./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/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_fc55359a-3007-46b4-86d7-86be0abeb8e1/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/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_fc55359a-3007-46b4-86d7-86be0abeb8e1/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 2c24bc45cf56e090de9596945e0f5e2694e330a653ff2d4e505361654a060374 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:28:45,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:28:45,299 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:28:45,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:28:45,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:28:45,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:28:45,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:28:45,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:28:45,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:28:45,359 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:28:45,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:28:45,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:28:45,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:28:45,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:28:45,365 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:28:45,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:28:45,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:28:45,367 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:28:45,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:28:45,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:28:45,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:28:45,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:28:45,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:28:45,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:28:45,372 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:28:45,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:28:45,372 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:28:45,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:28:45,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:28:45,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:28:45,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:28:45,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:45,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:28:45,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:28:45,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:28:45,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:28:45,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:28:45,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:28:45,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:28:45,378 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:28:45,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:28:45,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:28:45,379 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_fc55359a-3007-46b4-86d7-86be0abeb8e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c24bc45cf56e090de9596945e0f5e2694e330a653ff2d4e505361654a060374 [2023-11-24 21:28:45,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:28:45,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:28:45,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:28:45,795 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:28:45,796 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:28:45,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c [2023-11-24 21:28:48,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:28:49,727 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:28:49,728 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c [2023-11-24 21:28:49,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/bin/uautomizer-verify-NlZe1sFDwI/data/57b224901/49e54a5fdd9b4f6f94449d03159ea8a5/FLAG0e406fccb [2023-11-24 21:28:49,829 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/bin/uautomizer-verify-NlZe1sFDwI/data/57b224901/49e54a5fdd9b4f6f94449d03159ea8a5 [2023-11-24 21:28:49,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:28:49,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:28:49,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:49,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:28:49,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:28:49,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:49" (1/1) ... [2023-11-24 21:28:49,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b784b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:49, skipping insertion in model container [2023-11-24 21:28:49,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:49" (1/1) ... [2023-11-24 21:28:50,115 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:28:52,596 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_fc55359a-3007-46b4-86d7-86be0abeb8e1/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c[380323,380336] [2023-11-24 21:28:52,623 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_fc55359a-3007-46b4-86d7-86be0abeb8e1/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c[383339,383352] [2023-11-24 21:28:53,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:53,035 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:28:54,303 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_fc55359a-3007-46b4-86d7-86be0abeb8e1/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c[380323,380336] [2023-11-24 21:28:54,311 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_fc55359a-3007-46b4-86d7-86be0abeb8e1/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-2.c[383339,383352] [2023-11-24 21:28:54,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:54,494 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:28:54,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54 WrapperNode [2023-11-24 21:28:54,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:54,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:54,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:28:54,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:28:54,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:54,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:55,093 INFO L138 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13228 [2023-11-24 21:28:55,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:55,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:28:55,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:28:55,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:28:55,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:55,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:55,232 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:55,350 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 21:28:55,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:55,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:55,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:55,592 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:55,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:55,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:55,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:28:55,701 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:28:55,701 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:28:55,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:28:55,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (1/1) ... [2023-11-24 21:28:55,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:55,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:55,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:28:55,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc55359a-3007-46b4-86d7-86be0abeb8e1/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:28:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 21:28:55,783 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 21:28:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 21:28:55,783 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 21:28:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 21:28:55,783 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 21:28:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 21:28:55,784 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 21:28:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 21:28:55,784 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 21:28:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 21:28:55,785 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 21:28:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:28:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:28:55,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:28:55,934 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:28:55,937 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:29:06,087 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:29:06,208 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:29:06,209 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-24 21:29:06,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:29:06 BoogieIcfgContainer [2023-11-24 21:29:06,211 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:29:06,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:29:06,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:29:06,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:29:06,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:28:49" (1/3) ... [2023-11-24 21:29:06,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1988a47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:29:06, skipping insertion in model container [2023-11-24 21:29:06,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:54" (2/3) ... [2023-11-24 21:29:06,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1988a47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:29:06, skipping insertion in model container [2023-11-24 21:29:06,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:29:06" (3/3) ... [2023-11-24 21:29:06,221 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.12.cil-2.c [2023-11-24 21:29:06,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:29:06,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:29:06,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:29:06,363 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;@58793980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:29:06,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 21:29:06,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 2471 states, 2436 states have (on average 1.875615763546798) internal successors, (4569), 2439 states have internal predecessors, (4569), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-24 21:29:06,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-24 