./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pipeline.cil-1.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_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/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_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/pipeline.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/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_81106fb2-41c6-4965-9d21-fd89d8474381/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 79bbe68806c3ba3852cd8c209d4ce80dca551636a131cc65daaf97524d927c63 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:21:02,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:21:02,887 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:21:02,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:21:02,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:21:02,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:21:02,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:21:02,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:21:02,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:21:02,945 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:21:02,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:21:02,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:21:02,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:21:02,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:21:02,948 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:21:02,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:21:02,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:21:02,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:21:02,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:21:02,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:21:02,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:21:02,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:21:02,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:21:02,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:21:02,949 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:21:02,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:21:02,949 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:21:02,949 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:21:02,950 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:21:02,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:21:02,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:21:02,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:21:02,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:02,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:21:02,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:21:02,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:21:02,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:21:02,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:02,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:21:02,952 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:21:02,953 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:21:02,953 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:21:02,953 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:21:02,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:21:02,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:21:02,954 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:21:02,954 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:21:02,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:21:02,954 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_81106fb2-41c6-4965-9d21-fd89d8474381/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 -> 79bbe68806c3ba3852cd8c209d4ce80dca551636a131cc65daaf97524d927c63 [2024-11-27 20:21:03,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:21:03,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:21:03,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:21:03,358 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:21:03,358 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:21:03,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/systemc/pipeline.cil-1.c [2024-11-27 20:21:07,050 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/data/22cb14198/972c4211cfa64b06a52366e8deae89da/FLAGf219caf98 [2024-11-27 20:21:07,391 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:21:07,392 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/sv-benchmarks/c/systemc/pipeline.cil-1.c [2024-11-27 20:21:07,407 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/data/22cb14198/972c4211cfa64b06a52366e8deae89da/FLAGf219caf98 [2024-11-27 20:21:07,424 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/data/22cb14198/972c4211cfa64b06a52366e8deae89da [2024-11-27 20:21:07,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:21:07,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:21:07,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:21:07,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:21:07,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:21:07,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:21:07" (1/1) ... [2024-11-27 20:21:07,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5665bdc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:07, skipping insertion in model container [2024-11-27 20:21:07,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:21:07" (1/1) ... [2024-11-27 20:21:07,483 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:21:07,689 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_81106fb2-41c6-4965-9d21-fd89d8474381/sv-benchmarks/c/systemc/pipeline.cil-1.c[640,653] [2024-11-27 20:21:07,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:21:07,856 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:21:07,874 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_81106fb2-41c6-4965-9d21-fd89d8474381/sv-benchmarks/c/systemc/pipeline.cil-1.c[640,653] [2024-11-27 20:21:07,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:21:08,003 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:21:08,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08 WrapperNode [2024-11-27 20:21:08,004 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:21:08,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:21:08,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:21:08,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:21:08,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,075 INFO L138 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 423 [2024-11-27 20:21:08,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:21:08,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:21:08,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:21:08,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:21:08,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,093 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,129 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 20:21:08,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,141 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,166 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:21:08,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:21:08,168 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:21:08,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:21:08,169 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (1/1) ... [2024-11-27 20:21:08,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:21:08,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:08,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:21:08,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:21:08,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:21:08,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:21:08,258 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2024-11-27 20:21:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2024-11-27 20:21:08,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:21:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:21:08,380 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:21:08,382 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:21:09,227 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-27 20:21:09,228 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:21:09,249 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:21:09,250 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-27 20:21:09,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:09 BoogieIcfgContainer [2024-11-27 20:21:09,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:21:09,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:21:09,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:21:09,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:21:09,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:21:07" (1/3) ... [2024-11-27 20:21:09,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1a6b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:21:09, skipping insertion in model container [2024-11-27 20:21:09,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:21:08" (2/3) ... [2024-11-27 20:21:09,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1a6b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:21:09, skipping insertion in model container [2024-11-27 20:21:09,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:21:09" (3/3) ... [2024-11-27 20:21:09,265 INFO L128 eAbstractionObserver]: Analyzing ICFG pipeline.cil-1.c [2024-11-27 20:21:09,285 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:21:09,290 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pipeline.cil-1.c that has 2 procedures, 154 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-27 20:21:09,384 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:21:09,403 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;@590331, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:21:09,403 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:21:09,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 148 states have (on average 1.7972972972972974) internal successors, (266), 150 states have internal predecessors, (266), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:21:09,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-27 20:21:09,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:09,425 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:09,426 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:09,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:09,432 INFO L85 PathProgramCache]: Analyzing trace with hash 949561369, now seen corresponding path program 1 times [2024-11-27 20:21:09,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:09,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310672884] [2024-11-27 