./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label37.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_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/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_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label37.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/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_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/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 a60dbc2f79c578f373d1608befa1a0be5fe97eed98271e53ccf8c768ad5b972e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:20:01,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:20:01,270 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:20:01,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:20:01,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:20:01,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:20:01,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:20:01,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:20:01,306 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:20:01,306 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:20:01,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:20:01,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:20:01,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:20:01,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:20:01,307 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:20:01,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:20:01,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:20:01,307 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:20:01,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:20:01,308 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:20:01,308 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:20:01,308 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:20:01,308 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:20:01,308 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:20:01,308 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:20:01,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:20:01,308 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:20:01,308 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:20:01,309 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:20:01,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:20:01,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:20:01,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:20:01,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:01,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:20:01,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:20:01,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:20:01,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:20:01,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:01,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:20:01,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:20:01,310 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:20:01,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:20:01,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:20:01,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:20:01,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:20:01,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:20:01,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:20:01,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:20:01,311 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_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/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 -> a60dbc2f79c578f373d1608befa1a0be5fe97eed98271e53ccf8c768ad5b972e [2024-11-28 05:20:01,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:20:01,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:20:01,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:20:01,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:20:01,637 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:20:01,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem13_label37.c [2024-11-28 05:20:04,620 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/data/d7bfeed09/37e19972659044458e5550e66bbcb992/FLAG14a15cf0d [2024-11-28 05:20:05,283 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:20:05,284 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/sv-benchmarks/c/eca-rers2012/Problem13_label37.c [2024-11-28 05:20:05,322 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/data/d7bfeed09/37e19972659044458e5550e66bbcb992/FLAG14a15cf0d [2024-11-28 05:20:05,340 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/data/d7bfeed09/37e19972659044458e5550e66bbcb992 [2024-11-28 05:20:05,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:20:05,345 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:20:05,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:20:05,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:20:05,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:20:05,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:20:05" (1/1) ... [2024-11-28 05:20:05,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7ec2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:05, skipping insertion in model container [2024-11-28 05:20:05,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:20:05" (1/1) ... [2024-11-28 05:20:05,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:20:05,792 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_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/sv-benchmarks/c/eca-rers2012/Problem13_label37.c[7700,7713] [2024-11-28 05:20:06,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:20:06,781 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:20:06,823 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_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/sv-benchmarks/c/eca-rers2012/Problem13_label37.c[7700,7713] [2024-11-28 05:20:07,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:20:07,510 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:20:07,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07 WrapperNode [2024-11-28 05:20:07,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:20:07,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:20:07,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:20:07,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:20:07,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:07,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:08,241 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-28 05:20:08,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:20:08,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:20:08,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:20:08,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:20:08,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:08,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:08,345 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:08,605 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 05:20:08,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:08,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:08,907 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:08,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:08,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:08,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:08,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:09,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:20:09,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:20:09,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:20:09,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:20:09,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (1/1) ... [2024-11-28 05:20:09,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:09,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:09,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:20:09,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:20:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:20:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:20:09,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:20:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:20:09,241 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:20:09,245 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:20:17,037 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-28 05:20:17,038 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:20:17,089 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:20:17,089 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:20:17,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:20:17 BoogieIcfgContainer [2024-11-28 05:20:17,089 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:20:17,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:20:17,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:20:17,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:20:17,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:20:05" (1/3) ... [2024-11-28 05:20:17,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7caf6891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:20:17, skipping insertion in model container [2024-11-28 05:20:17,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:07" (2/3) ... [2024-11-28 05:20:17,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7caf6891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:20:17, skipping insertion in model container [2024-11-28 05:20:17,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:20:17" (3/3) ... [2024-11-28 05:20:17,106 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label37.c [2024-11-28 05:20:17,123 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:20:17,127 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label37.