Result 779 states and 1345 transitions. [2023-11-24 21:56:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:56:04,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-24 21:56:04,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:04,804 INFO L225 Difference]: With dead ends: 779 [2023-11-24 21:56:04,804 INFO L226 Difference]: Without dead ends: 450 [2023-11-24 21:56:04,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:56:04,816 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 920 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:04,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 613 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-24 21:56:04,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-11-24 21:56:04,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 330. [2023-11-24 21:56:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 296 states have (on average 1.635135135135135) internal successors, (484), 298 states have internal predecessors, (484), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 21:56:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 536 transitions. [2023-11-24 21:56:05,009 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 536 transitions. Word has length 151 [2023-11-24 21:56:05,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:05,012 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 536 transitions. [2023-11-24 21:56:05,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:05,013 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 536 transitions. [2023-11-24 21:56:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:56:05,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:05,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:05,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:56:05,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:56:05,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:05,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2020666168, now seen corresponding path program 1 times [2023-11-24 21:56:05,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:05,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185878837] [2023-11-24 21:56:05,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:05,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:56:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:05,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:56:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:56:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:05,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:56:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:05,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-24 21:56:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:05,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:05,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185878837] [2023-11-24 21:56:05,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185878837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:05,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:05,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:56:05,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854719321] [2023-11-24 21:56:05,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:05,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:56:05,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:05,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:56:05,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:56:05,551 INFO L87 Difference]: Start difference. First operand 330 states and 536 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:09,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:09,306 INFO L93 Difference]: Finished difference Result 802 states and 1334 transitions. [2023-11-24 21:56:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:56:09,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-24 21:56:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:09,317 INFO L225 Difference]: With dead ends: 802 [2023-11-24 21:56:09,318 INFO L226 Difference]: Without dead ends: 486 [2023-11-24 21:56:09,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:56:09,327 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1054 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:09,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1098 Invalid, 1999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-24 21:56:09,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-24 21:56:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 332. [2023-11-24 21:56:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 298 states have (on average 1.6275167785234899) internal successors, (485), 300 states have internal predecessors, (485), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 21:56:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 537 transitions. [2023-11-24 21:56:09,439 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 537 transitions. Word has length 151 [2023-11-24 21:56:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:09,441 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 537 transitions. [2023-11-24 21:56:09,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 537 transitions. [2023-11-24 21:56:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:56:09,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:09,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:09,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:56:09,458 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:56:09,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:09,459 INFO L85 PathProgramCache]: Analyzing trace with hash 889061772, now seen corresponding path program 1 times [2023-11-24 21:56:09,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:09,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806256608] [2023-11-24 21:56:09,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:56:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:09,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:56:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:09,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:56:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:09,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:56:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:09,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-24 21:56:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:09,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:09,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806256608] [2023-11-24 21:56:09,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806256608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:09,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:09,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:56:09,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699931452] [2023-11-24 21:56:09,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:09,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:56:09,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:09,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:56:09,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:56:09,958 INFO L87 Difference]: Start difference. First operand 332 states and 537 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 6 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:15,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:15,760 INFO L93 Difference]: Finished difference Result 1247 states and 2089 transitions. [2023-11-24 21:56:15,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 21:56:15,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 6 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-24 21:56:15,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:15,769 INFO L225 Difference]: With dead ends: 1247 [2023-11-24 21:56:15,769 INFO L226 Difference]: Without dead ends: 932 [2023-11-24 21:56:15,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-11-24 21:56:15,773 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1445 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 3215 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:15,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 1527 Invalid, 3332 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 3215 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-24 21:56:15,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-11-24 21:56:15,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 667. [2023-11-24 21:56:15,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 606 states have (on average 1.6336633663366336) internal successors, (990), 609 states have internal predecessors, (990), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2023-11-24 21:56:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1085 transitions. [2023-11-24 21:56:15,867 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1085 transitions. Word has length 151 [2023-11-24 21:56:15,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:15,867 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1085 transitions. [2023-11-24 21:56:15,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 6 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1085 transitions. [2023-11-24 