./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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_5786c690-bd4e-4015-8af6-c59395ac8f63/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/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_5786c690-bd4e-4015-8af6-c59395ac8f63/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/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_5786c690-bd4e-4015-8af6-c59395ac8f63/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 16db63adfa8747ce86c67ae78be78e889eae71e4b07fbcb21a84ad0decbbdac7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:27:06,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:27:06,295 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:27:06,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:27:06,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:27:06,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:27:06,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:27:06,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:27:06,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:27:06,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:27:06,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:27:06,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:27:06,353 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:27:06,353 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:27:06,353 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:27:06,354 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:27:06,354 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:27:06,354 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:27:06,354 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:27:06,354 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:27:06,356 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:27:06,356 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:27:06,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:27:06,357 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:27:06,357 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:27:06,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:27:06,357 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:27:06,357 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:27:06,358 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:27:06,358 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:27:06,358 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:27:06,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:27:06,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:06,359 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:27:06,359 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:27:06,359 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:27:06,359 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:27:06,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:06,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:27:06,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:27:06,359 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:27:06,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:27:06,359 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:27:06,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:27:06,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:27:06,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:27:06,360 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:27:06,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:27:06,360 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_5786c690-bd4e-4015-8af6-c59395ac8f63/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 -> 16db63adfa8747ce86c67ae78be78e889eae71e4b07fbcb21a84ad0decbbdac7 [2024-11-27 23:27:06,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:27:06,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:27:06,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:27:06,701 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:27:06,702 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:27:06,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 23:27:09,729 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/bin/uautomizer-verify-aQ6SnzHsRB/data/7abbb29f2/4112a13fab524c599b02fdaccb4cc3f9/FLAGe3693269f [2024-11-27 23:27:10,031 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:27:10,032 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 23:27:10,061 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/bin/uautomizer-verify-aQ6SnzHsRB/data/7abbb29f2/4112a13fab524c599b02fdaccb4cc3f9/FLAGe3693269f [2024-11-27 23:27:10,288 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/bin/uautomizer-verify-aQ6SnzHsRB/data/7abbb29f2/4112a13fab524c599b02fdaccb4cc3f9 [2024-11-27 23:27:10,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:27:10,291 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:27:10,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:27:10,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:27:10,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:27:10,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:27:10" (1/1) ... [2024-11-27 23:27:10,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d5ac25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:10, skipping insertion in model container [2024-11-27 23:27:10,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:27:10" (1/1) ... [2024-11-27 23:27:10,349 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:27:10,660 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_5786c690-bd4e-4015-8af6-c59395ac8f63/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2024-11-27 23:27:10,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:27:10,794 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:27:10,947 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_5786c690-bd4e-4015-8af6-c59395ac8f63/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2024-11-27 23:27:11,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:27:11,064 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:27:11,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11 WrapperNode [2024-11-27 23:27:11,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:27:11,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:27:11,068 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:27:11,068 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:27:11,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,200 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1367 [2024-11-27 23:27:11,200 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:27:11,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:27:11,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:27:11,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:27:11,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,273 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]. [2024-11-27 23:27:11,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,308 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,310 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:27:11,344 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:27:11,344 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:27:11,344 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:27:11,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (1/1) ... [2024-11-27 23:27:11,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:11,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:11,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:27:11,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5786c690-bd4e-4015-8af6-c59395ac8f63/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:27:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:27:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:27:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:27:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:27:11,614 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:27:11,616 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:27:13,338 INFO L? ?]: Removed 119 outVars from TransFormulas that were not future-live. [2024-11-27 23:27:13,338 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:27:13,369 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:27:13,370 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 23:27:13,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:27:13 BoogieIcfgContainer [2024-11-27 23:27:13,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:27:13,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:27:13,372 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:27:13,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:27:13,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:27:10" (1/3) ... [2024-11-27 