20:21:09,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:09,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:10,286 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:10,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:10,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310672884] [2024-11-27 20:21:10,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310672884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:10,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565327512] [2024-11-27 20:21:10,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:10,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:10,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:10,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:10,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:21:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:10,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:21:10,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:21:10,670 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:10,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565327512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:10,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:10,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2024-11-27 20:21:10,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147575283] [2024-11-27 20:21:10,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:10,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:21:10,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:10,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:21:10,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:21:10,703 INFO L87 Difference]: Start difference. First operand has 154 states, 148 states have (on average 1.7972972972972974) internal successors, (266), 150 states have internal predecessors, (266), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:10,751 INFO L93 Difference]: Finished difference Result 300 states and 539 transitions. [2024-11-27 20:21:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:21:10,754 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 93 [2024-11-27 20:21:10,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:10,765 INFO L225 Difference]: With dead ends: 300 [2024-11-27 20:21:10,765 INFO L226 Difference]: Without dead ends: 149 [2024-11-27 20:21:10,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:21:10,774 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:10,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:10,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-27 20:21:10,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-27 20:21:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.7708333333333333) internal successors, (255), 145 states have internal predecessors, (255), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:21:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 261 transitions. [2024-11-27 20:21:10,852 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 261 transitions. Word has length 93 [2024-11-27 20:21:10,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:10,856 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 261 transitions. [2024-11-27 20:21:10,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:10,856 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 261 transitions. [2024-11-27 20:21:10,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:10,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:10,873 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:10,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:11,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:11,074 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:11,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:11,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1751309847, now seen corresponding path program 1 times [2024-11-27 20:21:11,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:11,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264389702] [2024-11-27 20:21:11,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:11,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:11,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:11,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264389702] [2024-11-27 20:21:11,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264389702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:11,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152926853] [2024-11-27 20:21:11,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:11,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:11,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:11,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:11,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:21:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:12,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:12,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-27 20:21:12,126 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:12,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152926853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:12,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:12,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:12,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285095865] [2024-11-27 20:21:12,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:12,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:12,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:12,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:12,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:12,135 INFO L87 Difference]: Start difference. First operand 149 states and 261 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:12,196 INFO L93 Difference]: Finished difference Result 295 states and 521 transitions. [2024-11-27 20:21:12,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:12,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:12,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:12,200 INFO L225 Difference]: With dead ends: 295 [2024-11-27 20:21:12,204 INFO L226 Difference]: Without dead ends: 149 [2024-11-27 20:21:12,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:12,211 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 245 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:12,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 259 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-27 20:21:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-27 20:21:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.7638888888888888) internal successors, (254), 145 states have internal predecessors, (254), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:21:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 260 transitions. [2024-11-27 20:21:12,237 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 260 transitions. Word has length 183 [2024-11-27 20:21:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:12,238 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 260 transitions. [2024-11-27 20:21:12,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 260 transitions. [2024-11-27 20:21:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:12,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:12,245 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:12,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:21:12,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-27 20:21:12,447 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:12,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:12,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2094065705, now seen corresponding path program 1 times [2024-11-27 20:21:12,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405619103] [2024-11-27 20:21:12,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:12,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:12,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:12,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405619103] [2024-11-27 20:21:12,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405619103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:12,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355208451] [2024-11-27 20:21:12,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:12,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:12,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:12,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:12,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:21:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:13,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:13,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:13,271 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-27 20:21:13,271 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:13,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355208451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:13,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:13,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:13,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38598577] [2024-11-27 20:21:13,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:13,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:13,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:13,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:13,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:13,280 INFO L87 Difference]: Start difference. First operand 149 states and 260 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:13,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:13,319 INFO L93 Difference]: Finished difference Result 295 states and 519 transitions. [2024-11-27 20:21:13,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:13,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:13,323 INFO L225 Difference]: With dead ends: 295 [2024-11-27 20:21:13,326 INFO L226 Difference]: Without dead ends: 149 [2024-11-27 20:21:13,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:13,329 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 243 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:13,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 258 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:13,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-27 20:21:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-27 20:21:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 145 states have internal predecessors, (253), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:21:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 259 transitions. [2024-11-27 20:21:13,356 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 