21:29:06,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:06,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:06,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:29:06,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash -421080362, now seen corresponding path program 1 times [2023-11-24 21:29:06,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:06,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583998373] [2023-11-24 21:29:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:06,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:29:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:07,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-24 21:29:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-24 21:29:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-24 21:29:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-24 21:29:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:07,218 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 21:29:07,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583998373] [2023-11-24 21:29:07,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583998373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:07,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:07,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:29:07,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891246755] [2023-11-24 21:29:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:07,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:29:07,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:07,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:29:07,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:29:07,286 INFO L87 Difference]: Start difference. First operand has 2471 states, 2436 states have (on average 1.875615763546798) internal successors, (4569), 2439 states have internal predecessors, (4569), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:10,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:10,590 INFO L93 Difference]: Finished difference Result 5068 states and 9466 transitions. [2023-11-24 21:29:10,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:29:10,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-24 21:29:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:10,627 INFO L225 Difference]: With dead ends: 5068 [2023-11-24 21:29:10,627 INFO L226 Difference]: Without dead ends: 2597 [2023-11-24 21:29:10,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:29:10,640 INFO L413 NwaCegarLoop]: 4257 mSDtfsCounter, 979 mSDsluCounter, 12204 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 16461 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:10,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 16461 Invalid, 1126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-24 21:29:10,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2023-11-24 21:29:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2467. [2023-11-24 21:29:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2433 states have (on average 1.8368269625976161) internal successors, (4469), 2435 states have internal predecessors, (4469), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-24 21:29:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4521 transitions. [2023-11-24 21:29:10,801 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4521 transitions. Word has length 161 [2023-11-24 21:29:10,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:10,802 INFO L495 AbstractCegarLoop]: Abstraction has 2467 states and 4521 transitions. [2023-11-24 21:29:10,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4521 transitions. [2023-11-24 21:29:10,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-24 21:29:10,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:10,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:10,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:29:10,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:29:10,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash 190188696, now seen corresponding path program 1 times [2023-11-24 21:29:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:10,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418540551] [2023-11-24 21:29:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:10,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:29:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-24 21:29:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:11,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-24 21:29:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:11,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-24 21:29:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:11,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-24 21:29:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:11,153 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 21:29:11,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:11,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418540551] [2023-11-24 21:29:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418540551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:11,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:11,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:29:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705940213] [2023-11-24 21:29:11,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:11,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:29:11,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:11,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:29:11,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:29:11,158 INFO L87 Difference]: Start difference. First operand 2467 states and 4521 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:13,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:13,906 INFO L93 Difference]: Finished difference Result 2930 states and 5294 transitions. [2023-11-24 21:29:13,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:29:13,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-24 21:29:13,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:13,930 INFO L225 Difference]: With dead ends: 2930 [2023-11-24 21:29:13,930 INFO L226 Difference]: Without dead ends: 2597 [2023-11-24 21:29:13,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:29:13,935 INFO L413 NwaCegarLoop]: 4253 mSDtfsCounter, 967 mSDsluCounter, 12195 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 16448 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:13,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 16448 Invalid, 1115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-24 21:29:13,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2023-11-24 21:29:14,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2467. [2023-11-24 21:29:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2433 states have (on average 1.8364159473900534) internal successors, (4468), 2435 states have internal predecessors, (4468), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-24 21:29:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4520 transitions. [2023-11-24 21:29:14,030 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4520 transitions. Word has length 161 [2023-11-24 21:29:14,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:14,031 INFO L495 AbstractCegarLoop]: Abstraction has 2467 states and 4520 transitions. [2023-11-24 21:29:14,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:14,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4520 transitions. [2023-11-24 21:29:14,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-24 21:29:14,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:14,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:14,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:29:14,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:29:14,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1513367642, now seen corresponding path program 1 times [2023-11-24 21:29:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:14,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759935247] [2023-11-24 21:29:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:14,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:14,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:29:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-24 21:29:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-24 21:29:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:14,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-24 21:29:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-24 21:29:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:14,469 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 21:29:14,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:14,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759935247] [2023-11-24 21:29:14,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759935247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:14,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:14,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:29:14,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035186437] [2023-11-24 21:29:14,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:14,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:29:14,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:29:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:29:14,472 INFO L87 Difference]: Start difference. First operand 2467 states and 4520 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:19,221 INFO L93 Difference]: Finished difference Result 3402 states and 6086 transitions. [2023-11-24 21:29:19,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:29:19,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-24 21:29:19,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:19,243 INFO L225 Difference]: With dead ends: 3402 [2023-11-24 21:29:19,244 INFO L226 Difference]: Without dead ends: 3074 [2023-11-24 21:29:19,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:29:19,247 INFO L413 NwaCegarLoop]: 4221 mSDtfsCounter, 5433 mSDsluCounter, 12655 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5452 SdHoareTripleChecker+Valid, 16876 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:19,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5452 Valid, 16876 Invalid, 2405 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-24 21:29:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2023-11-24 21:29:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 2815. [2023-11-24 21:29:19,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2753 states have (on average 1.8147475481293134) internal successors, (4996), 2756 states have internal