./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB --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 16e147b68a860b93a665f8bd36a316225675cf186d50a72fc3242bc6ec552f78 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:04:25,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:04:25,597 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:04:25,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:04:25,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:04:25,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:04:25,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:04:25,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:04:25,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:04:25,634 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:04:25,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:04:25,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:04:25,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:04:25,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:04:25,635 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:04:25,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:04:25,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:04:25,636 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:04:25,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:04:25,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:04:25,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:04:25,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:04:25,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:04:25,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:04:25,637 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:04:25,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:04:25,637 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:04:25,637 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:04:25,638 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:04:25,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:04:25,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:04:25,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:04:25,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:04:25,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:04:25,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:04:25,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:04:25,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:04:25,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:04:25,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:04:25,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:04:25,641 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:04:25,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:04:25,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:04:25,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:04:25,642 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:04:25,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:04:25,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:04:25,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:04:25,642 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 16e147b68a860b93a665f8bd36a316225675cf186d50a72fc3242bc6ec552f78 [2024-11-28 05:04:25,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:04:25,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:04:26,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:04:26,004 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:04:26,004 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:04:26,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/systemc/token_ring.05.cil-2.c [2024-11-28 05:04:29,093 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/data/126e83f8c/4d5936ba4bed4a989a722ede242ae955/FLAGf3978e7ab [2024-11-28 05:04:29,492 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:04:29,492 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/sv-benchmarks/c/systemc/token_ring.05.cil-2.c [2024-11-28 05:04:29,516 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/data/126e83f8c/4d5936ba4bed4a989a722ede242ae955/FLAGf3978e7ab [2024-11-28 05:04:29,544 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/data/126e83f8c/4d5936ba4bed4a989a722ede242ae955 [2024-11-28 05:04:29,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:04:29,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:04:29,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:04:29,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:04:29,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:04:29,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:29" (1/1) ... [2024-11-28 05:04:29,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7f97d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:29, skipping insertion in model container [2024-11-28 05:04:29,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:29" (1/1) ... [2024-11-28 05:04:29,617 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:04:29,817 WARN L250 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_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/sv-benchmarks/c/systemc/token_ring.05.cil-2.c[671,684] [2024-11-28 05:04:29,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:04:30,007 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:04:30,020 WARN L250 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_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/sv-benchmarks/c/systemc/token_ring.05.cil-2.c[671,684] [2024-11-28 05:04:30,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:04:30,094 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:04:30,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30 WrapperNode [2024-11-28 05:04:30,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:04:30,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:04:30,096 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:04:30,096 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:04:30,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,117 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,152 INFO L138 Inliner]: procedures = 38, calls = 47, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 457 [2024-11-28 05:04:30,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:04:30,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:04:30,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:04:30,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:04:30,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,188 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]. [2024-11-28 05:04:30,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,197 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:04:30,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:04:30,220 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:04:30,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:04:30,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (1/1) ... [2024-11-28 05:04:30,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:04:30,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:30,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:04:30,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a9f1d72-b2be-4b8f-a478-64e99bbbdd09/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:04:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:04:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-28 05:04:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-28 05:04:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-28 05:04:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-28 05:04:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-28 05:04:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-28 05:04:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-28 05:04:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-28 05:04:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-28 05:04:30,286 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-28 05:04:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-28 05:04:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-28 05:04:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:04:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-28 05:04:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-28 05:04:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:04:30,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:04:30,393 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:04:30,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:04:31,260 INFO L? ?]: Removed 59 outVars from TransFormulas that were not future-live. [2024-11-28 05:04:31,261 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:04:31,287 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:04:31,288 INFO L312 