23:27:13,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5deb916e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:27:13, skipping insertion in model container [2024-11-27 23:27:13,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:11" (2/3) ... [2024-11-27 23:27:13,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5deb916e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:27:13, skipping insertion in model container [2024-11-27 23:27:13,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:27:13" (3/3) ... [2024-11-27 23:27:13,380 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-27 23:27:13,397 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:27:13,402 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 326 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 23:27:13,520 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:27:13,536 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;@6eb0abbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:27:13,537 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:27:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 324 states have (on average 1.7962962962962963) internal successors, (582), 325 states have internal predecessors, (582), 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) [2024-11-27 23:27:13,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 23:27:13,560 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:13,561 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:13,562 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:13,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:13,569 INFO L85 PathProgramCache]: Analyzing trace with hash 430105228, now seen corresponding path program 1 times [2024-11-27 23:27:13,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:13,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32542733] [2024-11-27 23:27:13,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:13,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:14,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32542733] [2024-11-27 23:27:14,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32542733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:14,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:14,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:14,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810010632] [2024-11-27 23:27:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:14,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:14,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:14,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:14,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:14,574 INFO L87 Difference]: Start difference. First operand has 326 states, 324 states have (on average 1.7962962962962963) internal successors, (582), 325 states have internal predecessors, (582), 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 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-27 23:27:14,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:14,733 INFO L93 Difference]: Finished difference Result 589 states and 1021 transitions. [2024-11-27 23:27:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2024-11-27 23:27:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:14,753 INFO L225 Difference]: With dead ends: 589 [2024-11-27 23:27:14,756 INFO L226 Difference]: Without dead ends: 446 [2024-11-27 23:27:14,760 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 [2024-11-27 23:27:14,765 INFO L435 NwaCegarLoop]: 576 mSDtfsCounter, 232 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:14,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1074 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-27 23:27:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 443. [2024-11-27 23:27:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.660633484162896) internal successors, (734), 442 states have internal predecessors, (734), 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) [2024-11-27 23:27:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 734 transitions. [2024-11-27 23:27:14,832 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 734 transitions. Word has length 110 [2024-11-27 23:27:14,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:14,833 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 734 transitions. [2024-11-27 23:27:14,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-11-27 23:27:14,833 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 734 transitions. [2024-11-27 23:27:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 23:27:14,839 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:14,839 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:14,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:27:14,840 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:14,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:14,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1228540371, now seen corresponding path program 1 times [2024-11-27 23:27:14,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:14,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743993544] [2024-11-27 23:27:14,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:14,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:15,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:15,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743993544] [2024-11-27 23:27:15,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743993544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:15,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:15,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:15,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921160079] [2024-11-27 23:27:15,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:15,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:15,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:15,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:15,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:15,231 INFO L87 Difference]: Start difference. First operand 443 states and 734 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-27 23:27:15,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:15,316 INFO L93 Difference]: Finished difference Result 933 states and 1550 transitions. [2024-11-27 23:27:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:15,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2024-11-27 23:27:15,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:15,321 INFO L225 Difference]: With dead ends: 933 [2024-11-27 23:27:15,321 INFO L226 Difference]: Without dead ends: 679 [2024-11-27 23:27:15,322 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 [2024-11-27 23:27:15,323 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 200 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:15,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1028 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-27 23:27:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 675. [2024-11-27 23:27:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.6587537091988132) internal successors, (1118), 674 states have internal predecessors, (1118), 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) [2024-11-27 23:27:15,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2024-11-27 23:27:15,379 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 113 [2024-11-27 23:27:15,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:15,380 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2024-11-27 23:27:15,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-27 23:27:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2024-11-27 23:27:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 23:27:15,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:15,385 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:15,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:27:15,385 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:15,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:15,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1403707664, now seen corresponding path program 1 times [2024-11-27 23:27:15,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:15,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569888072] [2024-11-27 23:27:15,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:15,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:15,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:15,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569888072] [2024-11-27 