predecessors, (4996), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-11-24 21:29:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 5093 transitions. [2023-11-24 21:29:19,384 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 5093 transitions. Word has length 161 [2023-11-24 21:29:19,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:19,384 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 5093 transitions. [2023-11-24 21:29:19,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 5093 transitions. [2023-11-24 21:29:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-24 21:29:19,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:19,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:19,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:29:19,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:29:19,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:19,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1026584730, now seen corresponding path program 1 times [2023-11-24 21:29:19,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:19,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960945114] [2023-11-24 21:29:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:19,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:29:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-24 21:29:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:19,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-24 21:29:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-24 21:29:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:19,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-24 21:29:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:19,879 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 21:29:19,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:19,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960945114] [2023-11-24 21:29:19,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960945114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:19,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:19,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:29:19,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83471831] [2023-11-24 21:29:19,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:19,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:29:19,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:19,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:29:19,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:29:19,885 INFO L87 Difference]: Start difference. First operand 2815 states and 5093 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:26,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:26,076 INFO L93 Difference]: Finished difference Result 4247 states and 7492 transitions. [2023-11-24 21:29:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:29:26,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-24 21:29:26,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:26,100 INFO L225 Difference]: With dead ends: 4247 [2023-11-24 21:29:26,100 INFO L226 Difference]: Without dead ends: 3571 [2023-11-24 21:29:26,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:29:26,105 INFO L413 NwaCegarLoop]: 4419 mSDtfsCounter, 5470 mSDsluCounter, 17358 mSDsCounter, 0 mSdLazyCounter, 3725 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5489 SdHoareTripleChecker+Valid, 21777 SdHoareTripleChecker+Invalid, 3786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:26,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5489 Valid, 21777 Invalid, 3786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 3725 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-24 21:29:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2023-11-24 21:29:26,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 3136. [2023-11-24 21:29:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3136 states, 3046 states have (on average 1.7957977675640184) internal successors, (5470), 3050 states have internal predecessors, (5470), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-11-24 21:29:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 5611 transitions. [2023-11-24 21:29:26,243 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 5611 transitions. Word has length 161 [2023-11-24 21:29:26,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:26,244 INFO L495 AbstractCegarLoop]: Abstraction has 3136 states and 5611 transitions. [2023-11-24 21:29:26,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 5611 transitions. [2023-11-24 21:29:26,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-24 21:29:26,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:26,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:26,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:29:26,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:29:26,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:26,250 INFO L85 PathProgramCache]: Analyzing trace with hash -761285092, now seen corresponding path program 1 times [2023-11-24 21:29:26,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:26,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121805225] [2023-11-24 21:29:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:26,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:26,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:29:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-24 21:29:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:26,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-24 21:29:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:26,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-24 21:29:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-24 21:29:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:26,669 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 21:29:26,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:26,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121805225] [2023-11-24 21:29:26,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121805225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:26,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:26,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:29:26,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554468209] [2023-11-24 21:29:26,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:26,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:29:26,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:26,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:29:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:29:26,682 INFO L87 Difference]: Start difference. First operand 3136 states and 5611 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:32,116 INFO L93 Difference]: Finished difference Result 5485 states and 9538 transitions. [2023-11-24 21:29:32,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:29:32,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-24 21:29:32,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:32,151 INFO L225 Difference]: With dead ends: 5485 [2023-11-24 21:29:32,151 INFO L226 Difference]: Without dead ends: 4488 [2023-11-24 21:29:32,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:29:32,159 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 5580 mSDsluCounter, 16851 mSDsCounter, 0 mSdLazyCounter, 3091 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5599 SdHoareTripleChecker+Valid, 21081 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:32,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5599 Valid, 21081 Invalid, 3190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [99 Valid, 3091 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-24 21:29:32,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2023-11-24 21:29:32,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 3779. [2023-11-24 21:29:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3779 states, 3633 states have (on average 1.766859344894027) internal successors, (6419), 3639 states have internal predecessors, (6419), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-11-24 21:29:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 6652 transitions. [2023-11-24 21:29:32,349 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 6652 transitions. Word has length 161 [2023-11-24 21:29:32,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:32,350 INFO L495 AbstractCegarLoop]: Abstraction has 3779 states and 6652 transitions. [2023-11-24 21:29:32,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:32,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 6652 transitions. [2023-11-24 21:29:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-24 21:29:32,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:32,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:32,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:29:32,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:29:32,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1397799002, now seen corresponding path program 1 times [2023-11-24 21:29:32,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:32,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715282579] [2023-11-24 21:29:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:32,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:29:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:32,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-24 21:29:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:32,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-24 21:29:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:32,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-24 21:29:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:32,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-24 21:29:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:32,877 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 21:29:32,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:32,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715282579] [2023-11-24 21:29:32,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715282579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:32,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:32,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:29:32,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860027018] [2023-11-24 21:29:32,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:32,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:29:32,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:32,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:29:32,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:29:32,881 INFO L87 Difference]: Start difference. First operand 3779 states and 6652 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)