259 transitions. Word has length 183 [2024-11-27 20:21:13,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:13,356 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 259 transitions. [2024-11-27 20:21:13,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:13,358 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 259 transitions. [2024-11-27 20:21:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:13,363 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:13,363 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:13,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:21:13,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:13,566 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:13,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:13,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1525373417, now seen corresponding path program 1 times [2024-11-27 20:21:13,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:13,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618377997] [2024-11-27 20:21:13,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:13,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:13,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:13,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618377997] [2024-11-27 20:21:13,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618377997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:13,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591954328] [2024-11-27 20:21:13,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:13,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:13,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:13,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:13,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:21:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:14,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:14,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-27 20:21:14,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:14,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591954328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:14,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:14,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:14,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199931726] [2024-11-27 20:21:14,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:14,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:14,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:14,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:14,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:14,294 INFO L87 Difference]: Start difference. First operand 149 states and 259 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:14,323 INFO L93 Difference]: Finished difference Result 295 states and 517 transitions. [2024-11-27 20:21:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:14,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:14,326 INFO L225 Difference]: With dead ends: 295 [2024-11-27 20:21:14,327 INFO L226 Difference]: Without dead ends: 149 [2024-11-27 20:21:14,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:14,330 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 246 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:14,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 257 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:14,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-27 20:21:14,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-27 20:21:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.75) internal successors, (252), 145 states have internal predecessors, (252), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:21:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 258 transitions. [2024-11-27 20:21:14,352 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 258 transitions. Word has length 183 [2024-11-27 20:21:14,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:14,353 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 258 transitions. [2024-11-27 20:21:14,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 258 transitions. [2024-11-27 20:21:14,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:14,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:14,358 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:14,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:21:14,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:14,560 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:14,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash -554243159, now seen corresponding path program 1 times [2024-11-27 20:21:14,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:14,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647681210] [2024-11-27 20:21:14,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:14,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:14,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:14,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647681210] [2024-11-27 20:21:14,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647681210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:14,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147576212] [2024-11-27 20:21:14,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:14,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:14,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:14,896 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:14,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:21:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:15,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:15,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-27 20:21:15,248 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:15,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147576212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:15,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:15,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:15,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802267640] [2024-11-27 20:21:15,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:15,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:15,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:15,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:15,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:15,251 INFO L87 Difference]: Start difference. First operand 149 states and 258 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:15,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:15,270 INFO L93 Difference]: Finished difference Result 295 states and 515 transitions. [2024-11-27 20:21:15,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:15,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:15,273 INFO L225 Difference]: With dead ends: 295 [2024-11-27 20:21:15,273 INFO L226 Difference]: Without dead ends: 149 [2024-11-27 20:21:15,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:15,275 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 243 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:15,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 256 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-27 20:21:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-27 20:21:15,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.7430555555555556) internal successors, (251), 145 states have internal predecessors, (251), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:21:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 257 transitions. [2024-11-27 20:21:15,308 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 257 transitions. Word has length 183 [2024-11-27 20:21:15,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:15,309 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 257 transitions. [2024-11-27 20:21:15,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 257 transitions. [2024-11-27 20:21:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:15,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:15,312 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:15,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:15,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:15,520 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:15,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:15,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1606685335, now seen corresponding path program 1 times [2024-11-27 20:21:15,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:15,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886139162] [2024-11-27 20:21:15,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:15,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:15,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:15,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886139162] [2024-11-27 20:21:15,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886139162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:15,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084599476] [2024-11-27 20:21:15,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:15,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:15,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:15,801 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:15,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:21:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:16,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:16,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-27 20:21:16,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:16,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084599476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:16,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:16,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:16,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895658416] [2024-11-27 20:21:16,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:16,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:16,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:16,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:16,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:16,146 INFO L87 Difference]: Start difference. First operand 149 states and 257 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:16,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:16,177 INFO L93 Difference]: Finished difference Result 295 states and 513 transitions. [2024-11-27 20:21:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:16,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:16,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:16,180 INFO L225 Difference]: With dead ends: 295 [2024-11-27 