23:27:15,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569888072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:15,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:15,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:15,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597379335] [2024-11-27 23:27:15,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:15,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:15,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:15,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:15,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:15,706 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2024-11-27 23:27:15,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:15,780 INFO L93 Difference]: Finished difference Result 1611 states and 2668 transitions. [2024-11-27 23:27:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:15,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 116 [2024-11-27 23:27:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:15,788 INFO L225 Difference]: With dead ends: 1611 [2024-11-27 23:27:15,789 INFO L226 Difference]: Without dead ends: 1125 [2024-11-27 23:27:15,791 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 [2024-11-27 23:27:15,792 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 194 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:15,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1029 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2024-11-27 23:27:15,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1119. [2024-11-27 23:27:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.6511627906976745) internal successors, (1846), 1118 states have internal predecessors, (1846), 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) [2024-11-27 23:27:15,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1846 transitions. [2024-11-27 23:27:15,851 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1846 transitions. Word has length 116 [2024-11-27 23:27:15,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:15,852 INFO L471 AbstractCegarLoop]: Abstraction has 1119 states and 1846 transitions. [2024-11-27 23:27:15,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2024-11-27 23:27:15,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1846 transitions. [2024-11-27 23:27:15,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 23:27:15,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:15,856 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:15,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:27:15,857 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:15,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:15,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1658128561, now seen corresponding path program 1 times [2024-11-27 23:27:15,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:15,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575002248] [2024-11-27 23:27:15,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:15,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:16,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:16,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575002248] [2024-11-27 23:27:16,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575002248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:16,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:16,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:16,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499340272] [2024-11-27 23:27:16,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:16,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:16,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:16,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:16,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:16,169 INFO L87 Difference]: Start difference. First operand 1119 states and 1846 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 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) [2024-11-27 23:27:16,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:16,248 INFO L93 Difference]: Finished difference Result 2907 states and 4784 transitions. [2024-11-27 23:27:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:16,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 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 [2024-11-27 23:27:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:16,258 INFO L225 Difference]: With dead ends: 2907 [2024-11-27 23:27:16,259 INFO L226 Difference]: Without dead ends: 1977 [2024-11-27 23:27:16,260 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 [2024-11-27 23:27:16,263 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 188 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:16,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1030 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:16,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2024-11-27 23:27:16,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1967. [2024-11-27 23:27:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1966 states have (on average 1.6388606307222788) internal successors, (3222), 1966 states have internal predecessors, (3222), 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) [2024-11-27 23:27:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 3222 transitions. [2024-11-27 23:27:16,329 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 3222 transitions. Word has length 119 [2024-11-27 23:27:16,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:16,329 INFO L471 AbstractCegarLoop]: Abstraction has 1967 states and 3222 transitions. [2024-11-27 23:27:16,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 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) [2024-11-27 23:27:16,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 3222 transitions. [2024-11-27 23:27:16,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-27 23:27:16,332 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:16,333 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:16,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:27:16,333 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:16,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1735235476, now seen corresponding path program 1 times [2024-11-27 23:27:16,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:16,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30964520] [2024-11-27 23:27:16,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:16,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:16,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:16,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30964520] [2024-11-27 23:27:16,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30964520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:16,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:16,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:16,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465869524] [2024-11-27 23:27:16,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:16,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:16,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:16,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:16,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:16,734 INFO L87 Difference]: Start difference. First operand 1967 states and 3222 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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) [2024-11-27 23:27:17,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:17,222 INFO L93 Difference]: Finished difference Result 10223 states and 16898 transitions. [2024-11-27 23:27:17,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:27:17,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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 122 [2024-11-27 23:27:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:17,259 INFO L225 Difference]: With dead ends: 10223 [2024-11-27 23:27:17,259 INFO L226 Difference]: Without dead ends: 8445 [2024-11-27 23:27:17,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:17,267 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 2115 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:17,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 3920 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8445 states. [2024-11-27 23:27:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8445 to 3625. [2024-11-27 23:27:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3624 states have (on average 1.6382450331125828) internal successors, (5937), 3624 states have internal predecessors, (5937), 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) [2024-11-27 23:27:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5937 transitions. [2024-11-27 