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-28 05:04:31,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:31 BoogieIcfgContainer [2024-11-28 05:04:31,288 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:04:31,294 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:04:31,294 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:04:31,299 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:04:31,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:04:29" (1/3) ... [2024-11-28 05:04:31,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b98bd6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:31, skipping insertion in model container [2024-11-28 05:04:31,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:30" (2/3) ... [2024-11-28 05:04:31,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b98bd6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:31, skipping insertion in model container [2024-11-28 05:04:31,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:31" (3/3) ... [2024-11-28 05:04:31,304 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.05.cil-2.c [2024-11-28 05:04:31,323 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:04:31,326 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.05.cil-2.c that has 8 procedures, 213 locations, 1 initial locations, 8 loop locations, and 1 error locations. [2024-11-28 05:04:31,396 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:04:31,414 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;@11746abf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:04:31,415 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:04:31,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 184 states have (on average 1.6304347826086956) internal successors, (300), 187 states have internal predecessors, (300), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-28 05:04:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 05:04:31,438 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:31,439 INFO L218 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] [2024-11-28 05:04:31,439 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:31,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:31,445 INFO L85 PathProgramCache]: Analyzing trace with hash 475668969, now seen corresponding path program 1 times [2024-11-28 05:04:31,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:31,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128508346] [2024-11-28 05:04:31,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:32,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128508346] [2024-11-28 05:04:32,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128508346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:32,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:32,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:04:32,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405900653] [2024-11-28 05:04:32,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:32,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:04:32,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:32,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:04:32,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:04:32,263 INFO L87 Difference]: Start difference. First operand has 213 states, 184 states have (on average 1.6304347826086956) internal successors, (300), 187 states have internal predecessors, (300), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:33,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:33,021 INFO L93 Difference]: Finished difference Result 629 states and 1024 transitions. [2024-11-28 05:04:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:04:33,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (6), 3 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 99 [2024-11-28 05:04:33,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:33,035 INFO L225 Difference]: With dead ends: 629 [2024-11-28 05:04:33,035 INFO L226 Difference]: Without dead ends: 421 [2024-11-28 05:04:33,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:04:33,042 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 573 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:33,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 890 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:04:33,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-28 05:04:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 404. [2024-11-28 05:04:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 355 states have (on average 1.5633802816901408) internal successors, (555), 358 states have internal predecessors, (555), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2024-11-28 05:04:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 624 transitions. [2024-11-28 05:04:33,131 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 624 transitions. Word has length 99 [2024-11-28 05:04:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:33,133 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 624 transitions. [2024-11-28 05:04:33,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 624 transitions. [2024-11-28 05:04:33,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 05:04:33,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:33,140 INFO L218 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] [2024-11-28 05:04:33,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:04:33,140 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:33,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1380829723, now seen corresponding path program 1 times [2024-11-28 05:04:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:33,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711783321] [2024-11-28 05:04:33,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:33,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:33,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:33,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711783321] [2024-11-28 05:04:33,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711783321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:33,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:33,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:04:33,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342914553] [2024-11-28 05:04:33,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:33,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:04:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:33,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:04:33,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:04:33,461 INFO L87 Difference]: Start difference. First operand 404 states and 624 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:34,283 INFO L93 Difference]: Finished difference Result 1044 states and 1627 transitions. [2024-11-28 05:04:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:04:34,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 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 99 [2024-11-28 05:04:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:34,288 INFO L225 Difference]: With dead ends: 1044 [2024-11-28 05:04:34,288 INFO L226 Difference]: Without dead ends: 653 [2024-11-28 05:04:34,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:34,291 INFO L435 NwaCegarLoop]: 412 mSDtfsCounter, 564 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:34,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1638 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:04:34,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-28 05:04:34,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 588. [2024-11-28 05:04:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 518 states have (on average 1.555984555984556) internal successors, (806), 522 states have internal predecessors, (806), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2024-11-28 05:04:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 906 transitions. [2024-11-28 05:04:34,352 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 906 transitions. Word has length 99 [2024-11-28 05:04:34,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:34,352 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 906 transitions. [2024-11-28 05:04:34,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 906 transitions. [2024-11-28 05:04:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 05:04:34,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:34,355 INFO L218 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] [2024-11-28 05:04:34,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:04:34,355 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:34,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:34,356 INFO L85 PathProgramCache]: Analyzing trace with hash -55973529, now seen corresponding path program 1 times [2024-11-28 05:04:34,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:34,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257056046] [2024-11-28 05:04:34,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:34,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:34,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:34,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257056046] [2024-11-28 05:04:34,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257056046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:34,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:34,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:04:34,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074015263] [2024-11-28 05:04:34,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:34,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:04:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:34,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:04:34,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:04:34,636 INFO L87 Difference]: Start difference. First operand 588 states and 906 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:35,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:35,508 INFO L93 Difference]: Finished difference Result 1624 states and 2528 transitions. [2024-11-28 05:04:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:04:35,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 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 99 [2024-11-28 05:04:35,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:35,521 INFO L225 Difference]: With dead ends: 1624 [2024-11-28 05:04:35,521 INFO L226 Difference]: Without dead ends: 1049 [2024-11-28 05:04:35,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:35,524 INFO L435 NwaCegarLoop]: 408 mSDtfsCounter, 559 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:35,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1622 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:04:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2024-11-28 05:04:35,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 977. [2024-11-28 05:04:35,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 863 states have (on average 1.556199304750869) internal successors, (1343), 871 states have internal predecessors, (1343), 77 states have call successors, (77), 31 states have call predecessors, (77), 36 states have return successors, (91), 78 states have call predecessors, (91), 75 states have call successors, (91) [2024-11-28 05:04:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1511 transitions. [2024-11-28 05:04:35,623 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1511 transitions. Word has length 99 [2024-11-28 05:04:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:35,624 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1511 transitions. [2024-11-28 05:04:35,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:35,624 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1511 transitions. [2024-11-28 05:04:35,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 05:04:35,627 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:35,627 INFO L218 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] [2024-11-28 05:04:35,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:04:35,627 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:35,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:35,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1510784421, now seen corresponding path program 1 times [2024-11-28 05:04:35,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:35,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185351088] [2024-11-28 05:04:35,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:35,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:35,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:35,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185351088] [2024-11-28 05:04:35,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185351088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:35,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:35,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:04:35,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063314352] [2024-11-28 05:04:35,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:35,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:04:35,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:35,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:04:35,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:04:35,905 INFO L87 Difference]: Start difference. First operand 977 states and 1511 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:36,801 INFO L93 Difference]: Finished difference Result 2863 states and 4491 transitions. [2024-11-28 05:04:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:04:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 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 99 [2024-11-28 05:04:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:36,825 INFO L225 Difference]: With dead ends: 2863 [2024-11-28 05:04:36,826 INFO L226 Difference]: Without dead ends: 1899 [2024-11-28 05:04:36,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:36,833 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 554 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:36,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1610 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:04:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-11-28 05:04:37,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1812. [2024-11-28 05:04:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1604 states have (on average 1.5654613466334164) internal successors, (2511), 1626 states have internal predecessors, (2511), 133 states have call successors, (133), 55 states have call predecessors, (133), 74 states have return successors, (195), 138 states have call predecessors, (195), 131 states have call successors, (195) [2024-11-28 05:04:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2839 transitions. [2024-11-28 05:04:37,043 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2839 transitions. Word has length 99 [2024-11-28 05:04:37,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:37,043 INFO L471 AbstractCegarLoop]: Abstraction has 1812 states and 2839 transitions. [2024-11-28 05:04:37,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:37,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2839 transitions. [2024-11-28 05:04:37,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 05:04:37,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:37,046 INFO L218 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] [2024-11-28 05:04:37,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:04:37,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:37,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:37,048 INFO L85 PathProgramCache]: Analyzing trace with hash 452946343, now seen corresponding path program 1 times [2024-11-28 05:04:37,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:37,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238485185] [2024-11-28 05:04:37,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:37,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:37,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:37,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238485185] [2024-11-28 05:04:37,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238485185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:37,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:37,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:04:37,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143785775] [2024-11-28 05:04:37,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:37,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:04:37,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:37,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:04:37,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:04:37,242 INFO L87 Difference]: Start difference. First operand 1812 states and 2839 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:38,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:38,241 INFO L93 Difference]: Finished difference Result 5550 states and 8877 transitions. [2024-11-28 05:04:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:04:38,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 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 99 [2024-11-28 05:04:38,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:38,267 INFO L225 Difference]: With dead ends: 5550 [2024-11-28 05:04:38,267 INFO L226 Difference]: Without dead ends: 3751 [2024-11-28 05:04:38,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:38,276 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 549 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:38,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 1598 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:04:38,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2024-11-28 05:04:38,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3635. [2024-11-28 05:04:38,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3221 states have (on average 1.5818068922694815) internal successors, (5095), 3289 states have internal predecessors, (5095), 245 states have call successors, (245), 103 states have call predecessors, (245), 168 states have return successors, (499), 258 states have call predecessors, (499), 243 states have call successors, (499) [2024-11-28 05:04:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5839 transitions. [2024-11-28 05:04:38,624 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5839 transitions. Word has length 99 [2024-11-28 05:04:38,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:38,624 INFO L471 AbstractCegarLoop]: Abstraction has 3635 states and 5839 transitions. [2024-11-28 05:04:38,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:38,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5839 transitions. [2024-11-28 05:04:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 05:04:38,630 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:38,631 INFO L218 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] [2024-11-28 05:04:38,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:04:38,631 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:38,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:38,632 INFO L85 PathProgramCache]: Analyzing trace with hash -689556123, now seen corresponding path program 1 times [2024-11-28 05:04:38,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:38,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783524278] [2024-11-28 05:04:38,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:38,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:38,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:38,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783524278] [2024-11-28 05:04:38,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783524278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:38,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:38,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:04:38,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232293667] [2024-11-28 05:04:38,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:38,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:04:38,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:38,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:04:38,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:04:38,837 INFO L87 Difference]: Start difference. First operand 3635 states and 5839 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:40,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:40,089 INFO L93 Difference]: Finished difference Result 12017 states and 19768 transitions. [2024-11-28 05:04:40,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:04:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 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 99 [2024-11-28 05:04:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:40,148 INFO L225 Difference]: With dead ends: 12017 [2024-11-28 05:04:40,148 INFO L226 Difference]: Without dead ends: 8395 [2024-11-28 05:04:40,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:40,163 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 731 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:40,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1098 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:04:40,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8395 states. [2024-11-28 05:04:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8395 to 7557. [2024-11-28 05:04:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7557 states, 6693 states have (on average 1.6000298819662333) internal successors, (10709), 6907 states have internal predecessors, (10709), 453 states have call successors, (453), 199 states have call predecessors, (453), 410 states have return successors, (1475), 482 states have call predecessors, (1475), 451 states have call successors, (1475) [2024-11-28 05:04:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 12637 transitions. [2024-11-28 05:04:40,829 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 12637 transitions. Word has length 99 [2024-11-28 05:04:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:40,829 INFO L471 AbstractCegarLoop]: Abstraction has 7557 states and 12637 transitions. [2024-11-28 05:04:40,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:40,830 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 12637 transitions. [2024-11-28 05:04:40,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 05:04:40,840 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:40,842 INFO L218 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] [2024-11-28 05:04:40,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:04:40,842 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:40,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:40,843 INFO L85 PathProgramCache]: Analyzing trace with hash 149477539, now seen corresponding path program 1 times [2024-11-28 05:04:40,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:40,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430548589] [2024-11-28 05:04:40,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:40,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:41,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:41,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430548589] [2024-11-28 05:04:41,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430548589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:41,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:41,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:04:41,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706733615] [2024-11-28 05:04:41,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:41,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:04:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:41,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:04:41,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:04:41,005 INFO L87 Difference]: Start difference. First operand 7557 states and 12637 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:42,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:42,595 INFO L93 Difference]: Finished difference Result 25135 states and 43724 transitions. [2024-11-28 05:04:42,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:04:42,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 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 99 [2024-11-28 05:04:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:42,761 INFO L225 Difference]: With dead ends: 25135 [2024-11-28 05:04:42,761 INFO L226 Difference]: Without dead ends: 17591 [2024-11-28 05:04:42,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:42,798 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 578 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:42,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1543 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:04:42,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17591 states. [2024-11-28 05:04:44,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17591 to 15956. [2024-11-28 05:04:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15956 states, 14046 states have (on average 1.6119179837676207) internal successors, (22641), 14714 states have internal predecessors, (22641), 853 states have call successors, (853), 391 states have call predecessors, (853), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2024-11-28 05:04:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15956 states to 15956 states and 28441 transitions. [2024-11-28 05:04:44,593 INFO L78 Accepts]: Start accepts. Automaton has 15956 states and 28441 transitions. Word has length 99 [2024-11-28 05:04:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:44,595 INFO L471 AbstractCegarLoop]: Abstraction has 15956 states and 28441 transitions. [2024-11-28 05:04:44,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 15956 states and 28441 transitions. [2024-11-28 05:04:44,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 05:04:44,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:44,608 INFO L218 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] [2024-11-28 05:04:44,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:04:44,608 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:44,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:44,609 INFO L85 PathProgramCache]: Analyzing trace with hash 176543141, now seen corresponding path program 1 times [2024-11-28 05:04:44,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:44,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298564521] [2024-11-28 05:04:44,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:44,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298564521] [2024-11-28 05:04:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298564521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:44,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:44,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:04:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468064161] [2024-11-28 05:04:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:44,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:04:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:44,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:04:44,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:04:44,789 INFO L87 Difference]: Start difference. First operand 15956 states and 28441 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:47,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:47,639 INFO L93 Difference]: Finished difference Result 53284 states and 101358 transitions. [2024-11-28 05:04:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:04:47,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 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 99 [2024-11-28 05:04:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:47,882 INFO L225 Difference]: With dead ends: 53284 [2024-11-28 05:04:47,883 INFO L226 Difference]: Without dead ends: 37341 [2024-11-28 05:04:47,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:47,963 INFO L435 NwaCegarLoop]: 387 mSDtfsCounter, 635 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:47,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1535 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:04:48,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37341 states. [2024-11-28 05:04:50,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37341 to 35133. [2024-11-28 05:04:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35133 states, 30677 states have (on average 1.6256152818072171) internal successors, (49869), 32739 states have internal predecessors, (49869), 1621 states have call successors, (1621), 775 states have call predecessors, (1621), 2834 states have return successors, (18003), 1746 states have call predecessors, (18003), 1619 states have call successors, (18003) [2024-11-28 05:04:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35133 states to 35133 states and 69493 transitions. [2024-11-28 05:04:50,935 INFO L78 Accepts]: Start accepts. Automaton has 35133 states and 69493 transitions. Word has length 99 [2024-11-28 05:04:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:50,938 INFO L471 AbstractCegarLoop]: Abstraction has 35133 states and 69493 transitions. [2024-11-28 05:04:50,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:50,939 INFO L276 IsEmpty]: Start isEmpty. Operand 35133 states and 69493 transitions. [2024-11-28 05:04:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 05:04:50,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:50,961 INFO L218 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] [2024-11-28 05:04:50,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:04:50,961 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:50,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:50,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1900793757, now seen corresponding path program 1 times [2024-11-28 05:04:50,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:50,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175260573] [2024-11-28 05:04:50,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:50,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:51,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:51,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175260573] [2024-11-28 05:04:51,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175260573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:51,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:51,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:04:51,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843782931] [2024-11-28 05:04:51,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:51,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:04:51,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:51,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:04:51,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:04:51,137 INFO L87 Difference]: Start difference. First operand 35133 states and 69493 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:04:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:55,615 INFO L93 Difference]: Finished difference Result 116875 states and 256388 transitions. [2024-11-28 05:04:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:04:55,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 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 99 [2024-11-28 05:04:55,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:56,230 INFO L225 Difference]: With dead ends: 116875 [2024-11-28 05:04:56,230 INFO L226 Difference]: Without dead ends: 81755 [2024-11-28 05:04:56,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:56,383 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 600 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:56,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1523 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:04:56,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81755 states. [2024-11-28 05:05:03,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81755 to 78398. [2024-11-28 05:05:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78398 states, 67456 states have (on average 1.6301737428842504) internal successors, (109965), 73764 states have internal predecessors, (109965), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 7848 states have return successors, (68627), 3346 states have call predecessors, (68627), 3091 states have call successors, (68627) [2024-11-28 05:05:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78398 states to 78398 states and 181685 transitions. [2024-11-28 05:05:04,399 INFO L78 Accepts]: Start accepts. Automaton has 78398 states and 181685 transitions. Word has length 99 [2024-11-28 05:05:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:05:04,400 INFO L471 AbstractCegarLoop]: Abstraction has 78398 states and 181685 transitions. [2024-11-28 05:05:04,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:05:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 78398 states and 181685 transitions. [2024-11-28 05:05:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 05:05:04,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:05:04,443 INFO L218 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] [2024-11-28 05:05:04,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:05:04,444 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:05:04,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:04,445 INFO L85 PathProgramCache]: Analyzing trace with hash -166689307, now seen corresponding path program 1 times [2024-11-28 05:05:04,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:04,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676396884] [2024-11-28 05:05:04,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:05:04,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:04,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676396884] [2024-11-28 05:05:04,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676396884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:04,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:04,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:05:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637161778] [2024-11-28 05:05:04,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:04,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:05:04,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:04,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:05:04,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:05:04,609 INFO L87 Difference]: Start difference. First operand 78398 states and 181685 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)