./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label18.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_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/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_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/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_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/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 194fbdc3b3886612fc58320fafee97b7b69b69e44501245b99f854c5cffd6315 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:14:12,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:14:13,056 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:14:13,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:14:13,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:14:13,099 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:14:13,100 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:14:13,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:14:13,101 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:14:13,102 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:14:13,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:14:13,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:14:13,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:14:13,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:14:13,103 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:14:13,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:14:13,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:14:13,104 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:14:13,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:14:13,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:14:13,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:14:13,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:14:13,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:14:13,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:14:13,105 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:14:13,105 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:14:13,105 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:14:13,105 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:14:13,106 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:14:13,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:14:13,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:14:13,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:14:13,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:13,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:14:13,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:14:13,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:14:13,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:14:13,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:13,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:14:13,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:14:13,108 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:14:13,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:14:13,108 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:14:13,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:14:13,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:14:13,108 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:14:13,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:14:13,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:14:13,109 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_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/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 -> 194fbdc3b3886612fc58320fafee97b7b69b69e44501245b99f854c5cffd6315 [2024-11-28 05:14:13,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:14:13,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:14:13,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:14:13,496 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:14:13,497 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:14:13,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem13_label18.c [2024-11-28 05:14:16,539 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/data/e3d9a2989/6532a3e8771844b1855e4d4e076bae31/FLAG70df695bc [2024-11-28 05:14:17,442 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:14:17,443 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/sv-benchmarks/c/eca-rers2012/Problem13_label18.c [2024-11-28 05:14:17,479 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/data/e3d9a2989/6532a3e8771844b1855e4d4e076bae31/FLAG70df695bc [2024-11-28 05:14:17,501 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/data/e3d9a2989/6532a3e8771844b1855e4d4e076bae31 [2024-11-28 05:14:17,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:14:17,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:14:17,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:14:17,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:14:17,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:14:17,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:14:17" (1/1) ... [2024-11-28 05:14:17,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@775ed516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:17, skipping insertion in model container [2024-11-28 05:14:17,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:14:17" (1/1) ... [2024-11-28 05:14:17,661 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:14:17,956 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_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/sv-benchmarks/c/eca-rers2012/Problem13_label18.c[8933,8946] [2024-11-28 05:14:18,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:14:18,970 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:14:19,013 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_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/sv-benchmarks/c/eca-rers2012/Problem13_label18.c[8933,8946] [2024-11-28 05:14:19,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:14:19,697 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:14:19,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19 WrapperNode [2024-11-28 05:14:19,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:14:19,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:14:19,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:14:19,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:14:19,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:19,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:20,337 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-28 05:14:20,338 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:14:20,340 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:14:20,340 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:14:20,340 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:14:20,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:20,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:20,455 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:20,869 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 05:14:20,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:20,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:21,092 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:21,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:21,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:21,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:21,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:21,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:14:21,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:14:21,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:14:21,266 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:14:21,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (1/1) ... [2024-11-28 05:14:21,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:21,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:21,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:14:21,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:14:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:14:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:14:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:14:21,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:14:21,419 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:14:21,421 