23:27:17,445 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5937 transitions. Word has length 122 [2024-11-27 23:27:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:17,445 INFO L471 AbstractCegarLoop]: Abstraction has 3625 states and 5937 transitions. [2024-11-27 23:27:17,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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) [2024-11-27 23:27:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5937 transitions. [2024-11-27 23:27:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-27 23:27:17,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:17,453 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:17,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:27:17,454 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:17,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:17,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2109337106, now seen corresponding path program 1 times [2024-11-27 23:27:17,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:17,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488833051] [2024-11-27 23:27:17,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:17,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:17,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:17,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488833051] [2024-11-27 23:27:17,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488833051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:17,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:17,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:17,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884794915] [2024-11-27 23:27:17,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:17,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:17,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:17,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:17,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:17,711 INFO L87 Difference]: Start difference. First operand 3625 states and 5937 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-27 23:27:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:17,895 INFO L93 Difference]: Finished difference Result 10605 states and 17475 transitions. [2024-11-27 23:27:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:17,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 123 [2024-11-27 23:27:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:17,922 INFO L225 Difference]: With dead ends: 10605 [2024-11-27 23:27:17,922 INFO L226 Difference]: Without dead ends: 7169 [2024-11-27 23:27:17,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:17,928 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 658 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:17,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1605 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7169 states. [2024-11-27 23:27:18,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 5380. [2024-11-27 23:27:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5380 states, 5379 states have (on average 1.6417549730433165) internal successors, (8831), 5379 states have internal predecessors, (8831), 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) [2024-11-27 23:27:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5380 states to 5380 states and 8831 transitions. [2024-11-27 23:27:18,122 INFO L78 Accepts]: Start accepts. Automaton has 5380 states and 8831 transitions. Word has length 123 [2024-11-27 23:27:18,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:18,123 INFO L471 AbstractCegarLoop]: Abstraction has 5380 states and 8831 transitions. [2024-11-27 23:27:18,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-27 23:27:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5380 states and 8831 transitions. [2024-11-27 23:27:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 23:27:18,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:18,127 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:18,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:27:18,127 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:18,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:18,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1027444837, now seen corresponding path program 1 times [2024-11-27 23:27:18,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:18,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804792325] [2024-11-27 23:27:18,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:18,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:18,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:18,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804792325] [2024-11-27 23:27:18,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804792325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:18,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:18,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:18,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487902110] [2024-11-27 23:27:18,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:18,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:18,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:18,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:18,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:18,360 INFO L87 Difference]: Start difference. First operand 5380 states and 8831 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-11-27 23:27:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:18,580 INFO L93 Difference]: Finished difference Result 15777 states and 25981 transitions. [2024-11-27 23:27:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 124 [2024-11-27 23:27:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:18,620 INFO L225 Difference]: With dead ends: 15777 [2024-11-27 23:27:18,621 INFO L226 Difference]: Without dead ends: 10586 [2024-11-27 23:27:18,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:18,628 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 656 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:18,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1653 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10586 states. [2024-11-27 23:27:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10586 to 7959. [2024-11-27 23:27:18,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7959 states, 7958 states have (on average 1.6406132194018597) internal successors, (13056), 7958 states have internal predecessors, (13056), 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) [2024-11-27 23:27:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 13056 transitions. [2024-11-27 23:27:18,919 INFO L78 Accepts]: Start accepts. Automaton has 7959 states and 13056 transitions. Word has length 124 [2024-11-27 23:27:18,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:18,919 INFO L471 AbstractCegarLoop]: Abstraction has 7959 states and 13056 transitions. [2024-11-27 23:27:18,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-11-27 23:27:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7959 states and 13056 transitions. [2024-11-27 23:27:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 23:27:18,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:18,926 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:18,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:27:18,926 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:18,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash -275676370, now seen corresponding path program 1 times [2024-11-27 23:27:18,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:18,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748913224] [2024-11-27 23:27:18,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:19,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:19,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748913224] [2024-11-27 23:27:19,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748913224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:19,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:19,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462357193] [2024-11-27 23:27:19,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:19,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:19,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:19,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:19,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:19,127 INFO L87 Difference]: Start difference. First operand 7959 states and 13056 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-11-27 23:27:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:19,308 INFO L93 Difference]: Finished difference Result 15656 states and 25739 transitions. [2024-11-27 23:27:19,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:19,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2024-11-27 23:27:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:19,335 INFO L225 Difference]: With dead ends: 15656 [2024-11-27 23:27:19,335 INFO L226 Difference]: Without dead ends: 11380 [2024-11-27 23:27:19,343 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 [2024-11-27 23:27:19,343 INFO L435 NwaCegarLoop]: 619 mSDtfsCounter, 193 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:19,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1120 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:19,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11380 states. [2024-11-27 23:27:19,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11380 to 11378. [2024-11-27 23:27:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11378 states, 11377 states have (on average 1.6374263865693943) internal successors, (18629), 11377 states have internal predecessors, (18629), 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) [2024-11-27 23:27:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11378 states to 11378 states and 18629 transitions. [2024-11-27 23:27:19,668 INFO L78 Accepts]: Start accepts. Automaton has 11378 states and 18629 transitions. Word has length 125 [2024-11-27 23:27:19,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:19,668 INFO L471 AbstractCegarLoop]: Abstraction has 11378 states and 18629 transitions. [2024-11-27 23:27:19,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-11-27 23:27:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 11378 states and 18629 transitions. [2024-11-27 23:27:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 23:27:19,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:19,672 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:19,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:27:19,672 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:19,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:19,673 INFO L85 PathProgramCache]: Analyzing trace with hash 15369622, now seen corresponding path program 1 times [2024-11-27 23:27:19,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:19,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440673701] [2024-11-27 23:27:19,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:19,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:19,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:19,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440673701] [2024-11-27 23:27:19,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440673701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:19,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:19,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91751252] [2024-11-27 23:27:19,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:19,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:19,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:19,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:19,900 INFO L87 Difference]: Start difference. First operand 11378 states and 18629 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-11-27 23:27:20,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:20,056 INFO L93 Difference]: Finished difference Result 22088 states and 36263 transitions. [2024-11-27 23:27:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:20,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2024-11-27 23:27:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:20,096 INFO L225 Difference]: With dead ends: 22088 [2024-11-27 23:27:20,097 INFO L226 Difference]: Without dead ends: 16096 [2024-11-27 23:27:20,106 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 [2024-11-27 23:27:20,107 INFO L435 NwaCegarLoop]: 592 mSDtfsCounter, 187 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:20,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1094 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:20,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16096 states. [2024-11-27 23:27:20,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16096 to 16094. [2024-11-27 23:27:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16094 states, 16093 states have (on average 1.6340645000932081) internal successors, (26297), 16093 states have internal predecessors, (26297), 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) [2024-11-27 23:27:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16094 states to 16094 states and 26297 transitions. [2024-11-27 23:27:20,492 INFO L78 Accepts]: Start accepts. Automaton has 16094 states and 26297 transitions. Word has length 125 [2024-11-27 23:27:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:20,492 INFO L471 AbstractCegarLoop]: Abstraction has 16094 states and 26297 transitions. [2024-11-27 23:27:20,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-11-27 23:27:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 16094 states and 26297 transitions. [2024-11-27 23:27:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 23:27:20,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:20,496 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:20,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:27:20,496 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:20,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:20,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1843964843, now seen corresponding path program 1 times [2024-11-27 23:27:20,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:20,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920196615] [2024-11-27 23:27:20,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:20,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:20,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:20,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920196615] [2024-11-27 23:27:20,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920196615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:20,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:20,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:20,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403577081] [2024-11-27 23:27:20,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:20,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:20,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:20,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:20,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:20,789 INFO L87 Difference]: Start difference. First operand 16094 states and 26297 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-11-27 23:27:21,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:21,102 INFO L93 Difference]: Finished difference Result 50960 states and 83572 transitions. [2024-11-27 23:27:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:21,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 125 [2024-11-27 23:27:21,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:21,210 INFO L225 Difference]: With dead ends: 50960 [2024-11-27 23:27:21,211 INFO L226 Difference]: Without dead ends: 35474 [2024-11-27 23:27:21,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:21,236 INFO L435 NwaCegarLoop]: 524 mSDtfsCounter, 654 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:21,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1550 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35474 states. [2024-11-27 23:27:21,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35474 to 25732. [2024-11-27 23:27:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25732 states, 25731 states have (on average 1.6325444016944541) internal successors, (42007), 25731 states have internal predecessors, (42007), 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) [2024-11-27 23:27:22,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25732 states to 25732 states and 42007 transitions. [2024-11-27 23:27:22,004 INFO L78 Accepts]: Start accepts. Automaton has 25732 states and 42007 transitions. Word has length 125 [2024-11-27 23:27:22,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:22,005 INFO L471 AbstractCegarLoop]: Abstraction has 25732 states and 42007 transitions. [2024-11-27 23:27:22,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-11-27 23:27:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 25732 states and 42007 transitions. [2024-11-27 23:27:22,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 23:27:22,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:22,008 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:22,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:27:22,008 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:22,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash -815921210, now seen corresponding path program 1 times [2024-11-27 23:27:22,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:22,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331346178] [2024-11-27 23:27:22,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:22,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:22,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:22,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331346178] [2024-11-27 23:27:22,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331346178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:22,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:22,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:22,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122321547] [2024-11-27 23:27:22,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:22,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:22,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:22,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:22,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:22,173 INFO L87 Difference]: Start difference. First operand 25732 states and 42007 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-11-27 23:27:22,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:22,364 INFO L93 Difference]: Finished difference Result 55910 states and 91585 transitions. [2024-11-27 23:27:22,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:22,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2024-11-27 23:27:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:22,461 INFO L225 Difference]: With dead ends: 55910 [2024-11-27 23:27:22,462 INFO L226 Difference]: Without dead ends: 38187 [2024-11-27 23:27:22,487 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 [2024-11-27 23:27:22,488 INFO L435 NwaCegarLoop]: 665 mSDtfsCounter, 199 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:22,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1165 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38187 states. [2024-11-27 23:27:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38187 to 38185. [2024-11-27 23:27:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38185 states, 38184 states have (on average 1.6302639849151477) internal successors, (62250), 38184 states have internal predecessors, (62250), 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) [2024-11-27 23:27:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38185 states to 38185 states and 62250 transitions. [2024-11-27 23:27:23,497 INFO L78 Accepts]: Start accepts. Automaton has 38185 states and 62250 transitions. Word has length 125 [2024-11-27 23:27:23,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:23,498 INFO L471 AbstractCegarLoop]: Abstraction has 38185 states and 62250 transitions. [2024-11-27 23:27:23,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-11-27 23:27:23,498 INFO L276 IsEmpty]: Start isEmpty. Operand 38185 states and 62250 transitions. [2024-11-27 23:27:23,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 23:27:23,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:23,501 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:23,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:27:23,501 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:23,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:23,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2056786782, now seen corresponding path program 1 times [2024-11-27 23:27:23,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:23,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322856130] [2024-11-27 23:27:23,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:23,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:23,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:23,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322856130] [2024-11-27 23:27:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322856130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:23,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:23,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:23,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297527330] [2024-11-27 23:27:23,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:23,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:23,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:23,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:23,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:23,749 INFO L87 Difference]: Start difference. First operand 38185 states and 62250 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-11-27 23:27:24,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:24,113 INFO L93 Difference]: Finished difference Result 83692 states and 137539 transitions. [2024-11-27 23:27:24,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:24,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2024-11-27 23:27:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:24,257 INFO L225 Difference]: With dead ends: 83692 [2024-11-27 23:27:24,257 INFO L226 Difference]: Without dead ends: 56811 [2024-11-27 23:27:24,289 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 [2024-11-27 23:27:24,290 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 205 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:24,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1203 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:24,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56811 states. [2024-11-27 23:27:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56811 to 56809. [2024-11-27 23:27:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56809 states, 56808 states have (on average 1.63212927756654) internal successors, (92718), 56808 states have internal predecessors, (92718), 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) [2024-11-27 23:27:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56809 states to 56809 states and 92718 transitions. [2024-11-27 23:27:25,466 INFO L78 Accepts]: Start accepts. Automaton has 56809 states and 92718 transitions. Word has length 125 [2024-11-27 23:27:25,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:25,466 INFO L471 AbstractCegarLoop]: Abstraction has 56809 states and 92718 transitions. [2024-11-27 23:27:25,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-11-27 23:27:25,467 INFO L276 IsEmpty]: Start isEmpty. Operand 56809 states and 92718 transitions. [2024-11-27 23:27:25,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 23:27:25,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:25,469 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:25,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:27:25,469 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:25,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:25,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1381723230, now seen corresponding path program 1 times [2024-11-27 23:27:25,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:25,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685845020] [2024-11-27 23:27:25,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:25,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:25,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:25,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685845020] [2024-11-27 23:27:25,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685845020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:25,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:25,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:25,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020431422] [2024-11-27 23:27:25,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:25,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:25,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:25,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:25,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:25,697 INFO L87 Difference]: Start difference. First operand 56809 states and 92718 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-11-27 23:27:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:27,033 INFO L93 Difference]: Finished difference Result 182062 states and 297983 transitions. [2024-11-27 23:27:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:27,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 126 [2024-11-27 23:27:27,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:27,546 INFO L225 Difference]: With dead ends: 182062 [2024-11-27 23:27:27,546 INFO L226 Difference]: Without dead ends: 125497 [2024-11-27 