20:21:16,180 INFO L226 Difference]: Without dead ends: 149 [2024-11-27 20:21:16,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:16,183 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 243 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:16,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 255 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:16,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-27 20:21:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-27 20:21:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 145 states have internal predecessors, (250), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:21:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 256 transitions. [2024-11-27 20:21:16,207 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 256 transitions. Word has length 183 [2024-11-27 20:21:16,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:16,207 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 256 transitions. [2024-11-27 20:21:16,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:16,207 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 256 transitions. [2024-11-27 20:21:16,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:16,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:16,214 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:16,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:21:16,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:16,415 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:16,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash 127345577, now seen corresponding path program 1 times [2024-11-27 20:21:16,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:16,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469595157] [2024-11-27 20:21:16,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:16,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:16,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:16,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469595157] [2024-11-27 20:21:16,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469595157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:16,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307391606] [2024-11-27 20:21:16,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:16,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:16,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:16,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:16,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:21:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:17,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:17,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 20:21:17,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:17,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307391606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:17,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:17,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:17,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969067698] [2024-11-27 20:21:17,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:17,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:17,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:17,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:17,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:17,164 INFO L87 Difference]: Start difference. First operand 149 states and 256 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:17,234 INFO L93 Difference]: Finished difference Result 441 states and 770 transitions. [2024-11-27 20:21:17,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:17,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:17,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:17,240 INFO L225 Difference]: With dead ends: 441 [2024-11-27 20:21:17,241 INFO L226 Difference]: Without dead ends: 295 [2024-11-27 20:21:17,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:17,244 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 223 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:17,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 501 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:17,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-27 20:21:17,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2024-11-27 20:21:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 285 states have (on average 1.7298245614035088) internal successors, (493), 286 states have internal predecessors, (493), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-27 20:21:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 508 transitions. [2024-11-27 20:21:17,288 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 508 transitions. Word has length 183 [2024-11-27 20:21:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:17,289 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 508 transitions. [2024-11-27 20:21:17,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 508 transitions. [2024-11-27 20:21:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:17,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:17,298 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:17,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:17,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:17,498 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:17,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:17,499 INFO L85 PathProgramCache]: Analyzing trace with hash -556413591, now seen corresponding path program 1 times [2024-11-27 20:21:17,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:17,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103083884] [2024-11-27 20:21:17,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:17,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:17,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:17,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103083884] [2024-11-27 20:21:17,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103083884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:17,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395686768] [2024-11-27 20:21:17,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:17,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:17,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:17,826 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:17,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:21:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:18,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:18,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 20:21:18,162 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:18,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395686768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:18,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:18,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:18,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139134046] [2024-11-27 20:21:18,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:18,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:18,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:18,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:18,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:18,164 INFO L87 Difference]: Start difference. First operand 293 states and 508 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:18,246 INFO L93 Difference]: Finished difference Result 873 states and 1550 transitions. [2024-11-27 20:21:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:18,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:18,257 INFO L225 Difference]: With dead ends: 873 [2024-11-27 20:21:18,257 INFO L226 Difference]: Without dead ends: 583 [2024-11-27 20:21:18,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:18,263 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 223 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:18,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 501 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:18,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-27 20:21:18,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2024-11-27 20:21:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 567 states have (on average 1.7195767195767195) internal successors, (975), 568 states have internal predecessors, (975), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (36), 8 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-27 20:21:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 1020 transitions. [2024-11-27 20:21:18,323 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 1020 transitions. Word has length 183 [2024-11-27 20:21:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:18,323 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 1020 transitions. [2024-11-27 20:21:18,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 1020 transitions. [2024-11-27 20:21:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:18,332 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:18,332 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:18,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:21:18,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:18,534 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:18,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:18,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1341380823, now seen corresponding path program 1 times [2024-11-27 20:21:18,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:18,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577103613] [2024-11-27 20:21:18,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:18,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:18,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577103613] [2024-11-27 20:21:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577103613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:18,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936300471] [2024-11-27 20:21:18,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:18,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:18,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:18,851 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:18,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:21:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:19,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:19,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 20:21:19,212 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:19,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936300471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:19,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:19,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:19,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533047766] [2024-11-27 