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:14:29,682 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-28 05:14:29,682 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:14:29,735 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:14:29,739 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:14:29,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:14:29 BoogieIcfgContainer [2024-11-28 05:14:29,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:14:29,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:14:29,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:14:29,752 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:14:29,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:14:17" (1/3) ... [2024-11-28 05:14:29,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79139d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:14:29, skipping insertion in model container [2024-11-28 05:14:29,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:19" (2/3) ... [2024-11-28 05:14:29,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79139d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:14:29, skipping insertion in model container [2024-11-28 05:14:29,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:14:29" (3/3) ... [2024-11-28 05:14:29,757 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label18.c [2024-11-28 05:14:29,778 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:14:29,783 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label18.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:14:29,915 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:14:29,931 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;@49a3b367, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:14:29,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:14:29,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:29,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:14:29,954 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:29,955 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] [2024-11-28 05:14:29,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:29,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:29,962 INFO L85 PathProgramCache]: Analyzing trace with hash -696204111, now seen corresponding path program 1 times [2024-11-28 05:14:29,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:29,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073727332] [2024-11-28 05:14:29,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:29,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:31,048 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 05:14:31,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073727332] [2024-11-28 05:14:31,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073727332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:31,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:31,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:14:31,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535646662] [2024-11-28 05:14:31,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:31,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:14:31,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:31,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:14:31,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:14:31,093 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:40,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:40,351 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2024-11-28 05:14:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:14:40,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-28 05:14:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:40,394 INFO L225 Difference]: With dead ends: 3829 [2024-11-28 05:14:40,397 INFO L226 Difference]: Without dead ends: 2664 [2024-11-28 05:14:40,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:14:40,412 INFO L435 NwaCegarLoop]: 761 mSDtfsCounter, 2667 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2667 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:40,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2667 Valid, 1067 Invalid, 5853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-28 05:14:40,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2024-11-28 05:14:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2024-11-28 05:14:40,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2024-11-28 05:14:40,590 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 63 [2024-11-28 05:14:40,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:40,592 INFO L471 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2024-11-28 05:14:40,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2024-11-28 05:14:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 05:14:40,603 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:40,603 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:40,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:14:40,604 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:40,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:40,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1618212313, now seen corresponding path program 1 times [2024-11-28 05:14:40,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:40,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136763826] [2024-11-28 05:14:40,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:40,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:41,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:41,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136763826] [2024-11-28 05:14:41,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136763826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:41,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:41,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:14:41,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056706618] [2024-11-28 05:14:41,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:41,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:14:41,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:41,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:14:41,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:14:41,234 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:49,824 INFO L93 Difference]: Finished difference Result 7864 states and 12669 transitions. [2024-11-28 05:14:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:14:49,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2024-11-28 05:14:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:49,855 INFO L225 Difference]: With dead ends: 7864 [2024-11-28 05:14:49,855 INFO L226 Difference]: Without dead ends: 5990 [2024-11-28 05:14:49,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:14:49,862 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 1693 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 5283 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1693 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 6126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 5283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:49,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1693 Valid, 1069 Invalid, 6126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 5283 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-28 05:14:49,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2024-11-28 05:14:50,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5859. [2024-11-28 05:14:50,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4452031410037556) internal successors, (8466), 5858 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8466 transitions. [2024-11-28 05:14:50,139 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8466 transitions. Word has length 188 [2024-11-28 05:14:50,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:50,142 INFO L471 AbstractCegarLoop]: Abstraction has 5859 states and 8466 transitions. [2024-11-28 05:14:50,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:50,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8466 transitions. [2024-11-28 05:14:50,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-28 05:14:50,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:50,156 