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:20:17,225 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:20:17,240 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;@3ce7340e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:20:17,241 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:20:17,252 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 05:20:17,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 05:20:17,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:17,263 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] [2024-11-28 05:20:17,263 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:17,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:17,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1425694346, now seen corresponding path program 1 times [2024-11-28 05:20:17,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222065649] [2024-11-28 05:20:17,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:17,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:17,824 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 05:20:17,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222065649] [2024-11-28 05:20:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222065649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:17,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:17,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:20:17,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054597676] [2024-11-28 05:20:17,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:17,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:17,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:17,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:17,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:17,862 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 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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 05:20:23,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:23,581 INFO L93 Difference]: Finished difference Result 3121 states and 5804 transitions. [2024-11-28 05:20:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:23,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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 54 [2024-11-28 05:20:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:23,606 INFO L225 Difference]: With dead ends: 3121 [2024-11-28 05:20:23,607 INFO L226 Difference]: Without dead ends: 1944 [2024-11-28 05:20:23,613 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 05:20:23,616 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 935 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:23,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 575 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-28 05:20:23,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2024-11-28 05:20:23,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1873. [2024-11-28 05:20:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 1.7393162393162394) internal successors, (3256), 1872 states have internal predecessors, (3256), 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 05:20:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3256 transitions. [2024-11-28 05:20:23,763 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3256 transitions. Word has length 54 [2024-11-28 05:20:23,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:23,765 INFO L471 AbstractCegarLoop]: Abstraction has 1873 states and 3256 transitions. [2024-11-28 05:20:23,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 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 05:20:23,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3256 transitions. [2024-11-28 05:20:23,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 05:20:23,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:23,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:23,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:20:23,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:23,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:23,772 INFO L85 PathProgramCache]: Analyzing trace with hash 916312146, now seen corresponding path program 1 times [2024-11-28 05:20:23,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:23,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192422939] [2024-11-28 05:20:23,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:23,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:24,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:24,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192422939] [2024-11-28 05:20:24,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192422939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:24,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:24,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:20:24,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056807904] [2024-11-28 05:20:24,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:24,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:24,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:24,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:24,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:24,256 INFO L87 Difference]: Start difference. First operand 1873 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 05:20:29,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:29,312 INFO L93 Difference]: Finished difference Result 5351 states and 9369 transitions. [2024-11-28 05:20:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:29,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 119 [2024-11-28 05:20:29,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:29,329 INFO L225 Difference]: With dead ends: 5351 [2024-11-28 05:20:29,329 INFO L226 Difference]: Without dead ends: 3480 [2024-11-28 05:20:29,332 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 05:20:29,333 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:29,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1079 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 05:20:29,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2024-11-28 05:20:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3479. [2024-11-28 05:20:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3478 states have (on average 1.518688901667625) internal successors, (5282), 3478 states have internal predecessors, (5282), 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 05:20:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5282 transitions. [2024-11-28 05:20:29,437 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5282 transitions. Word has length 119 [2024-11-28 05:20:29,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:29,437 INFO L471 AbstractCegarLoop]: Abstraction has 3479 states and 5282 transitions. [2024-11-28 05:20:29,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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 05:20:29,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5282 transitions. [2024-11-28 05:20:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 05:20:29,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:29,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:29,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:20:29,441 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:29,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:29,442 INFO L85 PathProgramCache]: Analyzing trace with hash -717638515, now seen corresponding path program 1 times [2024-11-28 05:20:29,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:29,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407584986] [2024-11-28 05:20:29,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:29,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:29,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:29,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407584986] [2024-11-28 05:20:29,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407584986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:29,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:29,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:20:29,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143829124] [2024-11-28 05:20:29,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:29,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:29,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:29,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:29,662 INFO L87 Difference]: Start difference. First operand 3479 states and 5282 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 05:20:34,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:34,085 INFO L93 Difference]: Finished difference Result 10142 states and 15438 transitions. [2024-11-28 05:20:34,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:34,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 121 [2024-11-28 05:20:34,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:34,113 INFO L225 Difference]: With dead ends: 10142 [2024-11-28 05:20:34,114 INFO L226 Difference]: Without dead ends: 6665 [2024-11-28 05:20:34,119 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 05:20:34,120 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 976 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:34,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 877 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 05:20:34,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2024-11-28 05:20:34,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6657. [2024-11-28 05:20:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6656 states have (on average 1.3728966346153846) internal successors, (9138), 6656 states have internal predecessors, (9138), 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 05:20:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 9138 transitions. [2024-11-28 05:20:34,266 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 9138 transitions. Word has length 121 [2024-11-28 05:20:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:34,267 INFO L471 AbstractCegarLoop]: Abstraction has 6657 states and 9138 transitions. [2024-11-28 05:20:34,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 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 05:20:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 9138 transitions. [2024-11-28 05:20:34,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 05:20:34,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:34,272 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, 1, 1, 1, 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 05:20:34,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:20:34,272 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:34,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash -523925634, now seen corresponding path program 1 times [2024-11-28 05:20:34,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:34,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210059538] [2024-11-28 05:20:34,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:34,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:34,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:34,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210059538] [2024-11-28 05:20:34,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210059538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:34,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:34,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:20:34,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432123848] [2024-11-28 05:20:34,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:34,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:34,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:34,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:34,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:34,471 INFO L87 Difference]: Start difference. First operand 6657 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 05:20:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:38,702 INFO L93 