21:56:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:56:15,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:15,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:15,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:56:15,871 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:56:15,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -602558454, now seen corresponding path program 1 times [2023-11-24 21:56:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:15,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241147047] [2023-11-24 21:56:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:15,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:16,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:56:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:56:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:56:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:16,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:56:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:16,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-24 21:56:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:16,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:16,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241147047] [2023-11-24 21:56:16,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241147047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:16,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:16,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:56:16,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680449630] [2023-11-24 21:56:16,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:16,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:56:16,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:56:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:56:16,245 INFO L87 Difference]: Start difference. First operand 667 states and 1085 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:21,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:21,618 INFO L93 Difference]: Finished difference Result 2040 states and 3365 transitions. [2023-11-24 21:56:21,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:56:21,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-24 21:56:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:21,632 INFO L225 Difference]: With dead ends: 2040 [2023-11-24 21:56:21,632 INFO L226 Difference]: Without dead ends: 1390 [2023-11-24 21:56:21,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:56:21,646 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1412 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 3470 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 3533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:21,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 1962 Invalid, 3533 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3470 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-24 21:56:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2023-11-24 21:56:21,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 975. [2023-11-24 21:56:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 887 states have (on average 1.6268320180383316) internal successors, (1443), 891 states have internal predecessors, (1443), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-11-24 21:56:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1580 transitions. [2023-11-24 21:56:21,742 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1580 transitions. Word has length 151 [2023-11-24 21:56:21,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:21,743 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1580 transitions. [2023-11-24 21:56:21,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1580 transitions. [2023-11-24 21:56:21,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:56:21,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:21,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:21,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:56:21,746 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:56:21,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:21,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1147431028, now seen corresponding path program 1 times [2023-11-24 21:56:21,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:21,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833671593] [2023-11-24 21:56:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:21,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:56:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:21,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:56:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:22,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:56:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:56:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:22,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-24 21:56:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:22,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:22,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833671593] [2023-11-24 21:56:22,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833671593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:22,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:22,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:56:22,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443196431] [2023-11-24 21:56:22,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:22,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:56:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:22,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:56:22,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:56:22,109 INFO L87 Difference]: Start difference. First operand 975 states and 1580 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:27,215 INFO L93 Difference]: Finished difference Result 3225 states and 5310 transitions. [2023-11-24 21:56:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:56:27,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-24 21:56:27,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:27,233 INFO L225 Difference]: With dead ends: 3225 [2023-11-24 21:56:27,233 INFO L226 Difference]: Without dead ends: 2267 [2023-11-24 21:56:27,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:56:27,238 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1410 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 3531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:27,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 1960 Invalid, 3531 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3466 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-24 21:56:27,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2023-11-24 21:56:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1592. [2023-11-24 21:56:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1450 states have (on average 1.6206896551724137) internal successors, (2350), 1456 states have internal predecessors, (2350), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-11-24 21:56:27,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2575 transitions. [2023-11-24 21:56:27,356 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2575 transitions. Word has length 151 [2023-11-24 21:56:27,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:27,356 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2575 transitions. [2023-11-24 21:56:27,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:27,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2575 transitions. [2023-11-24 21:56:27,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:56:27,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:27,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:27,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:56:27,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:56:27,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:27,361 INFO L85 PathProgramCache]: Analyzing trace with hash -472270902, now seen corresponding path program 1 times [2023-11-24 21:56:27,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:27,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353970198] [2023-11-24 21:56:27,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:27,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:27,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:56:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:27,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:56:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:56:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:56:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-24 21:56:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:27,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:27,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353970198] [2023-11-24 21:56:27,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353970198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:27,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:27,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:56:27,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479735647] [2023-11-24 21:56:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:27,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:56:27,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:27,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:56:27,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:56:27,729 INFO L87 Difference]: Start difference. First operand 1592 states and 2575 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:30,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:30,052 INFO L93 Difference]: Finished difference Result 3830 states and 6296 transitions. [2023-11-24 21:56:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:56:30,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-24 21:56:30,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:30,070 INFO L225 Difference]: With dead ends: 3830 [2023-11-24 21:56:30,070 INFO L226 Difference]: Without dead ends: 2255 [2023-11-24 21:56:30,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:56:30,077 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1155 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:30,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 840 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-24 21:56:30,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2023-11-24 21:56:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 1592. [2023-11-24 21:56:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1450 states have (on average 1.6172413793103448) internal successors, (2345), 1456 states have internal predecessors, (2345), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-11-24 21:56:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2570 transitions. [2023-11-24 21:56:30,214 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2570 transitions. Word has length 151 [2023-11-24 21:56:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:30,215 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2570 transitions. [2023-11-24 21:56:30,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2570 transitions. [2023-11-24 21:56:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:56:30,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:30,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:30,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:56:30,219 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:56:30,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1420322868, now seen corresponding path program 1 times [2023-11-24 21:56:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:30,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450609375] [2023-11-24 21:56:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:56:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:30,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:56:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:56:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:56:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-24 21:56:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:30,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:30,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:30,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450609375] [2023-11-24 21:56:30,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450609375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:30,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:30,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:56:30,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096140249] [2023-11-24 21:56:30,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:30,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:56:30,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:30,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:56:30,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:56:30,570 INFO L87 Difference]: Start difference. First operand 1592 states and 2570 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:32,802 INFO L93 Difference]: Finished difference Result 3824 states and 6270 transitions. [2023-11-24 21:56:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:56:32,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-24 21:56:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:32,818 INFO L225 Difference]: With dead ends: 3824 [2023-11-24 21:56:32,818 INFO L226 Difference]: Without dead ends: 2249 [2023-11-24 21:56:32,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:56:32,825 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1153 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:32,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 840 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-24 21:56:32,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2023-11-24 21:56:32,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1592. [2023-11-24 21:56:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1450 states have (on average 1.6137931034482758) internal successors, (2340), 1456 states have internal predecessors, (2340), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-11-24 21:56:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2565 transitions. [2023-11-24 21:56:32,975 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2565 transitions. Word has length 151 [2023-11-24 21:56:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:32,977 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2565 transitions. [2023-11-24 21:56:32,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2565 transitions. [2023-11-24 21:56:32,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:56:32,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:32,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:32,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:56:32,982 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:56:32,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2005094518, now seen corresponding path program 1 times [2023-11-24 21:56:32,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:32,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325038794] [2023-11-24 21:56:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:32,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:33,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:56:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:33,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:56:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:33,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:56:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:33,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:56:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:33,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-24 21:56:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:33,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:33,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325038794] [2023-11-24 21:56:33,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325038794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:33,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:33,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:56:33,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371459028] [2023-11-24 21:56:33,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:33,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:56:33,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:33,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:56:33,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:56:33,314 INFO L87 Difference]: Start difference. First operand 1592 states and 2565 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:35,481 INFO L93 Difference]: Finished difference Result 3817 states and 6242 transitions. [2023-11-24 21:56:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:56:35,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-24 21:56:35,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:35,499 INFO L225 Difference]: With dead ends: 3817 [2023-11-24 21:56:35,499 INFO L226 Difference]: Without dead ends: 2242 [2023-11-24 21:56:35,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:56:35,506 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1157 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:35,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 840 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-24 21:56:35,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2023-11-24 21:56:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1592. [2023-11-24 21:56:35,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1450 states have (on average 1.610344827586207) internal successors, (2335), 1456 states have internal predecessors, (2335), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-11-24 21:56:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2560 transitions. [2023-11-24 21:56:35,619 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2560 transitions. Word has length 151 [2023-11-24 21:56:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:35,619 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2560 transitions. [2023-11-24 21:56:35,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2560 transitions. [2023-11-24 21:56:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:56:35,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:35,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:35,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:56:35,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:56:35,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:35,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1855367180, now seen corresponding path program 1 times [2023-11-24 21:56:35,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:35,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007343908] [2023-11-24 21:56:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:35,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:35,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:56:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:35,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:56:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:56:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:35,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:56:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-24 21:56:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:35,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:35,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007343908] [2023-11-24 21:56:35,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007343908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:35,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:35,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:56:35,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797549560] [2023-11-24 21:56:35,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:35,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:56:35,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:35,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:56:35,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:56:35,947 INFO L87 Difference]: Start difference. First operand 1592 states and 2560 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:38,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:38,452 INFO L93 Difference]: Finished difference Result 3805 states and 6204 transitions. [2023-11-24 21:56:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:56:38,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-24 21:56:38,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:38,469 INFO L225 Difference]: With dead ends: 3805 [2023-11-24 21:56:38,469 INFO L226 Difference]: Without dead ends: 2230 [2023-11-24 21:56:38,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:56:38,476 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1011 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:38,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1000 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-24 21:56:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2023-11-24 21:56:38,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 1592. [2023-11-24 21:56:38,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1450 states have (on average 1.606896551724138) internal successors, (2330), 1456 states have internal predecessors, (2330), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-11-24 21:56:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2555 transitions. [2023-11-24 21:56:38,598 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2555 transitions. Word has length 151 [2023-11-24 21:56:38,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:38,598 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2555 transitions. [2023-11-24 21:56:38,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2555 transitions. [2023-11-24 21:56:38,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:56:38,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:38,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:38,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:56:38,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:56:38,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1148770574, now seen corresponding path program 1 times [2023-11-24 21:56:38,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:38,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210442323] [2023-11-24 21:56:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:38,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:56:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:38,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:56:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:38,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:56:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:56:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:38,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-24 21:56:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:38,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:38,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210442323] [2023-11-24 21:56:38,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210442323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:38,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:38,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:56:38,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123513] [2023-11-24 21:56:38,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:38,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:56:38,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:38,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:56:38,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:56:38,942 INFO L87 Difference]: Start difference. First operand 1592 states and 2555 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:56:43,815 INFO L93 Difference]: Finished difference Result 5465 states and 8867 transitions. [2023-11-24 21:56:43,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:56:43,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-24 21:56:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:56:43,837 INFO L225 Difference]: With dead ends: 5465 [2023-11-24 21:56:43,838 INFO L226 Difference]: Without dead ends: 3890 [2023-11-24 21:56:43,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:56:43,843 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1381 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 3336 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 3401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:56:43,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 1960 Invalid, 3401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3336 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-24 21:56:43,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2023-11-24 21:56:44,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 2849. [2023-11-24 21:56:44,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2849 states, 2599 states have (on average 1.6002308580223163) internal successors, (4159), 2609 states have internal predecessors, (4159), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2023-11-24 21:56:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 4566 transitions. [2023-11-24 21:56:44,048 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 4566 transitions. Word has length 151 [2023-11-24 21:56:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:56:44,049 INFO L495 AbstractCegarLoop]: Abstraction has 2849 states and 4566 transitions. [2023-11-24 21:56:44,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:56:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 4566 transitions. [2023-11-24 21:56:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:56:44,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:44,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:56:44,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:56:44,053 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:56:44,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:44,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2095808460, now seen corresponding path program 1 times [2023-11-24 21:56:44,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:44,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789299490] [2023-11-24 21:56:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:44,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:56:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:56:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:56:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:44,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:56:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-24 21:56:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:56:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:56:44,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:56:44,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789299490] [2023-11-24 21:56:44,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789299490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:56:44,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:56:44,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:56:44,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075761083] [2023-11-24 21:56:44,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:56:44,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:56:44,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:56:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:56:44,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:56:44,368 INFO L87 Difference]: Start difference. First operand 2849 states and 4566 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)