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 05:14:50,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:14:50,156 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:50,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:50,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1994827739, now seen corresponding path program 1 times [2024-11-28 05:14:50,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:50,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314151652] [2024-11-28 05:14:50,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:50,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 05:14:50,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:50,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314151652] [2024-11-28 05:14:50,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314151652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:50,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:50,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:14:50,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696981892] [2024-11-28 05:14:50,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:50,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:14:50,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:50,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:14:50,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:14:50,610 INFO L87 Difference]: Start difference. First operand 5859 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:55,431 INFO L93 Difference]: Finished difference Result 15685 states and 23389 transitions. [2024-11-28 05:14:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:14:55,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2024-11-28 05:14:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:55,475 INFO L225 Difference]: With dead ends: 15685 [2024-11-28 05:14:55,476 INFO L226 Difference]: Without dead ends: 10615 [2024-11-28 05:14:55,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:14:55,484 INFO L435 NwaCegarLoop]: 784 mSDtfsCounter, 918 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:55,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 916 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-28 05:14:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2024-11-28 05:14:55,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10608. [2024-11-28 05:14:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3551428302064674) internal successors, (14374), 10607 states have internal predecessors, (14374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:55,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14374 transitions. [2024-11-28 05:14:55,699 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14374 transitions. Word has length 230 [2024-11-28 05:14:55,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:55,701 INFO L471 AbstractCegarLoop]: Abstraction has 10608 states and 14374 transitions. [2024-11-28 05:14:55,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:14:55,702 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14374 transitions. [2024-11-28 05:14:55,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-28 05:14:55,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:55,708 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:14:55,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:14:55,708 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:55,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:55,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1064647934, now seen corresponding path program 1 times [2024-11-28 05:14:55,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:55,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652797105] [2024-11-28 05:14:55,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:55,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 05:14:56,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:56,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652797105] [2024-11-28 05:14:56,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652797105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:56,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:56,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:14:56,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649237369] [2024-11-28 05:14:56,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:56,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:14:56,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:56,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:14:56,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:14:56,088 INFO L87 Difference]: Start difference. First operand 10608 states and 14374 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:00,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:00,679 INFO L93 Difference]: Finished difference Result 28349 states and 39239 transitions. [2024-11-28 05:15:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:15:00,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2024-11-28 05:15:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:00,730 INFO L225 Difference]: With dead ends: 28349 [2024-11-28 05:15:00,730 INFO L226 Difference]: Without dead ends: 18530 [2024-11-28 05:15:00,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:00,745 INFO L435 NwaCegarLoop]: 449 mSDtfsCounter, 907 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2871 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:00,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 614 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2871 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 05:15:00,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18530 states. [2024-11-28 05:15:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18530 to 18523. [2024-11-28 05:15:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3250188964474678) internal successors, (24542), 18522 states have internal predecessors, (24542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24542 transitions. [2024-11-28 05:15:01,114 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24542 transitions. Word has length 244 [2024-11-28 05:15:01,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:01,115 INFO L471 AbstractCegarLoop]: Abstraction has 18523 states and 24542 transitions. [2024-11-28 05:15:01,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:01,116 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24542 transitions. [2024-11-28 05:15:01,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-28 05:15:01,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:01,128 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:01,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:15:01,128 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:01,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:01,129 INFO L85 PathProgramCache]: Analyzing trace with hash -372692093, now seen corresponding path program 1 times [2024-11-28 05:15:01,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:01,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523132496] [2024-11-28 05:15:01,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:01,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:01,570 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-28 05:15:01,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:01,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523132496] [2024-11-28 05:15:01,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523132496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:01,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:01,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:15:01,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957954862] [2024-11-28 05:15:01,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:01,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:15:01,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:01,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:15:01,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:01,572 INFO L87 Difference]: Start difference. First operand 18523 states and 24542 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:06,435 INFO L93 Difference]: Finished difference Result 51208 states and 68744 transitions. [2024-11-28 05:15:06,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:15:06,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 281 [2024-11-28 05:15:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:06,519 INFO L225 Difference]: With dead ends: 51208 [2024-11-28 05:15:06,519 INFO L226 Difference]: Without dead ends: 33474 [2024-11-28 05:15:06,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:06,537 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 860 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:06,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 986 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 05:15:06,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33474 states. [2024-11-28 05:15:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33474 to 31109. [2024-11-28 05:15:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31109 states, 31108 states have (on average 1.2544361579015044) internal successors, (39023), 31108 states have internal predecessors, (39023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31109 states to 31109 states and 39023 transitions. [2024-11-28 05:15:07,047 INFO L78 Accepts]: Start accepts. Automaton has 31109 states and 39023 transitions. Word has length 281 [2024-11-28 05:15:07,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:07,047 INFO L471 AbstractCegarLoop]: Abstraction has 31109 states and 39023 transitions. [2024-11-28 05:15:07,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 31109 states and 39023 transitions. [2024-11-28 05:15:07,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-28 05:15:07,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:07,058 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 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 05:15:07,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:15:07,058 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:07,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1436730698, now seen corresponding path program 1 times [2024-11-28 05:15:07,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:07,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460029445] [2024-11-28 05:15:07,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 05:15:07,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:07,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460029445] [2024-11-28 05:15:07,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460029445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:07,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:07,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:15:07,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179792475] [2024-11-28 05:15:07,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:07,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:15:07,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:07,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:15:07,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:07,410 INFO L87 Difference]: Start difference. First operand 31109 states and 39023 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:12,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:12,452 INFO L93 Difference]: Finished difference Result 87412 states and 110601 transitions. [2024-11-28 05:15:12,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:15:12,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2024-11-28 05:15:12,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:12,604 INFO L225 Difference]: With dead ends: 87412 [2024-11-28 05:15:12,605 INFO L226 Difference]: Without dead ends: 57092 [2024-11-28 05:15:12,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:12,638 INFO L435 NwaCegarLoop]: 792 mSDtfsCounter, 887 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:12,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 909 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 05:15:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57092 states. [2024-11-28 05:15:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57092 to 56294. [2024-11-28 05:15:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56294 states, 56293 states have (on average 1.2004512106300962) internal successors, (67577), 56293 states have internal predecessors, (67577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56294 states to 56294 states and 67577 transitions. [2024-11-28 05:15:13,556 INFO L78 Accepts]: Start accepts. Automaton has 56294 states and 67577 transitions. Word has length 303 [2024-11-28 05:15:13,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:13,558 INFO L471 AbstractCegarLoop]: Abstraction has 56294 states and 67577 transitions. [2024-11-28 05:15:13,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:13,558 INFO L276 IsEmpty]: Start isEmpty. Operand 56294 states and 67577 transitions. [2024-11-28 05:15:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-28 05:15:13,567 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:13,567 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:13,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:15:13,567 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:13,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:13,568 INFO L85 PathProgramCache]: Analyzing trace with hash 725987894, now seen corresponding path program 1 times [2024-11-28 05:15:13,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:13,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894469901] [2024-11-28 05:15:13,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:13,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 05:15:14,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:14,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894469901] [2024-11-28 05:15:14,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894469901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:14,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:14,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:15:14,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415424688] [2024-11-28 05:15:14,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:14,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:15:14,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:14,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:15:14,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:15:14,222 INFO L87 Difference]: Start difference. First operand 56294 states and 67577 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:22,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:22,753 INFO L93 Difference]: Finished difference Result 151374 states and 183845 transitions. [2024-11-28 05:15:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:15:22,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2024-11-28 05:15:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:22,916 INFO L225 Difference]: With dead ends: 151374 [2024-11-28 05:15:22,916 INFO L226 Difference]: Without dead ends: 95869 [2024-11-28 05:15:22,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:15:22,969 INFO L435 NwaCegarLoop]: 500 mSDtfsCounter, 1747 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 6069 mSolverCounterSat, 1182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 7251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1182 IncrementalHoareTripleChecker+Valid, 6069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:22,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 700 Invalid, 7251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1182 Valid, 6069 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-28 05:15:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95869 states. [2024-11-28 05:15:24,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95869 to 95739. [2024-11-28 05:15:24,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95739 states, 95738 states have (on average 1.1949696045457394) internal successors, (114404), 95738 states have internal predecessors, (114404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95739 states to 95739 states and 114404 transitions. [2024-11-28 05:15:24,398 INFO L78 Accepts]: Start accepts. Automaton has 95739 states and 114404 transitions. Word has length 351 [2024-11-28 05:15:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:24,399 INFO L471 