Difference]: Finished difference Result 19637 states and 26969 transitions. [2024-11-28 05:20:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:38,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 127 [2024-11-28 05:20:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:38,740 INFO L225 Difference]: With dead ends: 19637 [2024-11-28 05:20:38,741 INFO L226 Difference]: Without dead ends: 12982 [2024-11-28 05:20:38,749 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 05:20:38,750 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:38,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1163 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 05:20:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2024-11-28 05:20:38,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12175. [2024-11-28 05:20:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12175 states, 12174 states have (on average 1.2529160505996386) internal successors, (15253), 12174 states have internal predecessors, (15253), 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 05:20:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12175 states to 12175 states and 15253 transitions. [2024-11-28 05:20:38,985 INFO L78 Accepts]: Start accepts. Automaton has 12175 states and 15253 transitions. Word has length 127 [2024-11-28 05:20:38,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:38,985 INFO L471 AbstractCegarLoop]: Abstraction has 12175 states and 15253 transitions. [2024-11-28 05:20:38,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 05:20:38,985 INFO L276 IsEmpty]: Start isEmpty. Operand 12175 states and 15253 transitions. [2024-11-28 05:20:38,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 05:20:38,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:38,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:38,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:20:38,989 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:38,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:38,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1324072554, now seen corresponding path program 1 times [2024-11-28 05:20:38,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:38,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686812464] [2024-11-28 05:20:38,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:38,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:39,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:39,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686812464] [2024-11-28 05:20:39,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686812464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:39,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:39,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:20:39,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635063286] [2024-11-28 05:20:39,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:39,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:39,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:39,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:39,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:39,441 INFO L87 Difference]: Start difference. First operand 12175 states and 15253 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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 05:20:43,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:43,156 INFO L93 Difference]: Finished difference Result 25135 states and 31306 transitions. [2024-11-28 05:20:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:43,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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 143 [2024-11-28 05:20:43,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:43,185 INFO L225 Difference]: With dead ends: 25135 [2024-11-28 05:20:43,186 INFO L226 Difference]: Without dead ends: 12962 [2024-11-28 05:20:43,196 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 05:20:43,196 INFO L435 NwaCegarLoop]: 1083 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:43,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1212 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 05:20:43,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2024-11-28 05:20:43,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12962. [2024-11-28 05:20:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12962 states, 12961 states have (on average 1.2379446030398888) internal successors, (16045), 12961 states have internal predecessors, (16045), 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 05:20:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16045 transitions. [2024-11-28 05:20:43,415 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16045 transitions. Word has length 143 [2024-11-28 05:20:43,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:43,415 INFO L471 AbstractCegarLoop]: Abstraction has 12962 states and 16045 transitions. [2024-11-28 05:20:43,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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 05:20:43,415 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16045 transitions. [2024-11-28 05:20:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 05:20:43,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:43,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:43,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:20:43,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:43,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:43,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1155556459, now seen corresponding path program 1 times [2024-11-28 05:20:43,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:43,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065657302] [2024-11-28 05:20:43,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:43,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:43,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:43,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065657302] [2024-11-28 05:20:43,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065657302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:43,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:43,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:20:43,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64245978] [2024-11-28 05:20:43,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:43,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:43,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:43,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:43,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:43,587 INFO L87 Difference]: Start difference. First operand 12962 states and 16045 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 05:20:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:47,816 INFO L93 Difference]: Finished difference Result 31448 states and 39970 transitions. [2024-11-28 05:20:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:47,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 150 [2024-11-28 05:20:47,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:47,858 INFO L225 Difference]: With dead ends: 31448 [2024-11-28 05:20:47,858 INFO L226 Difference]: Without dead ends: 19275 [2024-11-28 05:20:47,869 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 05:20:47,870 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 909 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:47,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 957 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 05:20:47,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19275 states. [2024-11-28 05:20:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19275 to 18478. [2024-11-28 05:20:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18478 states, 18477 states have (on average 1.2248200465443524) internal successors, (22631), 18477 states have internal predecessors, (22631), 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 05:20:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18478 states to 18478 states and 22631 transitions. [2024-11-28 05:20:48,238 INFO L78 Accepts]: Start accepts. Automaton has 18478 states and 22631 transitions. Word has length 150 [2024-11-28 05:20:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:48,239 INFO L471 AbstractCegarLoop]: Abstraction has 18478 states and 22631 transitions. [2024-11-28 05:20:48,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 05:20:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 18478 states and 22631 transitions. [2024-11-28 05:20:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-28 05:20:48,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:48,244 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, 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] [2024-11-28 05:20:48,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:20:48,245 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:48,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:48,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1592160981, now seen corresponding path program 1 times [2024-11-28 05:20:48,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:48,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431614472] [2024-11-28 05:20:48,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:48,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-28 05:20:48,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:48,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431614472] [2024-11-28 05:20:48,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431614472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:48,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:48,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:20:48,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744192768] [2024-11-28 05:20:48,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:48,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:48,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:48,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:48,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:48,516 INFO L87 Difference]: Start difference. First operand 18478 states and 22631 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 05:20:53,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:53,258 INFO L93 Difference]: Finished difference Result 42487 states and 53153 transitions. [2024-11-28 05:20:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:53,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 239 [2024-11-28 05:20:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:53,318 INFO L225 Difference]: With dead ends: 42487 [2024-11-28 05:20:53,318 INFO L226 Difference]: Without dead ends: 24798 [2024-11-28 05:20:53,333 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 05:20:53,334 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 996 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 1023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:53,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 795 Invalid, 3412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 05:20:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24798 states. [2024-11-28 05:20:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24798 to 24786. [2024-11-28 05:20:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24786 states, 24785 states have (on average 1.230260238047206) internal successors, (30492), 24785 states have internal predecessors, (30492), 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 05:20:53,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24786 states to 24786 states and 30492 transitions. [2024-11-28 05:20:53,637 INFO L78 Accepts]: Start accepts. Automaton has 24786 states and 30492 transitions. Word has length 239 [2024-11-28 05:20:53,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:53,637 INFO L471 AbstractCegarLoop]: Abstraction has 24786 states and 30492 transitions. [2024-11-28 05:20:53,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 05:20:53,638 INFO L276 IsEmpty]: Start isEmpty. Operand 24786 states and 30492 transitions. [2024-11-28 05:20:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-28 05:20:53,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:53,645 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:53,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:20:53,645 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:53,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash -28316692, now seen corresponding path program 1 times [2024-11-28 05:20:53,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:53,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290319035] [2024-11-28 05:20:53,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:53,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:20:54,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:54,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290319035] [2024-11-28 05:20:54,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290319035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:54,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:54,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:20:54,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270398861] [2024-11-28 05:20:54,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:54,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:20:54,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:54,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:20:54,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:20:54,230 INFO L87 Difference]: Start difference. First operand 24786 states and 30492 transitions. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 3 states have internal predecessors, (316), 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 05:21:00,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:00,487 INFO L93 Difference]: Finished difference Result 73224 states and 90680 transitions. [2024-11-28 05:21:00,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:21:00,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 3 states have internal predecessors, (316), 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 316 [2024-11-28 05:21:00,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:00,578 INFO L225 Difference]: With dead ends: 73224 [2024-11-28 05:21:00,578 INFO L226 Difference]: Without dead ends: 49227 [2024-11-28 05:21:00,595 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 05:21:00,596 INFO L435 NwaCegarLoop]: 545 mSDtfsCounter, 2244 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 3987 mSolverCounterSat, 826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 4813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 3987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:00,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 757 Invalid, 4813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 3987 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-28 05:21:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49227 states. [2024-11-28 05:21:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49227 to 49213. [2024-11-28 05:21:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49213 states, 49212 states have (on average 1.2029992684711046) internal successors, (59202), 49212 states have internal predecessors, (59202), 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 05:21:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49213 states to 49213 states and 59202 transitions. [2024-11-28 05:21:01,130 INFO L78 Accepts]: Start accepts. Automaton has 49213 states and 59202 transitions. Word has length 316 [2024-11-28 05:21:01,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:01,131 INFO L471 AbstractCegarLoop]: Abstraction has 49213 states and 59202 transitions. [2024-11-28 05:21:01,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 3 states have internal predecessors, (316), 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 05:21:01,131 INFO L276 IsEmpty]: Start isEmpty. Operand 49213 states and 59202 transitions. [2024-11-28 05:21:01,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-28 05:21:01,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:01,139 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:01,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:21:01,140 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:01,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:01,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1413029796, now seen corresponding path program 1 times [2024-11-28 05:21:01,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:01,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209730266] [2024-11-28 05:21:01,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:01,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 05:21:01,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:01,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209730266] [2024-11-28 05:21:01,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209730266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:01,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:01,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:21:01,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354375353] [2024-11-28 05:21:01,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:01,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:21:01,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:01,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:21:01,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:21:01,545 INFO L87 Difference]: Start difference. First operand 49213 states and 59202 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 05:21:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:11,336 INFO L93 Difference]: Finished difference Result 138781 states and 168388 transitions. [2024-11-28 05:21:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:21:11,337 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 342 [2024-11-28 05:21:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:11,451 INFO L225 Difference]: With dead ends: 138781 [2024-11-28 05:21:11,452 INFO L226 Difference]: Without dead ends: 90357 [2024-11-28 05:21:11,478 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 05:21:11,478 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 1708 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 7204 mSolverCounterSat, 980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 8184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 980 IncrementalHoareTripleChecker+Valid, 7204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:11,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 1140 Invalid, 8184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [980 Valid, 7204 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-11-28 05:21:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90357 states. [2024-11-28 05:21:12,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90357 to 90227. [2024-11-28 05:21:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90227 states, 90226 states have (on average 1.1906656617826348) internal successors, (107429), 90226 states have internal predecessors, (107429), 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 05:21:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90227 states to 90227 states and 107429 transitions. [2024-11-28 05:21:13,016 INFO L78 Accepts]: Start accepts. Automaton has 90227 states and 107429 transitions. Word has length 342 [2024-11-28 05:21:13,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:13,019 INFO L471 AbstractCegarLoop]: Abstraction has 90227 states and 107429 transitions. [2024-11-28 05:21:13,019 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 05:21:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 90227 states and 107429 transitions. [2024-11-28 05:21:13,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-28 05:21:13,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:13,027 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, 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, 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] [2024-11-28 05:21:13,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:21:13,027 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:13,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1271299818, now seen corresponding path program 1 times [2024-11-28 05:21:13,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:13,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168945725] [2024-11-28 05:21:13,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:13,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 117 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:14,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:14,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168945725] [2024-11-28 05:21:14,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168945725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:14,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064083608] [2024-11-28 05:21:14,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:14,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:14,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:14,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:14,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:21:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:14,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:21:14,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 05:21:16,308 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:21:16,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064083608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:16,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:21:16,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-28 05:21:16,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482373745] [2024-11-28 05:21:16,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:16,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:16,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:16,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:16,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:21:16,311 INFO L87 Difference]: Start difference. First operand 90227 states and 107429 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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 05:21:20,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:20,494 INFO L93 Difference]: Finished difference Result 167867 states and 201404 transitions. [2024-11-28 05:21:20,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:20,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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 345 [2024-11-28 05:21:20,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:20,588 INFO L225 Difference]: With dead ends: 167867 [2024-11-28 05:21:20,588 INFO L226 Difference]: Without dead ends: 93390 [2024-11-28 05:21:20,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:21:20,633 INFO L435 NwaCegarLoop]: 1088 mSDtfsCounter, 643 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:20,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1225 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 05:21:20,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93390 states. [2024-11-28 05:21:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93390 to 91801. [2024-11-28 05:21:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91801 states, 91800 states have (on average 1.1878322440087146) internal successors, (109043), 91800 states have internal predecessors, (109043), 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 05:21:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91801 states to 91801 states and 109043 transitions. [2024-11-28 05:21:21,870 INFO L78 Accepts]: Start accepts. Automaton has 91801 states and 109043 transitions. Word has length 345 [2024-11-28 05:21:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:21,871 INFO L471 AbstractCegarLoop]: Abstraction has 91801 states and 109043 transitions. [2024-11-28 05:21:21,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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 05:21:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 91801 states and 109043 transitions. [2024-11-28 05:21:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-28 05:21:21,879 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:21,880 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:21,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:21:22,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 05:21:22,085 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:22,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:22,086 INFO L85 PathProgramCache]: Analyzing trace with hash -850235256, now seen corresponding path program 1 times [2024-11-28 05:21:22,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:22,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399810262] [2024-11-28 05:21:22,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:22,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-28 05:21:23,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399810262] [2024-11-28 05:21:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399810262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:23,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:23,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:21:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194672192] [2024-11-28 05:21:23,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:23,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:23,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:23,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:23,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:23,045 INFO L87 Difference]: Start difference. First operand 91801 states and 109043 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 05:21:28,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:28,154 INFO L93 Difference]: Finished difference Result 182817 states and 217304 transitions. [2024-11-28 05:21:28,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:28,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 403 [2024-11-28 05:21:28,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:28,246 INFO L225 Difference]: With dead ends: 182817 [2024-11-28 05:21:28,246 INFO L226 Difference]: Without dead ends: 91805 [2024-11-28 05:21:28,285 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 05:21:28,286 INFO L435 NwaCegarLoop]: 1425 mSDtfsCounter, 954 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:28,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 1520 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 05:21:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91805 states. [2024-11-28 05:21:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91805 to 91793. [2024-11-28 05:21:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91793 states, 91792 states have (on average 1.1372995468014642) internal successors, (104395), 91792 states have internal predecessors, (104395), 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 05:21:29,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91793 states to 91793 states and 104395 transitions. [2024-11-28 05:21:29,402 INFO L78 Accepts]: Start accepts. Automaton has 91793 states and 104395 transitions. Word has length 403 [2024-11-28 05:21:29,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:29,402 INFO L471 AbstractCegarLoop]: Abstraction has 91793 states and 104395 transitions. [2024-11-28 05:21:29,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 05:21:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 91793 states and 104395 transitions. [2024-11-28 05:21:29,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-28 05:21:29,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:29,410 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, 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, 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] [2024-11-28 05:21:29,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:21:29,411 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:29,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:29,411 INFO L85 PathProgramCache]: Analyzing trace with hash -137763772, now seen corresponding path program 1 times [2024-11-28 05:21:29,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:29,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948141595] [2024-11-28 05:21:29,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:29,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-28 05:21:30,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:30,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948141595] [2024-11-28 05:21:30,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948141595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:30,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:30,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:21:30,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266441384] [2024-11-28 05:21:30,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:30,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:30,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:30,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:30,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:30,294 INFO L87 Difference]: Start difference. First operand 91793 states and 104395 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 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 05:21:34,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:34,790 INFO L93 Difference]: Finished difference Result 167847 states and 192284 transitions. [2024-11-28 05:21:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:34,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 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 427 [2024-11-28 05:21:34,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:34,872 INFO L225 Difference]: With dead ends: 167847 [2024-11-28 05:21:34,872 INFO L226 Difference]: Without dead ends: 91804 [2024-11-28 05:21:34,902 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 05:21:34,902 INFO L435 NwaCegarLoop]: 1052 mSDtfsCounter, 725 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:34,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1234 Invalid, 2733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 05:21:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91804 states. [2024-11-28 05:21:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91804 to 91793. [2024-11-28 05:21:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91793 states, 91792 states have (on average 1.1367548370228342) internal successors, (104345), 91792 states have internal predecessors, (104345), 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 05:21:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91793 states to 91793 states and 104345 transitions. [2024-11-28 05:21:35,906 INFO L78 Accepts]: Start accepts. Automaton has 91793 states and 104345 transitions. Word has length 427 [2024-11-28 05:21:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:35,907 INFO L471 AbstractCegarLoop]: Abstraction has 91793 states and 104345 transitions. [2024-11-28 05:21:35,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 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 05:21:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 91793 states and 104345 transitions. [2024-11-28 05:21:35,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-28 05:21:35,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:35,913 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:35,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:21:35,913 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:35,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash 44906732, now seen corresponding path program 1 times [2024-11-28 05:21:35,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:35,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188139916] [2024-11-28 05:21:35,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:35,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 05:21:36,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:36,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188139916] [2024-11-28 05:21:36,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188139916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:36,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:36,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:21:36,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504264208] [2024-11-28 05:21:36,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:36,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:36,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:36,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:36,357 INFO L87 Difference]: Start difference. First operand 91793 states and 104345 transitions. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 05:21:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:41,373 INFO L93 Difference]: Finished difference Result 246518 states and 281711 transitions. [2024-11-28 05:21:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:41,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 434 [2024-11-28 05:21:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:41,517 INFO L225 Difference]: With dead ends: 246518 [2024-11-28 05:21:41,517 INFO L226 Difference]: Without dead ends: 152363 [2024-11-28 05:21:41,557 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 05:21:41,558 INFO L435 NwaCegarLoop]: 1761 mSDtfsCounter, 888 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:41,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1897 Invalid, 3259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 05:21:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152363 states. [2024-11-28 05:21:43,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152363 to 142120. [2024-11-28 05:21:43,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142120 states, 142119 states have (on average 1.108148804874788) internal successors, (157489), 142119 states have internal predecessors, (157489), 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 05:21:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142120 states to 142120 states and 157489 transitions. [2024-11-28 05:21:43,309 INFO L78 Accepts]: Start accepts. Automaton has 142120 states and 157489 transitions. Word has length 434 [2024-11-28 05:21:43,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:43,309 INFO L471 AbstractCegarLoop]: Abstraction has 142120 states and 157489 transitions. [2024-11-28 05:21:43,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 05:21:43,309 INFO L276 IsEmpty]: Start isEmpty. Operand 142120 states and 157489 transitions. [2024-11-28 05:21:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-28 05:21:43,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:43,316 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, 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, 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] [2024-11-28 05:21:43,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:21:43,316 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:43,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:43,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1669071297, now seen corresponding path program 1 times [2024-11-28 05:21:43,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:43,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635795618] [2024-11-28 05:21:43,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:43,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:44,449 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 207 proven. 75 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-11-28 05:21:44,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:44,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635795618] [2024-11-28 05:21:44,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635795618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:44,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759180271] [2024-11-28 05:21:44,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:44,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:44,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:44,454 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:44,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:21:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:44,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:21:44,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-28 05:21:45,187 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:21:45,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759180271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:45,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:21:45,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-28 05:21:45,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395805771] [2024-11-28 05:21:45,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:45,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:45,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:45,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:45,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:21:45,189 INFO L87 Difference]: Start difference. First operand 142120 states and 157489 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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 05:21:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:49,520 INFO L93 Difference]: Finished difference Result 283440 states and 314176 transitions. [2024-11-28 05:21:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:49,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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 451 [2024-11-28 05:21:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:49,901 INFO L225 Difference]: With dead ends: 283440 [2024-11-28 05:21:49,901 INFO L226 Difference]: Without dead ends: 142109 [2024-11-28 05:21:49,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:21:49,946 INFO L435 NwaCegarLoop]: 635 mSDtfsCounter, 1005 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:49,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 755 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 05:21:50,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142109 states. [2024-11-28 05:21:51,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142109 to 142106. [2024-11-28 05:21:51,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142106 states, 142105 states have (on average 1.0810808908905387) internal successors, (153627), 142105 states have internal predecessors, (153627), 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 05:21:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142106 states to 142106 states and 153627 transitions. [2024-11-28 05:21:51,311 INFO L78 Accepts]: Start accepts. Automaton has 142106 states and 153627 transitions. Word has length 451 [2024-11-28 05:21:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:51,312 INFO L471 AbstractCegarLoop]: Abstraction has 142106 states and 153627 transitions. [2024-11-28 05:21:51,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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 05:21:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 142106 states and 153627 transitions. [2024-11-28 05:21:51,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-11-28 05:21:51,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:51,318 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, 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, 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] [2024-11-28 05:21:51,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:21:51,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 05:21:51,519 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:51,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1601864273, now seen corresponding path program 1 times [2024-11-28 05:21:51,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:51,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850987500] [2024-11-28 05:21:51,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:51,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-28 05:21:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:52,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850987500] [2024-11-28 05:21:52,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850987500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:52,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:52,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:21:52,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061040077] [2024-11-28 05:21:52,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:52,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:52,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:52,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:52,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:52,350 INFO L87 Difference]: Start difference. First operand 142106 states and 153627 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 05:21:57,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:57,958 INFO L93 Difference]: Finished difference Result 283421 states and 306461 transitions. [2024-11-28 05:21:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:57,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 456 [2024-11-28 05:21:57,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:58,263 INFO L225 Difference]: With dead ends: 283421 [2024-11-28 05:21:58,264 INFO L226 Difference]: Without dead ends: 142104 [2024-11-28 05:21:58,301 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 05:21:58,302 INFO L435 NwaCegarLoop]: 1314 mSDtfsCounter, 1108 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:58,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1392 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-28 05:21:58,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142104 states. [2024-11-28 05:21:59,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142104 to 142103. [2024-11-28 05:21:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142103 states, 142102 states have (on average 1.0619414223585875) internal successors, (150904), 142102 states have internal predecessors, (150904), 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 05:21:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142103 states to 142103 states and 150904 transitions. [2024-11-28 05:21:59,949 INFO L78 Accepts]: Start accepts. Automaton has 142103 states and 150904 transitions. Word has length 456 [2024-11-28 05:21:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:59,950 INFO L471 AbstractCegarLoop]: Abstraction has 142103 states and 150904 transitions. [2024-11-28 05:21:59,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 05:21:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 142103 states and 150904 transitions. [2024-11-28 05:21:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-11-28 05:21:59,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:59,963 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:59,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:21:59,963 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:59,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:59,964 INFO L85 PathProgramCache]: Analyzing trace with hash -312690779, now seen corresponding path program 1 times [2024-11-28 05:21:59,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:59,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388840052] [2024-11-28 05:21:59,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:59,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 558 proven. 