./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU --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 546425dfb0e9d0673715f309b3c99445cd7a29ebb128e47cf94e5f13217a2c6c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:16:55,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:16:55,418 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:16:55,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:16:55,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:16:55,448 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:16:55,449 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:16:55,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:16:55,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:16:55,450 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:16:55,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:16:55,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:16:55,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:16:55,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:16:55,453 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:16:55,453 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:16:55,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:16:55,454 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:16:55,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:16:55,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:16:55,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:16:55,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:16:55,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:16:55,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:16:55,458 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:16:55,458 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:16:55,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:16:55,459 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:16:55,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:16:55,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:16:55,460 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:16:55,460 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:16:55,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:16:55,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:16:55,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:16:55,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:16:55,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:16:55,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:16:55,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:16:55,463 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:16:55,463 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:16:55,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:16:55,464 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_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 546425dfb0e9d0673715f309b3c99445cd7a29ebb128e47cf94e5f13217a2c6c [2024-10-31 22:16:55,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:16:55,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:16:55,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:16:55,779 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:16:55,779 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:16:55,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c Unable to find full path for "g++" [2024-10-31 22:16:57,765 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:16:58,477 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:16:58,479 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c [2024-10-31 22:16:58,533 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/data/7ab51d4da/a42a30551e5d4ef28dca2c299533d1ae/FLAG831da8c76 [2024-10-31 22:16:58,849 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/data/7ab51d4da/a42a30551e5d4ef28dca2c299533d1ae [2024-10-31 22:16:58,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:16:58,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:16:58,857 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:16:58,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:16:58,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:16:58,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:16:58" (1/1) ... [2024-10-31 22:16:58,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487cb696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:16:58, skipping insertion in model container [2024-10-31 22:16:58,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:16:58" (1/1) ... [2024-10-31 22:16:59,213 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:17:01,609 WARN L251 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_0ed2732c-82f3-4f72-bc7f-21431894d6bd/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c[380323,380336] [2024-10-31 22:17:01,639 WARN L251 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_0ed2732c-82f3-4f72-bc7f-21431894d6bd/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c[383339,383352] [2024-10-31 22:17:01,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:01,904 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:17:03,140 WARN L251 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_0ed2732c-82f3-4f72-bc7f-21431894d6bd/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c[380323,380336] [2024-10-31 22:17:03,147 WARN L251 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_0ed2732c-82f3-4f72-bc7f-21431894d6bd/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c[383339,383352] [2024-10-31 22:17:03,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:03,274 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:17:03,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03 WrapperNode [2024-10-31 22:17:03,276 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:03,277 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:03,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:17:03,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:17:03,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:03,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:03,766 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12759 [2024-10-31 22:17:03,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:03,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:17:03,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:17:03,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:17:03,779 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:03,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:03,826 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:04,015 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:17:04,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:04,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:04,264 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:04,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:04,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:04,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:04,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:17:04,395 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:17:04,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:17:04,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:17:04,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (1/1) ... [2024-10-31 22:17:04,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:04,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:04,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:04,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed2732c-82f3-4f72-bc7f-21431894d6bd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:17:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:17:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-31 22:17:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-31 22:17:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 22:17:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 22:17:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-31 22:17:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-31 22:17:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-31 22:17:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-31 22:17:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-31 22:17:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-31 22:17:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-31 22:17:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-31 22:17:04,478 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-31 22:17:04,478 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-31 22:17:04,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:17:04,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:17:04,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:17:04,634 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:17:04,636 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:17:14,727 INFO L? ?]: Removed 1711 outVars from TransFormulas that were not future-live. [2024-10-31 22:17:14,727 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:17:14,807 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:17:14,808 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-31 22:17:14,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:14 BoogieIcfgContainer [2024-10-31 22:17:14,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:17:14,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:17:14,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:17:14,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:17:14,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:16:58" (1/3) ... [2024-10-31 22:17:14,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2d2fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:14, skipping insertion in model container [2024-10-31 22:17:14,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:03" (2/3) ... [2024-10-31 