AbstractCegarLoop]: Abstraction has 95739 states and 114404 transitions. [2024-11-28 05:15:24,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand 95739 states and 114404 transitions. [2024-11-28 05:15:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-28 05:15:24,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:24,409 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 05:15:24,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:15:24,410 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:24,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1617208669, now seen corresponding path program 1 times [2024-11-28 05:15:24,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:24,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103569886] [2024-11-28 05:15:24,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:24,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-28 05:15:25,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:25,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103569886] [2024-11-28 05:15:25,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103569886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:25,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:25,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:15:25,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138124850] [2024-11-28 05:15:25,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:25,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:15:25,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:25,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:15:25,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:25,241 INFO L87 Difference]: Start difference. First operand 95739 states and 114404 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:30,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:30,167 INFO L93 Difference]: Finished difference Result 177308 states and 213524 transitions. [2024-11-28 05:15:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:15:30,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 360 [2024-11-28 05:15:30,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:30,345 INFO L225 Difference]: With dead ends: 177308 [2024-11-28 05:15:30,345 INFO L226 Difference]: Without dead ends: 95749 [2024-11-28 05:15:30,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:30,408 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:30,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 05:15:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95749 states. [2024-11-28 05:15:31,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95749 to 95739. [2024-11-28 05:15:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95739 states, 95738 states have (on average 1.1940817648164783) internal successors, (114319), 95738 states have internal predecessors, (114319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95739 states to 95739 states and 114319 transitions. [2024-11-28 05:15:31,893 INFO L78 Accepts]: Start accepts. Automaton has 95739 states and 114319 transitions. Word has length 360 [2024-11-28 05:15:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:31,894 INFO L471 AbstractCegarLoop]: Abstraction has 95739 states and 114319 transitions. [2024-11-28 05:15:31,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 95739 states and 114319 transitions. [2024-11-28 05:15:31,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-28 05:15:31,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:31,906 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:31,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:15:31,906 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:31,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash -609588181, now seen corresponding path program 1 times [2024-11-28 05:15:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:31,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449012120] [2024-11-28 05:15:31,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:31,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 290 proven. 113 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 05:15:34,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:34,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449012120] [2024-11-28 05:15:34,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449012120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:34,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975995233] [2024-11-28 05:15:34,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:34,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:34,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:34,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:34,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:15:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:34,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:15:34,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-28 05:15:34,782 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:34,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975995233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:34,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:15:34,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-28 05:15:34,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324436593] [2024-11-28 05:15:34,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:34,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:15:34,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:34,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:15:34,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:15:34,786 INFO L87 Difference]: Start difference. First operand 95739 states and 114319 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:39,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:39,511 INFO L93 Difference]: Finished difference Result 189900 states and 226691 transitions. [2024-11-28 05:15:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:15:39,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 389 [2024-11-28 05:15:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:39,599 INFO L225 Difference]: With dead ends: 189900 [2024-11-28 05:15:39,599 INFO L226 Difference]: Without dead ends: 94950 [2024-11-28 05:15:39,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:15:39,636 INFO L435 NwaCegarLoop]: 1366 mSDtfsCounter, 1123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:39,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1448 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 05:15:39,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94950 states. [2024-11-28 05:15:40,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94950 to 94949. [2024-11-28 05:15:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94949 states, 94948 states have (on average 1.1426254370813498) internal successors, (108490), 94948 states have internal predecessors, (108490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94949 states to 94949 states and 108490 transitions. [2024-11-28 05:15:40,528 INFO L78 Accepts]: Start accepts. Automaton has 94949 states and 108490 transitions. Word has length 389 [2024-11-28 05:15:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:40,528 INFO L471 AbstractCegarLoop]: Abstraction has 94949 states and 108490 transitions. [2024-11-28 05:15:40,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 94949 states and 108490 transitions. [2024-11-28 05:15:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-28 05:15:40,541 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:40,541 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:40,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:15:40,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 05:15:40,742 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:40,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:40,743 INFO L85 PathProgramCache]: Analyzing trace with hash 407632997, now seen corresponding path program 1 times [2024-11-28 05:15:40,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:40,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397769709] [2024-11-28 05:15:40,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:40,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:41,721 