23:27:27,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:27,586 INFO L435 NwaCegarLoop]: 525 mSDtfsCounter, 652 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:27,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1766 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:27:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125497 states. [2024-11-27 23:27:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125497 to 90928. [2024-11-27 23:27:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90928 states, 90927 states have (on average 1.6284601933419116) internal successors, (148071), 90927 states have internal predecessors, (148071), 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) [2024-11-27 23:27:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90928 states to 90928 states and 148071 transitions. [2024-11-27 23:27:29,858 INFO L78 Accepts]: Start accepts. Automaton has 90928 states and 148071 transitions. Word has length 126 [2024-11-27 23:27:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:29,859 INFO L471 AbstractCegarLoop]: Abstraction has 90928 states and 148071 transitions. [2024-11-27 23:27:29,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-11-27 23:27:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 90928 states and 148071 transitions. [2024-11-27 23:27:29,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-27 23:27:29,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:29,861 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:29,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:27:29,862 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:29,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:29,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2086532755, now seen corresponding path program 1 times [2024-11-27 23:27:29,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:29,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042397752] [2024-11-27 23:27:29,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:29,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:30,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:30,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042397752] [2024-11-27 23:27:30,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042397752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:30,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:30,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:30,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220733566] [2024-11-27 23:27:30,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:30,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:30,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:30,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:30,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:30,677 INFO L87 Difference]: Start difference. First operand 90928 states and 148071 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2024-11-27 23:27:31,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:31,556 INFO L93 Difference]: Finished difference Result 181614 states and 295752 transitions. [2024-11-27 23:27:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:31,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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 128 [2024-11-27 23:27:31,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:31,725 INFO L225 Difference]: With dead ends: 181614 [2024-11-27 23:27:31,725 INFO L226 Difference]: Without dead ends: 90930 [2024-11-27 23:27:31,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:27:31,773 INFO L435 NwaCegarLoop]: 531 mSDtfsCounter, 381 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:31,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 2040 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:31,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90930 states. [2024-11-27 23:27:33,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90930 to 90928. [2024-11-27 23:27:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90928 states, 90927 states have (on average 1.6215865474501523) internal successors, (147446), 90927 states have internal predecessors, (147446), 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) [2024-11-27 23:27:33,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90928 states to 90928 states and 147446 transitions. [2024-11-27 23:27:33,804 INFO L78 Accepts]: Start accepts. Automaton has 90928 states and 147446 transitions. Word has length 128 [2024-11-27 23:27:33,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:33,804 INFO L471 AbstractCegarLoop]: Abstraction has 90928 states and 147446 transitions. [2024-11-27 23:27:33,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2024-11-27 23:27:33,805 INFO L276 IsEmpty]: Start isEmpty. Operand 90928 states and 147446 transitions. [2024-11-27 23:27:33,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-27 23:27:33,806 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:33,806 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:33,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:27:33,806 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:33,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1082243879, now seen corresponding path program 1 times [2024-11-27 23:27:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:33,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972654906] [2024-11-27 23:27:33,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:34,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:34,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972654906] [2024-11-27 23:27:34,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972654906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:34,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:34,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:34,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119874974] [2024-11-27 23:27:34,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:34,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:34,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:34,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:34,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:34,305 INFO L87 Difference]: Start difference. First operand 90928 states and 147446 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2024-11-27 23:27:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:35,622 INFO L93 Difference]: Finished difference Result 265772 states and 431468 transitions. [2024-11-27 23:27:35,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:35,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 131 [2024-11-27 23:27:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:35,949 INFO L225 Difference]: With dead ends: 265772 [2024-11-27 23:27:35,949 INFO L226 Difference]: Without dead ends: 175088 [2024-11-27 23:27:36,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:27:36,026 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 190 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:36,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 2562 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175088 states. [2024-11-27 23:27:38,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175088 to 175086. [2024-11-27 23:27:38,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175086 states, 175085 states have (on average 1.6129023045949111) internal successors, (282395), 175085 states have internal predecessors, (282395), 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) [2024-11-27 23:27:38,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175086 states to 175086 states and 282395 transitions. [2024-11-27 23:27:38,745 INFO L78 Accepts]: Start accepts. Automaton has 175086 states and 282395 transitions. Word has length 131 [2024-11-27 23:27:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:38,746 INFO L471 AbstractCegarLoop]: Abstraction has 175086 states and 282395 transitions. [2024-11-27 23:27:38,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2024-11-27 23:27:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand 175086 states and 282395 transitions. [2024-11-27 23:27:38,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-27 23:27:38,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:38,747 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:38,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:27:38,747 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:38,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:38,748 INFO L85 PathProgramCache]: Analyzing trace with hash -812087216, now seen corresponding path program 1 times [2024-11-27 23:27:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552200302] [2024-11-27 