22:17:14,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2d2fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:14, skipping insertion in model container [2024-10-31 22:17:14,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:14" (3/3) ... [2024-10-31 22:17:14,822 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.04.cil-2.c [2024-10-31 22:17:14,842 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:17:14,842 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:17:14,973 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:14,981 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10de32fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:14,982 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:17:14,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 2378 states, 2348 states have (on average 1.852640545144804) internal successors, (4350), 2353 states have internal predecessors, (4350), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-31 22:17:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-31 22:17:15,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:15,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:15,010 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:15,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash 482633735, now seen corresponding path program 1 times [2024-10-31 22:17:15,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975096296] [2024-10-31 22:17:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:15,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:15,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:17:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:15,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:17:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:15,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:17:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:15,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:17:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:15,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:17:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:15,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:15,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975096296] [2024-10-31 22:17:15,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975096296] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:15,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:15,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:17:15,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924767424] [2024-10-31 22:17:15,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:15,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:17:15,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:15,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:17:15,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:17:15,638 INFO L87 Difference]: Start difference. First operand has 2378 states, 2348 states have (on average 1.852640545144804) internal successors, (4350), 2353 states have internal predecessors, (4350), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (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) [2024-10-31 22:17:16,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:16,860 INFO L93 Difference]: Finished difference Result 4803 states and 8862 transitions. [2024-10-31 22:17:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:17:16,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (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 91 [2024-10-31 22:17:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:16,897 INFO L225 Difference]: With dead ends: 4803 [2024-10-31 22:17:16,898 INFO L226 Difference]: Without dead ends: 2364 [2024-10-31 22:17:16,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:17:16,915 INFO L432 NwaCegarLoop]: 4210 mSDtfsCounter, 457 mSDsluCounter, 12285 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 16495 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:16,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 16495 Invalid, 465 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:17:16,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2024-10-31 22:17:17,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2310. [2024-10-31 22:17:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2310 states, 2282 states have (on average 1.8418054338299736) internal successors, (4203), 2285 states have internal predecessors, (4203), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-31 22:17:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 4241 transitions. [2024-10-31 22:17:17,089 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 4241 transitions. Word has length 91 [2024-10-31 22:17:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:17,090 INFO L471 AbstractCegarLoop]: Abstraction has 2310 states and 4241 transitions. [2024-10-31 22:17:17,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (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) [2024-10-31 22:17:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 4241 transitions. [2024-10-31 22:17:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-31 22:17:17,094 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:17,095 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:17,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:17:17,095 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:17,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1084124215, now seen corresponding path program 1 times [2024-10-31 22:17:17,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:17,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687128467] [2024-10-31 22:17:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:17,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:17,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:17:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:17,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:17:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:17,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:17:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:17,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:17:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:17,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:17:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:17,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:17,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687128467] [2024-10-31 22:17:17,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687128467] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:17,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:17,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:17:17,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634734379] [2024-10-31 22:17:17,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:17,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:17:17,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:17,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:17:17,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:17:17,619 INFO L87 Difference]: Start difference. First operand 2310 states and 4241 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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) [2024-10-31 22:17:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:19,587 INFO L93 Difference]: Finished difference Result 2774 states and 4962 transitions. [2024-10-31 22:17:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:17:19,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 91 [2024-10-31 22:17:19,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:19,604 INFO L225 Difference]: With dead ends: 2774 [2024-10-31 22:17:19,605 INFO L226 Difference]: Without dead ends: 2597 [2024-10-31 22:17:19,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:17:19,608 INFO L432 NwaCegarLoop]: 4127 mSDtfsCounter, 4619 mSDsluCounter, 12372 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 16499 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:19,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4630 Valid, 16499 Invalid, 1010 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-31 22:17:19,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2024-10-31 22:17:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2488. [2024-10-31 22:17:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2440 states have (on average 1.8221311475409836) internal successors, (4446), 2444 states have internal predecessors, (4446), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2024-10-31 22:17:19,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 4513 transitions. [2024-10-31 22:17:19,702 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 4513 transitions. Word has length 91 [2024-10-31 22:17:19,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:19,703 INFO L471 AbstractCegarLoop]: Abstraction has 2488 states and 4513 transitions. [2024-10-31 22:17:19,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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) [2024-10-31 22:17:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 4513 transitions. [2024-10-31 22:17:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-31 22:17:19,709 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:19,710 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:19,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:17:19,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:19,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:19,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1156138437, now seen corresponding path program 1 times [2024-10-31 