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-28 05:15:41,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:41,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397769709] [2024-11-28 05:15:41,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397769709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:41,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:41,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:15:41,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992367571] [2024-11-28 05:15:41,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:41,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:15:41,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:41,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:15:41,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:41,724 INFO L87 Difference]: Start difference. First operand 94949 states and 108490 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:47,010 INFO L93 Difference]: Finished difference Result 221391 states and 255679 transitions. [2024-11-28 05:15:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:15:47,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 457 [2024-11-28 05:15:47,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:47,140 INFO L225 Difference]: With dead ends: 221391 [2024-11-28 05:15:47,140 INFO L226 Difference]: Without dead ends: 127231 [2024-11-28 05:15:47,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:47,188 INFO L435 NwaCegarLoop]: 1786 mSDtfsCounter, 780 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:47,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1940 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 05:15:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127231 states. [2024-11-28 05:15:48,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127231 to 124852. [2024-11-28 05:15:48,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124852 states, 124851 states have (on average 1.1174279741451811) internal successors, (139512), 124851 states have internal predecessors, (139512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124852 states to 124852 states and 139512 transitions. [2024-11-28 05:15:49,055 INFO L78 Accepts]: Start accepts. Automaton has 124852 states and 139512 transitions. Word has length 457 [2024-11-28 05:15:49,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:49,056 INFO L471 AbstractCegarLoop]: Abstraction has 124852 states and 139512 transitions. [2024-11-28 05:15:49,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:49,057 INFO L276 IsEmpty]: Start isEmpty. Operand 124852 states and 139512 transitions. [2024-11-28 05:15:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-28 05:15:49,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:49,072 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:49,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:15:49,072 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:49,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:49,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1993380115, now seen corresponding path program 1 times [2024-11-28 05:15:49,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:49,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602767695] [2024-11-28 05:15:49,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:49,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 362 proven. 110 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 05:15:51,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:51,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602767695] [2024-11-28 05:15:51,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602767695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:51,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759253486] [2024-11-28 05:15:51,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:51,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:51,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:51,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:51,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:15:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:51,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:15:51,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-11-28 05:15:51,418 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:51,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759253486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:51,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:15:51,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-28 05:15:51,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096081285] [2024-11-28 05:15:51,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:51,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:15:51,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:51,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:15:51,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:15:51,420 INFO L87 Difference]: Start difference. First operand 124852 states and 139512 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:56,406 INFO L93 Difference]: Finished difference Result 279617 states and 315744 transitions. [2024-11-28 05:15:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:15:56,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 479 [2024-11-28 05:15:56,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:56,550 INFO L225 Difference]: With dead ends: 279617 [2024-11-28 05:15:56,550 INFO L226 Difference]: Without dead ends: 155554 [2024-11-28 05:15:56,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:15:56,605 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 976 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 999 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 999 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:56,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 789 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [999 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 05:15:56,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155554 states. [2024-11-28 05:15:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155554 to 153959. [2024-11-28 05:15:58,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153959 states, 153958 states have (on average 1.1226828095974226) internal successors, (172846), 153958 states have internal predecessors, (172846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153959 states to 153959 states and 172846 transitions. [2024-11-28 05:15:59,043 INFO L78 Accepts]: Start accepts. Automaton has 153959 states and 172846 transitions. Word has length 479 [2024-11-28 05:15:59,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:59,043 INFO L471 AbstractCegarLoop]: Abstraction has 153959 states and 172846 transitions. [2024-11-28 05:15:59,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:15:59,044 INFO L276 IsEmpty]: Start isEmpty. Operand 153959 states and 172846 transitions. [2024-11-28 05:15:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-28 05:15:59,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:59,060 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:59,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:15:59,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 05:15:59,261 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:59,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:59,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1392152019, now seen corresponding path program 1 times [2024-11-28 05:15:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:59,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248171309] [2024-11-28 05:15:59,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:59,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 921 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-28 05:16:00,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248171309] [2024-11-28 05:16:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248171309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:00,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:00,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:16:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647885696] [2024-11-28 05:16:00,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:00,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:16:00,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:00,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:16:00,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:16:00,093 INFO L87 Difference]: Start difference. First operand 153959 states and 172846 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:05,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:16:05,689 INFO L93 Difference]: Finished difference Result 307136 states and 344913 transitions. [2024-11-28 05:16:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:16:05,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 576 [2024-11-28 05:16:05,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:16:05,871 INFO L225 Difference]: With dead ends: 307136 [2024-11-28 05:16:05,872 INFO L226 Difference]: Without dead ends: 153966 [2024-11-28 05:16:05,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:16:05,923 INFO L435 NwaCegarLoop]: 1423 mSDtfsCounter, 938 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:16:05,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1515 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 05:16:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153966 states. [2024-11-28 05:16:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153966 to 153952. [2024-11-28 05:16:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153952 states, 153951 states have (on average 1.0902949639820463) internal successors, (167852), 153951 states have internal predecessors, (167852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153952 states to 153952 states and 167852 transitions. [2024-11-28 05:16:07,812 INFO L78 Accepts]: Start accepts. Automaton has 153952 states and 167852 transitions. Word has length 576 [2024-11-28 05:16:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:16:07,813 INFO L471 AbstractCegarLoop]: Abstraction has 153952 states and 167852 transitions. [2024-11-28 05:16:07,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:07,813 INFO L276 IsEmpty]: Start isEmpty. Operand 153952 states and 167852 transitions. [2024-11-28 05:16:07,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2024-11-28 05:16:07,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:16:07,833 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:07,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:16:07,833 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:16:07,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:07,834 INFO L85 PathProgramCache]: Analyzing trace with hash -137971810, now seen corresponding path program 1 times [2024-11-28 05:16:07,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:07,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569481068] [2024-11-28 05:16:07,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:07,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 715 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2024-11-28 05:16:09,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:09,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569481068] [2024-11-28 05:16:09,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569481068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:09,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:09,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:16:09,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89926375] [2024-11-28 05:16:09,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:09,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:16:09,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:09,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:16:09,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:16:09,217 INFO L87 Difference]: Start difference. First operand 153952 states and 167852 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:14,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:16:14,350 INFO L93 Difference]: Finished difference Result 296062 states and 324359 transitions. [2024-11-28 05:16:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:16:14,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 617 [2024-11-28 05:16:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:16:14,509 INFO L225 Difference]: With dead ends: 296062 [2024-11-28 05:16:14,510 INFO L226 Difference]: Without dead ends: 162582 [2024-11-28 05:16:14,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:16:14,551 INFO L435 NwaCegarLoop]: 370 mSDtfsCounter, 1189 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 3113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:16:14,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 384 Invalid, 3113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [849 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 05:16:14,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162582 states. [2024-11-28 05:16:16,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162582 to 162582. [2024-11-28 05:16:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162582 states, 162581 states have (on average 1.085157552235501) internal successors, (176426), 162581 states have internal predecessors, (176426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:16,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162582 states to 162582 states and 176426 transitions. [2024-11-28 05:16:16,339 INFO L78 Accepts]: Start accepts. Automaton has 162582 states and 176426 transitions. Word has length 617 [2024-11-28 05:16:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:16:16,339 INFO L471 AbstractCegarLoop]: Abstraction has 162582 states and 176426 transitions. [2024-11-28 05:16:16,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 162582 states and 176426 transitions. [2024-11-28 05:16:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2024-11-28 05:16:16,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:16:16,362 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:16,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:16:16,362 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:16:16,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:16,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2144326472, now seen corresponding path program 1 times [2024-11-28 05:16:16,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:16,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328492788] [2024-11-28 05:16:16,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:16,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-28 05:16:17,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:17,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328492788] [2024-11-28 05:16:17,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328492788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:17,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:17,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:16:17,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839422979] [2024-11-28 05:16:17,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:17,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:16:17,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:17,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:16:17,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:16:17,452 INFO L87 Difference]: Start difference. First operand 162582 states and 176426 transitions. Second operand has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:27,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:16:27,054 INFO L93 Difference]: Finished difference Result 424543 states and 462137 transitions. [2024-11-28 05:16:27,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:16:27,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 667 [2024-11-28 05:16:27,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:16:27,325 INFO L225 Difference]: With dead ends: 424543 [2024-11-28 05:16:27,325 INFO L226 Difference]: Without dead ends: 262750 [2024-11-28 05:16:27,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:16:27,382 INFO L435 NwaCegarLoop]: 660 mSDtfsCounter, 1731 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 6483 mSolverCounterSat, 1181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 7664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1181 IncrementalHoareTripleChecker+Valid, 6483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:16:27,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 932 Invalid, 7664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1181 Valid, 6483 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-28 05:16:27,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262750 states. [2024-11-28 05:16:30,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262750 to 249193. [2024-11-28 05:16:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249193 states, 249192 states have (on average 1.0804640598414075) internal successors, (269243), 249192 states have internal predecessors, (269243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249193 states to 249193 states and 269243 transitions. [2024-11-28 05:16:30,683 INFO L78 Accepts]: Start accepts. Automaton has 249193 states and 269243 transitions. Word has length 667 [2024-11-28 05:16:30,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:16:30,684 INFO L471 AbstractCegarLoop]: Abstraction has 249193 states and 269243 transitions. [2024-11-28 05:16:30,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand 249193 states and 269243 transitions. [2024-11-28 05:16:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2024-11-28 05:16:30,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:16:30,733 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:30,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:16:30,733 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:16:30,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1937828288, now seen corresponding path program 1 times [2024-11-28 05:16:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:30,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803700425] [2024-11-28 05:16:30,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:30,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 600 proven. 110 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-11-28 05:16:32,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:32,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803700425] [2024-11-28 05:16:32,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803700425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:32,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957716813] [2024-11-28 05:16:32,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:32,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:32,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:32,869 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:32,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:16:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:33,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:16:33,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-28 05:16:33,293 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:16:33,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957716813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:33,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:16:33,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-28 05:16:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256814760] [2024-11-28 05:16:33,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:33,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:16:33,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:33,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:16:33,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:16:33,297 INFO L87 Difference]: Start difference. First operand 249193 states and 269243 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:16:39,893 INFO L93 Difference]: Finished difference Result 529065 states and 572793 transitions. [2024-11-28 05:16:39,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:16:39,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 727 [2024-11-28 05:16:39,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:16:40,675 INFO L225 Difference]: With dead ends: 529065 [2024-11-28 05:16:40,675 INFO L226 Difference]: Without dead ends: 301129 [2024-11-28 05:16:40,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:16:40,759 INFO L435 NwaCegarLoop]: 1628 mSDtfsCounter, 916 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:16:40,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1740 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 05:16:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301129 states. [2024-11-28 05:16:43,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301129 to 257040. [2024-11-28 05:16:43,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257040 states, 257039 states have (on average 1.0725103972548913) internal successors, (275677), 257039 states have internal predecessors, (275677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257040 states to 257040 states and 275677 transitions. [2024-11-28 05:16:43,902 INFO L78 Accepts]: Start accepts. Automaton has 257040 states and 275677 transitions. Word has length 727 [2024-11-28 05:16:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:16:43,902 INFO L471 AbstractCegarLoop]: Abstraction has 257040 states and 275677 transitions. [2024-11-28 05:16:43,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:43,902 INFO L276 IsEmpty]: Start isEmpty. Operand 257040 states and 275677 transitions. [2024-11-28 05:16:44,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2024-11-28 05:16:44,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:16:44,460 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:44,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:16:44,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a5c0465-ecc7-4ac0-82aa-0e58acfe2bb3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 05:16:44,661 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:16:44,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:44,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2079870455, now seen corresponding path program 1 times [2024-11-28 05:16:44,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:44,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010331606] [2024-11-28 05:16:44,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:44,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 690 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-28 05:16:45,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:45,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010331606] [2024-11-28 05:16:45,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010331606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:45,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:45,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:16:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472708687] [2024-11-28 05:16:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:45,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:16:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:45,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:16:45,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:16:45,783 INFO L87 Difference]: Start difference. First operand 257040 states and 275677 transitions. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:16:52,706 INFO L93 Difference]: Finished difference Result 546381 states and 588686 transitions. [2024-11-28 05:16:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:16:52,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 740 [2024-11-28 05:16:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:16:53,011 INFO L225 Difference]: With dead ends: 546381 [2024-11-28 05:16:53,011 INFO L226 Difference]: Without dead ends: 312961 [2024-11-28 05:16:53,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:16:53,056 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 761 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 1021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 3418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1021 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:16:53,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 616 Invalid, 3418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1021 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-28 05:16:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312961 states.