./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.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_055c87e9-7798-4809-9550-bacc828143a5/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/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_055c87e9-7798-4809-9550-bacc828143a5/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/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_055c87e9-7798-4809-9550-bacc828143a5/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 5738c99ca39a13f327ff059e5a6f3b47670e1701984219677e7b62ff58bbdc65 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:03:12,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:03:13,077 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:03:13,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:03:13,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:03:13,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:03:13,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:03:13,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:03:13,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:03:13,146 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:03:13,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:03:13,147 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:03:13,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:03:13,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:03:13,149 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:03:13,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:03:13,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:03:13,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:03:13,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:03:13,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:03:13,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:03:13,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:03:13,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:03:13,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:03:13,153 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:03:13,153 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:03:13,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:03:13,154 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:03:13,155 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:03:13,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:03:13,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:03:13,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:03:13,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:13,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:03:13,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:03:13,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:03:13,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:03:13,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:03:13,158 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:03:13,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:03:13,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:03:13,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:03:13,163 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_055c87e9-7798-4809-9550-bacc828143a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5738c99ca39a13f327ff059e5a6f3b47670e1701984219677e7b62ff58bbdc65 [2024-10-31 22:03:13,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:03:13,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:03:13,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:03:13,610 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:03:13,610 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:03:13,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c Unable to find full path for "g++" [2024-10-31 22:03:15,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:03:16,431 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:03:16,433 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c [2024-10-31 22:03:16,484 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/bin/uautomizer-verify-4GaUIPS5ZU/data/ecf747e7c/01948b5d1823476fb5d9e18a7be8db4e/FLAGed091f61b [2024-10-31 22:03:16,505 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/bin/uautomizer-verify-4GaUIPS5ZU/data/ecf747e7c/01948b5d1823476fb5d9e18a7be8db4e [2024-10-31 22:03:16,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:03:16,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:03:16,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:16,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:03:16,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:03:16,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:16" (1/1) ... [2024-10-31 22:03:16,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ef1f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:16, skipping insertion in model container [2024-10-31 22:03:16,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:16" (1/1) ... [2024-10-31 22:03:16,735 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:03:19,062 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_055c87e9-7798-4809-9550-bacc828143a5/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[378560,378573] [2024-10-31 22:03:19,160 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_055c87e9-7798-4809-9550-bacc828143a5/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[383339,383352] [2024-10-31 22:03:19,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:19,406 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:03:20,557 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_055c87e9-7798-4809-9550-bacc828143a5/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[378560,378573] [2024-10-31 22:03:20,568 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_055c87e9-7798-4809-9550-bacc828143a5/sv-benchmarks/c/combinations/Problem05_label42+token_ring.07.cil-2.c[383339,383352] [2024-10-31 22:03:20,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:20,686 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:03:20,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20 WrapperNode [2024-10-31 22:03:20,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:20,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:20,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:03:20,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:03:20,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:20,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:21,227 INFO L138 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 12939 [2024-10-31 22:03:21,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:21,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:03:21,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:03:21,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:03:21,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:21,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:21,286 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:21,444 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 22:03:21,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:21,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:21,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:21,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:21,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:21,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:21,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:03:21,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:03:21,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:03:21,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:03:21,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:21,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:21,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:03:21,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055c87e9-7798-4809-9550-bacc828143a5/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:03:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:03:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-31 22:03:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-31 22:03:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 22:03:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 22:03:21,984 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-31 22:03:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-31 22:03:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-31 22:03:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-31 22:03:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-31 22:03:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-31 22:03:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-31 22:03:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-31 22:03:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-31 22:03:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-31 22:03:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:03:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:03:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:03:22,162 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:03:22,165 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:03:33,183 INFO L? ?]: Removed 1729 outVars from TransFormulas that were not future-live. [2024-10-31 22:03:33,184 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:03:33,253 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:03:33,254 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-31 22:03:33,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:33 BoogieIcfgContainer [2024-10-31 22:03:33,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:03:33,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:03:33,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:03:33,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:03:33,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:03:16" (1/3) ... [2024-10-31 22:03:33,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc0ece5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:33, skipping insertion in model container [2024-10-31 22:03:33,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20" (2/3) ... [2024-10-31 22:03:33,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc0ece5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:33, skipping insertion in model container [2024-10-31 22:03:33,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:33" (3/3) ... [2024-10-31 22:03:33,267 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.07.cil-2.c [2024-10-31 22:03:33,287 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:03:33,287 