22:17:19,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:19,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752210866] [2024-10-31 22:17:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:19,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:19,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:17:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:19,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:17:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:20,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:17:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:20,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:17:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:20,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:17:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752210866] [2024-10-31 22:17:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752210866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:20,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:20,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:17:20,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114351585] [2024-10-31 22:17:20,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:20,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:17:20,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:17:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:17:20,074 INFO L87 Difference]: Start difference. First operand 2488 states and 4513 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2024-10-31 22:17:22,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:22,138 INFO L93 Difference]: Finished difference Result 3187 states and 5594 transitions. [2024-10-31 22:17:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:17:22,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 91 [2024-10-31 22:17:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:22,153 INFO L225 Difference]: With dead ends: 3187 [2024-10-31 22:17:22,153 INFO L226 Difference]: Without dead ends: 2832 [2024-10-31 22:17:22,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:17:22,158 INFO L432 NwaCegarLoop]: 4253 mSDtfsCounter, 4620 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4631 SdHoareTripleChecker+Valid, 21061 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:22,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4631 Valid, 21061 Invalid, 1543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-31 22:17:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2024-10-31 22:17:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2655. [2024-10-31 22:17:22,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2655 states, 2587 states have (on average 1.8040201005025125) internal successors, (4667), 2592 states have internal predecessors, (4667), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2024-10-31 22:17:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2655 states to 2655 states and 4762 transitions. [2024-10-31 22:17:22,272 INFO L78 Accepts]: Start accepts. Automaton has 2655 states and 4762 transitions. Word has length 91 [2024-10-31 22:17:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:22,273 INFO L471 AbstractCegarLoop]: Abstraction has 2655 states and 4762 transitions. [2024-10-31 22:17:22,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2024-10-31 22:17:22,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2655 states and 4762 transitions. [2024-10-31 22:17:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-31 22:17:22,275 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:22,275 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:22,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:17:22,276 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:22,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:22,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1404724409, now seen corresponding path program 1 times [2024-10-31 22:17:22,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:22,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208342346] [2024-10-31 22:17:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:22,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:22,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:17:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:22,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:17:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:22,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:17:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:22,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:17:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:22,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:17:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:22,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:22,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208342346] [2024-10-31 22:17:22,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208342346] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:22,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:22,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:17:22,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462427064] [2024-10-31 22:17:22,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:22,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:17:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:22,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:17:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:17:22,520 INFO L87 Difference]: Start difference. First operand 2655 states and 4762 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2024-10-31 22:17:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:17:24,662 INFO L93 Difference]: Finished difference Result 3795 states and 6521 transitions. [2024-10-31 22:17:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:17:24,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 91 [2024-10-31 22:17:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:17:24,677 INFO L225 Difference]: With dead ends: 3795 [2024-10-31 22:17:24,677 INFO L226 Difference]: Without dead ends: 3273 [2024-10-31 22:17:24,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:17:24,681 INFO L432 NwaCegarLoop]: 4137 mSDtfsCounter, 4670 mSDsluCounter, 16482 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 20619 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:17:24,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 20619 Invalid, 1334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-31 22:17:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2024-10-31 22:17:24,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2990. [2024-10-31 22:17:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2882 states have (on average 1.7730742539902846) internal successors, (5110), 2889 states have internal predecessors, (5110), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2024-10-31 22:17:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 5265 transitions. [2024-10-31 22:17:24,810 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 5265 transitions. Word has length 91 [2024-10-31 22:17:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:17:24,811 INFO L471 AbstractCegarLoop]: Abstraction has 2990 states and 5265 transitions. [2024-10-31 22:17:24,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2024-10-31 22:17:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 5265 transitions. [2024-10-31 22:17:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-31 22:17:24,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:17:24,816 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:24,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:17:24,816 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:17:24,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:24,817 INFO L85 PathProgramCache]: Analyzing trace with hash -517501563, now seen corresponding path program 1 times [2024-10-31 22:17:24,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:24,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536600344] [2024-10-31 22:17:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:24,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:24,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:17:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:24,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:17:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:24,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:17:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:25,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:17:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:25,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:17:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:25,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:25,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:25,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536600344] [2024-10-31 22:17:25,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536600344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:25,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:25,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:17:25,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878516076] [2024-10-31 22:17:25,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:25,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:17:25,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:25,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:17:25,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:17:25,016 INFO L87 Difference]: Start difference. First operand 2990 states and 5265 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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)