20:21:19,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:19,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:19,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:19,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:19,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:19,215 INFO L87 Difference]: Start difference. First operand 581 states and 1020 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:19,345 INFO L93 Difference]: Finished difference Result 1737 states and 3182 transitions. [2024-11-27 20:21:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:19,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:19,363 INFO L225 Difference]: With dead ends: 1737 [2024-11-27 20:21:19,363 INFO L226 Difference]: Without dead ends: 1159 [2024-11-27 20:21:19,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:19,379 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 223 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:19,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 501 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-27 20:21:19,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2024-11-27 20:21:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1131 states have (on average 1.707338638373121) internal successors, (1931), 1132 states have internal predecessors, (1931), 17 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (136), 16 states have call predecessors, (136), 17 states have call successors, (136) [2024-11-27 20:21:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 2084 transitions. [2024-11-27 20:21:19,483 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 2084 transitions. Word has length 183 [2024-11-27 20:21:19,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:19,484 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 2084 transitions. [2024-11-27 20:21:19,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 2084 transitions. [2024-11-27 20:21:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:19,505 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:19,505 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:19,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:19,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:19,706 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:19,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1623382231, now seen corresponding path program 1 times [2024-11-27 20:21:19,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:19,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784295281] [2024-11-27 20:21:19,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:19,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:19,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784295281] [2024-11-27 20:21:19,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784295281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:19,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604240986] [2024-11-27 20:21:19,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:19,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:19,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:19,980 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:19,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:21:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:20,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:20,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-27 20:21:20,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:20,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604240986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:20,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:20,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:20,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344344554] [2024-11-27 20:21:20,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:20,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:20,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:20,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:20,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:20,319 INFO L87 Difference]: Start difference. First operand 1157 states and 2084 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:20,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:20,563 INFO L93 Difference]: Finished difference Result 3465 states and 6758 transitions. [2024-11-27 20:21:20,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:20,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:20,612 INFO L225 Difference]: With dead ends: 3465 [2024-11-27 20:21:20,613 INFO L226 Difference]: Without dead ends: 2311 [2024-11-27 20:21:20,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:20,654 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 223 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:20,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 501 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:20,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2024-11-27 20:21:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2309. [2024-11-27 20:21:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2259 states have (on average 1.6941124391323594) internal successors, (3827), 2260 states have internal predecessors, (3827), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (528), 32 states have call predecessors, (528), 33 states have call successors, (528) [2024-11-27 20:21:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 4388 transitions. [2024-11-27 20:21:20,879 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 4388 transitions. Word has length 183 [2024-11-27 20:21:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:20,880 INFO L471 AbstractCegarLoop]: Abstraction has 2309 states and 4388 transitions. [2024-11-27 20:21:20,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:20,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 4388 transitions. [2024-11-27 20:21:20,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:20,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:20,994 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:21,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:21,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:21:21,195 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:21,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2048121047, now seen corresponding path program 1 times [2024-11-27 20:21:21,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:21,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501709332] [2024-11-27 20:21:21,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:21,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:21,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:21,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501709332] [2024-11-27 20:21:21,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501709332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:21,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809410639] [2024-11-27 20:21:21,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:21,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:21,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:21,501 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:21,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:21:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:21,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:21,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-27 20:21:21,815 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:21,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809410639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:21,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:21,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:21,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368262650] [2024-11-27 20:21:21,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:21,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:21,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:21,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:21,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:21,820 INFO L87 Difference]: Start difference. First operand 2309 states and 4388 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:22,240 INFO L93 Difference]: Finished difference Result 6921 states and 15206 transitions. [2024-11-27 20:21:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:22,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:22,431 INFO L225 Difference]: With dead ends: 6921 [2024-11-27 20:21:22,431 INFO L226 Difference]: Without dead ends: 4615 [2024-11-27 20:21:22,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:22,528 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 224 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:22,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 499 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:22,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2024-11-27 20:21:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 4613. [2024-11-27 20:21:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4613 states, 4515 states have (on average 1.6803986710963454) internal successors, (7587), 4516 states have internal predecessors, (7587), 65 states have call successors, (65), 32 states have call predecessors, (65), 32 states have return successors, (2080), 64 states have call predecessors, (2080), 65 states have call successors, (2080) [2024-11-27 20:21:23,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 9732 transitions. [2024-11-27 20:21:23,157 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 9732 transitions. Word has length 183 [2024-11-27 20:21:23,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:23,159 INFO L471 AbstractCegarLoop]: Abstraction has 4613 states and 9732 transitions. [2024-11-27 20:21:23,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:23,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 9732 transitions. [2024-11-27 20:21:23,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:23,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:23,376 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:23,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:23,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:21:23,577 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:23,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:23,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1923274967, now seen corresponding path program 1 times [2024-11-27 