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:03:33,433 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:03:33,444 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;@50defdeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:03:33,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:03:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 2456 states, 2423 states have (on average 1.8472967395790343) internal successors, (4476), 2428 states have internal predecessors, (4476), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-31 22:03:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-31 22:03:33,478 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:33,479 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:33,479 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:33,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:33,485 INFO L85 PathProgramCache]: Analyzing trace with hash -165382437, now seen corresponding path program 1 times [2024-10-31 22:03:33,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:33,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345407734] [2024-10-31 22:03:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:33,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:33,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:03:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:34,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:03:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:34,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:03:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:34,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 22:03:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:34,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-31 22:03:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:34,200 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 22:03:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:34,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345407734] [2024-10-31 22:03:34,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345407734] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:34,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:34,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:34,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076668187] [2024-10-31 22:03:34,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:34,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:34,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:34,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:34,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:34,273 INFO L87 Difference]: Start difference. First operand has 2456 states, 2423 states have (on average 1.8472967395790343) internal successors, (4476), 2428 states have internal predecessors, (4476), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 22:03:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:36,148 INFO L93 Difference]: Finished difference Result 4986 states and 9171 transitions. [2024-10-31 22:03:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:03:36,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 124 [2024-10-31 22:03:36,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:36,193 INFO L225 Difference]: With dead ends: 4986 [2024-10-31 22:03:36,193 INFO L226 Difference]: Without dead ends: 2475 [2024-10-31 22:03:36,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:03:36,213 INFO L432 NwaCegarLoop]: 4279 mSDtfsCounter, 679 mSDsluCounter, 12369 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 16648 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:36,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 16648 Invalid, 702 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 22:03:36,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2024-10-31 22:03:36,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2388. [2024-10-31 22:03:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2388 states, 2357 states have (on average 1.8341111582520153) internal successors, (4323), 2360 states have internal predecessors, (4323), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-31 22:03:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4367 transitions. [2024-10-31 22:03:36,402 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4367 transitions. Word has length 124 [2024-10-31 22:03:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:36,403 INFO L471 AbstractCegarLoop]: Abstraction has 2388 states and 4367 transitions. [2024-10-31 22:03:36,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 22:03:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4367 transitions. [2024-10-31 22:03:36,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-31 22:03:36,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:36,408 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:36,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:03:36,408 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:36,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:36,409 INFO L85 PathProgramCache]: Analyzing trace with hash 873202137, now seen corresponding path program 1 times [2024-10-31 22:03:36,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:36,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925989727] [2024-10-31 22:03:36,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:36,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:03:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:03:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:03:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 22:03:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-31 22:03:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,832 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 22:03:36,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:36,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925989727] [2024-10-31 22:03:36,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925989727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:36,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:36,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:03:36,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439495019] [2024-10-31 22:03:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:36,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:03:36,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:36,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:03:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:03:36,842 INFO L87 Difference]: Start difference. First operand 2388 states and 4367 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 22:03:40,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:40,057 INFO L93 Difference]: Finished difference Result 3074 states and 5454 transitions. [2024-10-31 22:03:40,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:03:40,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 124 [2024-10-31 22:03:40,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:40,074 INFO L225 Difference]: With dead ends: 3074 [2024-10-31 22:03:40,075 INFO L226 Difference]: Without dead ends: 2822 [2024-10-31 22:03:40,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:03:40,079 INFO L432 NwaCegarLoop]: 4190 mSDtfsCounter, 4967 mSDsluCounter, 12573 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4981 SdHoareTripleChecker+Valid, 16763 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:40,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4981 Valid, 16763 Invalid, 1526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-31 22:03:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2024-10-31 22:03:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2647. [2024-10-31 22:03:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2593 states have (on average 1.8094870806016197) internal successors, (4692), 2597 states have internal predecessors, (4692), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2024-10-31 22:03:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 4771 transitions. [2024-10-31 22:03:40,213 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 4771 transitions. Word has length 124 [2024-10-31 22:03:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:40,214 INFO L471 AbstractCegarLoop]: Abstraction has 2647 states and 4771 transitions. [2024-10-31 22:03:40,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 22:03:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 4771 transitions. [2024-10-31 22:03:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-31 22:03:40,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:40,218 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:40,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:03:40,218 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:40,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:40,219 INFO L85 PathProgramCache]: Analyzing trace with hash -144446251, now seen corresponding path program 1 times [2024-10-31 22:03:40,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:40,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555397242] [2024-10-31 22:03:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:40,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:03:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:03:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:03:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 22:03:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-31 22:03:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,670 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 22:03:40,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:40,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555397242] [2024-10-31 22:03:40,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555397242] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:40,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:40,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:03:40,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736457118] [2024-10-31 22:03:40,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:40,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:03:40,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:40,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:03:40,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:40,674 INFO L87 Difference]: Start difference. First operand 2647 states and 4771 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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)