100 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2024-11-28 05:22:01,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:01,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388840052] [2024-11-28 05:22:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388840052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:22:01,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899706470] [2024-11-28 05:22:01,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:01,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:22:01,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:22:01,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:22:01,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:22:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:01,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:22:01,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:22:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 809 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-28 05:22:02,778 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:22:02,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899706470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:22:02,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:22:02,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 05:22:02,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77890143] [2024-11-28 05:22:02,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:22:02,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:22:02,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:02,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:22:02,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:22:02,780 INFO L87 Difference]: Start difference. First operand 142103 states and 150904 transitions. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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 05:22:08,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:22:08,340 INFO L93 Difference]: Finished difference Result 275542 states and 293229 transitions. [2024-11-28 05:22:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:22:08,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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 545 [2024-11-28 05:22:08,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:22:08,529 INFO L225 Difference]: With dead ends: 275542 [2024-11-28 05:22:08,529 INFO L226 Difference]: Without dead ends: 149187 [2024-11-28 05:22:08,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:22:08,561 INFO L435 NwaCegarLoop]: 622 mSDtfsCounter, 1908 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4057 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 4484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 4057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:22:08,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1908 Valid, 801 Invalid, 4484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 4057 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 05:22:08,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149187 states. [2024-11-28 05:22:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149187 to 146825. [2024-11-28 05:22:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146825 states, 146824 states have (on average 1.06099820192884) internal successors, (155780), 146824 states have internal predecessors, (155780), 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 05:22:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146825 states to 146825 states and 155780 transitions. [2024-11-28 05:22:10,340 INFO L78 Accepts]: Start accepts. Automaton has 146825 states and 155780 transitions. Word has length 545 [2024-11-28 05:22:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:22:10,341 INFO L471 AbstractCegarLoop]: Abstraction has 146825 states and 155780 transitions. [2024-11-28 05:22:10,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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 05:22:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 146825 states and 155780 transitions. [2024-11-28 05:22:10,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-11-28 05:22:10,356 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:22:10,356 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:10,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:22:10,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6bb9ca-23ad-4c01-b2d8-a050071c37ac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:22:10,557 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:22:10,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash -705129669, now seen corresponding path program 1 times [2024-11-28 05:22:10,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:10,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129549914] [2024-11-28 05:22:10,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:10,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 587 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-28 05:22:11,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:11,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129549914] [2024-11-28 05:22:11,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129549914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:22:11,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:22:11,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:22:11,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121446944] [2024-11-28 05:22:11,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:22:11,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:22:11,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:11,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:22:11,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:22:11,558 INFO L87 Difference]: Start difference. First operand 146825 states and 155780 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 05:22:16,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:22:16,562 INFO L93 Difference]: Finished difference Result 295257 states and 313203 transitions. [2024-11-28 05:22:16,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:22:16,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 549 [2024-11-28 05:22:16,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:22:16,722 INFO L225 Difference]: With dead ends: 295257 [2024-11-28 05:22:16,722 INFO L226 Difference]: Without dead ends: 147642 [2024-11-28 05:22:16,780 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 05:22:16,780 INFO L435 NwaCegarLoop]: 1665 mSDtfsCounter, 718 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:22:16,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1802 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 05:22:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147642 states. [2024-11-28 05:22:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147642 to 141301. [2024-11-28 05:22:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141301 states, 141300 states have (on average 1.055166312809625) internal successors, (149095), 141300 states have internal predecessors, (149095), 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 05:22:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141301 states to 141301 states and 149095 transitions. [2024-11-28 05:22:18,480 INFO L78 Accepts]: Start accepts. Automaton has 141301 states and 149095 transitions. Word has length 549 [2024-11-28 05:22:18,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:22:18,481 INFO L471 AbstractCegarLoop]: Abstraction has 141301 states and 149095 transitions. [2024-11-28 05:22:18,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 05:22:18,481 INFO L276 IsEmpty]: Start isEmpty. Operand 141301 states and 149095 transitions. [2024-11-28 05:22:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2024-11-28 05:22:18,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:22:18,495 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, 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, 3, 3, 3, 3, 3, 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] [2024-11-28 05:22:18,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 05:22:18,495 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:22:18,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1127182790, now seen corresponding path program 1 times [2024-11-28 05:22:18,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:18,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124195259] [2024-11-28 05:22:18,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:18,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:19,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2024-11-28 05:22:19,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:19,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124195259] [2024-11-28 05:22:19,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124195259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:22:19,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:22:19,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:22:19,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339281837] [2024-11-28 05:22:19,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:22:19,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:22:19,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:19,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:22:19,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:22:19,292 INFO L87 Difference]: Start difference. First operand 141301 states and 149095 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 05:22:24,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:22:24,238 INFO L93 Difference]: Finished difference Result 313300 states and 331920 transitions. [2024-11-28 05:22:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:22:24,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 578 [2024-11-28 05:22:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:22:24,404 INFO L225 Difference]: With dead ends: 313300 [2024-11-28 05:22:24,404 INFO L226 Difference]: Without dead ends: 172788 [2024-11-28 05:22:24,457 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 05:22:24,458 INFO L435 NwaCegarLoop]: 1696 mSDtfsCounter, 759 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:22:24,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1834 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 05:22:24,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172788 states. [2024-11-28 05:22:26,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172788 to 170419. [2024-11-28 05:22:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170419 states, 170418 states have (on average 1.052371228391367) internal successors, (179343), 170418 states have internal predecessors, (179343), 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 05:22:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170419 states to 170419 states and 179343 transitions. [2024-11-28 05:22:26,418 INFO L78 Accepts]: Start accepts. Automaton has 170419 states and 179343 transitions. Word has length 578 [2024-11-28 05:22:26,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:22:26,418 INFO L471 AbstractCegarLoop]: Abstraction has 170419 states and 179343 transitions. [2024-11-28 05:22:26,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 05:22:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 170419 states and 179343 transitions. [2024-11-28 05:22:26,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2024-11-28 05:22:26,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:22:26,431 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 05:22:26,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 05:22:26,431 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:22:26,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:26,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1462924076, now seen corresponding path program 1 times [2024-11-28 05:22:26,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:26,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420642471] [2024-11-28 05:22:26,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:26,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 836 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-28 05:22:27,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:27,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420642471] [2024-11-28 05:22:27,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420642471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:22:27,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:22:27,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:22:27,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920884567] [2024-11-28 05:22:27,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:22:27,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:22:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:27,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:22:27,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:22:27,188 INFO L87 Difference]: Start difference. First operand 170419 states and 179343 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 05:22:32,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:22:32,002 INFO L93 Difference]: Finished difference Result 333722 states and 351996 transitions. [2024-11-28 05:22:32,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:22:32,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 581 [2024-11-28 05:22:32,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:22:32,212 INFO L225 Difference]: With dead ends: 333722 [2024-11-28 05:22:32,212 INFO L226 Difference]: Without dead ends: 179837 [2024-11-28 05:22:32,273 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 05:22:32,273 INFO L435 NwaCegarLoop]: 1396 mSDtfsCounter, 1041 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:22:32,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 1476 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 05:22:32,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179837 states. [2024-11-28 05:22:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179837 to 179836. [2024-11-28 05:22:34,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179836 states, 179835 states have (on average 1.048794728501126) internal successors, (188610), 179835 states have internal predecessors, (188610), 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 05:22:34,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179836 states to 179836 states and 188610 transitions. [2024-11-28 05:22:34,552 INFO L78 Accepts]: Start accepts. Automaton has 179836 states and 188610 transitions. Word has length 581 [2024-11-28 05:22:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:22:34,553 INFO L471 AbstractCegarLoop]: Abstraction has 179836 states and 188610 transitions. [2024-11-28 05:22:34,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 05:22:34,553 INFO L276 IsEmpty]: Start isEmpty. Operand 179836 states and 188610 transitions. [2024-11-28 05:22:34,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2024-11-28 05:22:34,565 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:22:34,566 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, 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, 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] [2024-11-28 05:22:34,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 05:22:34,566 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:22:34,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:34,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1140145547, now seen corresponding path program 1 times [2024-11-28 05:22:34,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:34,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94198771] [2024-11-28 05:22:34,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:34,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 823 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-28 05:22:34,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:34,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94198771] [2024-11-28 05:22:34,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94198771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:22:34,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:22:34,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:22:34,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511279812] [2024-11-28 05:22:34,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:22:34,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:22:34,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:34,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:22:34,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:22:34,921 INFO L87 Difference]: Start difference. First operand 179836 states and 188610 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 05:22:40,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:22:40,807 INFO L93 Difference]: Finished difference Result 358879 states and 376370 transitions. [2024-11-28 05:22:40,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:22:40,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 614 [2024-11-28 05:22:40,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:22:41,017 INFO L225 Difference]: With dead ends: 358879 [2024-11-28 05:22:41,018 INFO L226 Difference]: Without dead ends: 178258 [2024-11-28 05:22:41,074 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 05:22:41,075 INFO L435 NwaCegarLoop]: 1609 mSDtfsCounter, 783 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:22:41,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1738 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 05:22:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178258 states. [2024-11-28 05:22:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178258 to 175882. [2024-11-28 05:22:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175882 states, 175881 states have (on average 1.0370420909592282) internal successors, (182396), 175881 states have internal predecessors, (182396), 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 05:22:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175882 states to 175882 states and 182396 transitions. [2024-11-28 05:22:43,821 INFO L78 Accepts]: Start accepts. Automaton has 175882 states and 182396 transitions. Word has length 614 [2024-11-28 05:22:43,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:22:43,821 INFO L471 AbstractCegarLoop]: Abstraction has 175882 states and 182396 transitions. [2024-11-28 05:22:43,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 05:22:43,822 INFO L276 IsEmpty]: Start isEmpty. Operand 175882 states and 182396 transitions. [2024-11-28 05:22:43,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-11-28 05:22:43,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:22:43,836 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, 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, 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, 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] [2024-11-28 05:22:43,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 05:22:43,836 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:22:43,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash -183106340, now seen corresponding path program 1 times [2024-11-28 05:22:43,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:43,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671458995] [2024-11-28 05:22:43,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:43,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 946 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-28 05:22:44,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:44,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671458995] [2024-11-28 05:22:44,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671458995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:22:44,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:22:44,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:22:44,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307757875] [2024-11-28 05:22:44,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:22:44,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:22:44,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:44,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:22:44,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:22:44,325 INFO L87 Difference]: Start difference. First operand 175882 states and 182396 transitions. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:22:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:22:50,382 INFO L93 Difference]: Finished difference Result 337591 states and 350428 transitions. [2024-11-28 05:22:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:22:50,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 638 [2024-11-28 05:22:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:22:50,556 INFO L225 Difference]: With dead ends: 337591 [2024-11-28 05:22:50,556 INFO L226 Difference]: Without dead ends: 176669 [2024-11-28 05:22:50,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 05:22:50,624 INFO L435 NwaCegarLoop]: 1415 mSDtfsCounter, 1573 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 5395 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 5600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 5395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:22:50,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 1683 Invalid, 5600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 5395 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-28 05:22:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176669 states.