23:27:38,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:39,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552200302] [2024-11-27 23:27:39,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552200302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:39,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:39,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:27:39,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839165086] [2024-11-27 23:27:39,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:39,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:27:39,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:39,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:27:39,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:39,904 INFO L87 Difference]: Start difference. First operand 175086 states and 282395 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2024-11-27 23:27:40,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:40,428 INFO L93 Difference]: Finished difference Result 178960 states and 288204 transitions. [2024-11-27 23:27:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:40,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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 132 [2024-11-27 23:27:40,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:40,639 INFO L225 Difference]: With dead ends: 178960 [2024-11-27 23:27:40,639 INFO L226 Difference]: Without dead ends: 178958 [2024-11-27 23:27:40,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:40,678 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 0 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:40,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:40,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178958 states. [2024-11-27 23:27:43,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178958 to 178958. [2024-11-27 23:27:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178958 states, 178957 states have (on average 1.5994903803707037) internal successors, (286240), 178957 states have internal predecessors, (286240), 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) [2024-11-27 23:27:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178958 states to 178958 states and 286240 transitions. [2024-11-27 23:27:43,836 INFO L78 Accepts]: Start accepts. Automaton has 178958 states and 286240 transitions. Word has length 132 [2024-11-27 23:27:43,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:43,837 INFO L471 AbstractCegarLoop]: Abstraction has 178958 states and 286240 transitions. [2024-11-27 23:27:43,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2024-11-27 23:27:43,837 INFO L276 IsEmpty]: Start isEmpty. Operand 178958 states and 286240 transitions. [2024-11-27 23:27:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-27 23:27:43,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:43,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:43,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:27:43,852 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:43,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:43,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1146801810, now seen corresponding path program 1 times [2024-11-27 23:27:43,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:43,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216930899] [2024-11-27 23:27:43,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:43,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:27:44,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:44,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216930899] [2024-11-27 23:27:44,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216930899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:44,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:44,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:44,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463526486] [2024-11-27 23:27:44,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:44,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:44,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:44,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:44,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:44,251 INFO L87 Difference]: Start difference. First operand 178958 states and 286240 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2024-11-27 23:27:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:46,788 INFO L93 Difference]: Finished difference Result 487720 states and 782945 transitions. [2024-11-27 23:27:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:46,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 163 [2024-11-27 23:27:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:47,419 INFO L225 Difference]: With dead ends: 487720 [2024-11-27 23:27:47,419 INFO L226 Difference]: Without dead ends: 409068 [2024-11-27 23:27:47,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:27:47,541 INFO L435 NwaCegarLoop]: 749 mSDtfsCounter, 1423 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:47,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 2705 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:47,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409068 states. [2024-11-27 23:27:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409068 to 287506. [2024-11-27 23:27:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287506 states, 287505 states have (on average 1.5981913358028557) internal successors, (459488), 287505 states have internal predecessors, (459488), 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) [2024-11-27 23:27:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287506 states to 287506 states and 459488 transitions. [2024-11-27 23:27:53,781 INFO L78 Accepts]: Start accepts. Automaton has 287506 states and 459488 transitions. Word has length 163 [2024-11-27 23:27:53,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:53,781 INFO L471 AbstractCegarLoop]: Abstraction has 287506 states and 459488 transitions. [2024-11-27 23:27:53,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2024-11-27 23:27:53,782 INFO L276 IsEmpty]: Start isEmpty. Operand 287506 states and 459488 transitions. [2024-11-27 23:27:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-27 23:27:53,785 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:53,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:53,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:27:53,785 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:53,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1437847802, now seen corresponding path program 1 times [2024-11-27 23:27:53,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:53,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871090975] [2024-11-27 23:27:53,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:53,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:27:55,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:55,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871090975] [2024-11-27 23:27:55,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871090975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:55,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:55,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258993448] [2024-11-27 23:27:55,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:55,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:55,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:55,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:55,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:55,108 INFO L87 Difference]: Start difference. First operand 287506 states and 459488 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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) [2024-11-27 23:27:57,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:57,602 INFO L93 Difference]: Finished difference Result 518940 states and 833205 transitions. [2024-11-27 23:27:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:57,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 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 163 [2024-11-27 23:27:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:58,250 INFO L225 Difference]: With dead ends: 518940 [2024-11-27 23:27:58,250 INFO L226 Difference]: Without dead ends: 440288 [2024-11-27 23:27:58,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:27:58,317 INFO L435 NwaCegarLoop]: 752 mSDtfsCounter, 1394 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:58,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 3051 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:58,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440288 states.