20:21:23,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:23,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949493381] [2024-11-27 20:21:23,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:23,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:23,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:23,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949493381] [2024-11-27 20:21:23,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949493381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:23,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188851410] [2024-11-27 20:21:23,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:23,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:23,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:23,905 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:23,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:21:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:24,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:24,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 20:21:24,328 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:24,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188851410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:24,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:24,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:24,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688029959] [2024-11-27 20:21:24,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:24,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:24,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:24,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:24,331 INFO L87 Difference]: Start difference. First operand 4613 states and 9732 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:25,524 INFO L93 Difference]: Finished difference Result 13833 states and 37382 transitions. [2024-11-27 20:21:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:25,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:25,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:26,203 INFO L225 Difference]: With dead ends: 13833 [2024-11-27 20:21:26,203 INFO L226 Difference]: Without dead ends: 9223 [2024-11-27 20:21:26,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:26,621 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 225 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:26,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 499 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:21:26,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9223 states. [2024-11-27 20:21:28,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9223 to 9221. [2024-11-27 20:21:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9221 states, 9027 states have (on average 1.666445109117093) internal successors, (15043), 9028 states have internal predecessors, (15043), 129 states have call successors, (129), 64 states have call predecessors, (129), 64 states have return successors, (8256), 128 states have call predecessors, (8256), 129 states have call successors, (8256) [2024-11-27 20:21:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9221 states to 9221 states and 23428 transitions. [2024-11-27 20:21:28,573 INFO L78 Accepts]: Start accepts. Automaton has 9221 states and 23428 transitions. Word has length 183 [2024-11-27 20:21:28,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:28,574 INFO L471 AbstractCegarLoop]: Abstraction has 9221 states and 23428 transitions. [2024-11-27 20:21:28,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 9221 states and 23428 transitions. [2024-11-27 20:21:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:29,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:29,073 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:29,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 20:21:29,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:21:29,274 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:29,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1405888297, now seen corresponding path program 1 times [2024-11-27 20:21:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:29,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750568838] [2024-11-27 20:21:29,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:29,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:29,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:29,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750568838] [2024-11-27 20:21:29,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750568838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:29,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636886807] [2024-11-27 20:21:29,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:29,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:29,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:29,550 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:29,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:21:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:29,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:29,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 20:21:29,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:29,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636886807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:29,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:29,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:29,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664144715] [2024-11-27 20:21:29,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:29,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:29,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:29,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:29,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:29,903 INFO L87 Difference]: Start difference. First operand 9221 states and 23428 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:34,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:34,565 INFO L93 Difference]: Finished difference Result 27529 states and 102790 transitions. [2024-11-27 20:21:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:21:34,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:21:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:35,738 INFO L225 Difference]: With dead ends: 27529 [2024-11-27 20:21:35,738 INFO L226 Difference]: Without dead ends: 18311 [2024-11-27 20:21:37,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:37,036 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 219 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:37,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 499 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:21:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18311 states. [2024-11-27 20:21:41,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18311 to 18309. [2024-11-27 20:21:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18309 states, 17923 states have (on average 1.6498912012497908) internal successors, (29571), 17924 states have internal predecessors, (29571), 257 states have call successors, (257), 128 states have call predecessors, (257), 128 states have return successors, (32896), 256 states have call predecessors, (32896), 257 states have call successors, (32896) [2024-11-27 20:21:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18309 states to 18309 states and 62724 transitions. [2024-11-27 20:21:43,836 INFO L78 Accepts]: Start accepts. Automaton has 18309 states and 62724 transitions. Word has length 183 [2024-11-27 20:21:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:43,837 INFO L471 AbstractCegarLoop]: Abstraction has 18309 states and 62724 transitions. [2024-11-27 20:21:43,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:21:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 18309 states and 62724 transitions. [2024-11-27 20:21:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:21:46,057 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:46,058 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:46,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-27 20:21:46,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:21:46,259 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:46,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:46,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2088949975, now seen corresponding path program 1 times [2024-11-27 20:21:46,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:46,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260605743] [2024-11-27 20:21:46,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:46,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:21:46,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260605743] [2024-11-27 20:21:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260605743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586731317] [2024-11-27 20:21:46,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:46,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:46,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:46,550 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:46,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81106fb2-41c6-4965-9d21-fd89d8474381/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:21:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:46,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:21:46,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:21:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 20:21:46,886 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:21:46,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586731317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:46,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:21:46,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-27 20:21:46,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864297095] [2024-11-27 20:21:46,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:46,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:21:46,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:46,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:21:46,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:21:46,890 INFO L87 Difference]: Start difference. First operand 18309 states and 62724 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:22:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:22:01,006 INFO L93 Difference]: Finished difference Result 54921 states and 319238 transitions. [2024-11-27 20:22:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:22:01,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 183 [2024-11-27 20:22:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted.