./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/running_example.i --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_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/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_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-data/running_example.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/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_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/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 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:16:43,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:16:43,118 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:16:43,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:16:43,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:16:43,174 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:16:43,175 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:16:43,176 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:16:43,176 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:16:43,176 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:16:43,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:16:43,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:16:43,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:16:43,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:16:43,177 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:16:43,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:16:43,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:16:43,178 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:16:43,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:16:43,178 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:16:43,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:16:43,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:16:43,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:16:43,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:16:43,179 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:16:43,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:16:43,180 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:16:43,180 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:16:43,180 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:16:43,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:16:43,181 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:16:43,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:16:43,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:16:43,181 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:16:43,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:16:43,182 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:16:43,182 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:16:43,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:16:43,182 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:16:43,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:16:43,182 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:16:43,183 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:16:43,183 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:16:43,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:16:43,183 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:16:43,183 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:16:43,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:16:43,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:16:43,184 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_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/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 -> 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f [2024-11-27 20:16:43,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:16:43,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:16:43,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:16:43,603 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:16:43,603 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:16:43,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/heap-data/running_example.i [2024-11-27 20:16:47,176 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/data/169a4caed/47305b9d6f4d4251ae405b8d716aaac7/FLAG94c6356e7 [2024-11-27 20:16:47,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:16:47,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/sv-benchmarks/c/heap-data/running_example.i [2024-11-27 20:16:47,635 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/data/169a4caed/47305b9d6f4d4251ae405b8d716aaac7/FLAG94c6356e7 [2024-11-27 20:16:47,653 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/data/169a4caed/47305b9d6f4d4251ae405b8d716aaac7 [2024-11-27 20:16:47,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:16:47,657 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:16:47,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:16:47,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:16:47,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:16:47,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:16:47" (1/1) ... [2024-11-27 20:16:47,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7867fdaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:47, skipping insertion in model container [2024-11-27 20:16:47,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:16:47" (1/1) ... [2024-11-27 20:16:47,702 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:16:48,141 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_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2024-11-27 20:16:48,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:16:48,160 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:16:48,206 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_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2024-11-27 20:16:48,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:16:48,239 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:16:48,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48 WrapperNode [2024-11-27 20:16:48,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:16:48,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:16:48,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:16:48,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:16:48,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,284 INFO L138 Inliner]: procedures = 121, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-11-27 20:16:48,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:16:48,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:16:48,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:16:48,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:16:48,296 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,299 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,328 INFO L175 MemorySlicer]: Split 15 memory accesses to 2 slices as follows [2, 13]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2024-11-27 20:16:48,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,343 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:16:48,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:16:48,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:16:48,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:16:48,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (1/1) ... [2024-11-27 20:16:48,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:16:48,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:48,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:16:48,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:16:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:16:48,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:16:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:16:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:16:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:16:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:16:48,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:16:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:16:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:16:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:16:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:16:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:16:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:16:48,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:16:48,634 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:16:48,637 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:16:48,836 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-27 20:16:48,836 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:16:48,852 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:16:48,853 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:16:48,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:16:48 BoogieIcfgContainer [2024-11-27 20:16:48,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:16:48,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:16:48,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:16:48,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:16:48,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:16:47" (1/3) ... [2024-11-27 20:16:48,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2461afbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:16:48, skipping insertion in model container [2024-11-27 20:16:48,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:16:48" (2/3) ... [2024-11-27 20:16:48,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2461afbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:16:48, skipping insertion in model container [2024-11-27 20:16:48,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:16:48" (3/3) ... [2024-11-27 20:16:48,872 INFO L128 eAbstractionObserver]: Analyzing ICFG running_example.i [2024-11-27 20:16:48,896 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:16:48,898 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG running_example.i that has 1 procedures, 20 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-27 20:16:48,981 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:16:49,000 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;@39cac50c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:16:49,001 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:16:49,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:49,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 20:16:49,014 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:49,016 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:49,016 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:49,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1345203804, now seen corresponding path program 1 times [2024-11-27 20:16:49,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:49,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862045892] [2024-11-27 20:16:49,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:49,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:49,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:49,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862045892] [2024-11-27 20:16:49,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862045892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:49,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:49,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:16:49,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489607693] [2024-11-27 20:16:49,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:49,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:16:49,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:49,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:16:49,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:16:49,357 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:49,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:49,374 INFO L93 Difference]: Finished difference Result 30 states and 46 transitions. [2024-11-27 20:16:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:16:49,377 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-27 20:16:49,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:49,385 INFO L225 Difference]: With dead ends: 30 [2024-11-27 20:16:49,385 INFO L226 Difference]: Without dead ends: 17 [2024-11-27 20:16:49,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:16:49,398 INFO L435 NwaCegarLoop]: 22 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, 22 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 20:16:49,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:16:49,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-27 20:16:49,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-27 20:16:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-27 20:16:49,442 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2024-11-27 20:16:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:49,443 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-27 20:16:49,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-11-27 20:16:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 20:16:49,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:49,447 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:49,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:16:49,447 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:49,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:49,449 INFO L85 PathProgramCache]: Analyzing trace with hash -250500622, now seen corresponding path program 1 times [2024-11-27 20:16:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:49,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916147011] [2024-11-27 20:16:49,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:49,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:50,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:50,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916147011] [2024-11-27 20:16:50,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916147011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:50,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:50,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:16:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006020128] [2024-11-27 20:16:50,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:50,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:16:50,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:50,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:16:50,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:16:50,041 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:50,248 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2024-11-27 20:16:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:16:50,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-27 20:16:50,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:50,251 INFO L225 Difference]: With dead ends: 44 [2024-11-27 20:16:50,252 INFO L226 Difference]: Without dead ends: 42 [2024-11-27 20:16:50,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:16:50,253 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:50,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 48 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:16:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-27 20:16:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2024-11-27 20:16:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2024-11-27 20:16:50,263 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 11 [2024-11-27 20:16:50,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:50,263 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2024-11-27 20:16:50,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:50,264 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2024-11-27 20:16:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 20:16:50,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:50,265 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:50,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:16:50,265 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:50,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash -250498700, now seen corresponding path program 1 times [2024-11-27 20:16:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:50,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165016607] [2024-11-27 20:16:50,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:50,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:50,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:50,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165016607] [2024-11-27 20:16:50,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165016607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:50,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:50,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:16:50,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838337872] [2024-11-27 20:16:50,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:50,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:16:50,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:50,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:16:50,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:16:50,457 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:50,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:50,616 INFO L93 Difference]: Finished difference Result 63 states and 88 transitions. [2024-11-27 20:16:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:16:50,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-27 20:16:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:50,618 INFO L225 Difference]: With dead ends: 63 [2024-11-27 20:16:50,619 INFO L226 Difference]: Without dead ends: 41 [2024-11-27 20:16:50,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:16:50,623 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:50,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 46 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:16:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-27 20:16:50,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2024-11-27 20:16:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2024-11-27 20:16:50,637 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 11 [2024-11-27 20:16:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:50,641 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2024-11-27 20:16:50,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:50,641 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2024-11-27 20:16:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-27 20:16:50,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:50,642 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:50,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:16:50,642 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:50,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:50,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1759206826, now seen corresponding path program 1 times [2024-11-27 20:16:50,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:50,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267714863] [2024-11-27 20:16:50,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:50,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:51,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:51,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267714863] [2024-11-27 20:16:51,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267714863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:51,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511094474] [2024-11-27 20:16:51,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:51,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:51,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:51,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:51,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:16:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:51,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 20:16:51,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:51,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 20:16:51,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:16:51,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 22 [2024-11-27 20:16:51,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:16:51,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2024-11-27 20:16:51,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:16:52,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:16:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:52,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:52,263 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_102 (Array Int Int)) (v_ArrVal_101 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_18| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_18|) 0)) (< 9 (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_101) |v_ULTIMATE.start_main_~p~0#1.base_18| v_ArrVal_102) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (not (= v_ArrVal_101 (let ((.cse0 (+ |c_ULTIMATE.start_main_~tail~0#1.offset| 4))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse0 (select v_ArrVal_101 .cse0))))))) is different from false [2024-11-27 20:16:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-27 20:16:52,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511094474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:16:52,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:16:52,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2024-11-27 20:16:52,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512893728] [2024-11-27 20:16:52,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:52,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:16:52,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:52,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:16:52,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2024-11-27 20:16:52,448 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:53,115 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2024-11-27 20:16:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:16:53,116 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-27 20:16:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:53,118 INFO L225 Difference]: With dead ends: 91 [2024-11-27 20:16:53,119 INFO L226 Difference]: Without dead ends: 81 [2024-11-27 20:16:53,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=290, Unknown=1, NotChecked=38, Total=462 [2024-11-27 20:16:53,122 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 124 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:53,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 113 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 96 Invalid, 0 Unknown, 88 Unchecked, 0.3s Time] [2024-11-27 20:16:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-27 20:16:53,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 43. [2024-11-27 20:16:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 59 transitions. [2024-11-27 20:16:53,142 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 59 transitions. Word has length 16 [2024-11-27 20:16:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:53,143 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 59 transitions. [2024-11-27 20:16:53,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:53,146 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2024-11-27 20:16:53,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-27 20:16:53,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:53,147 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:53,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:16:53,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-27 20:16:53,348 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:53,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2084157967, now seen corresponding path program 1 times [2024-11-27 20:16:53,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:53,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41041842] [2024-11-27 20:16:53,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:53,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:53,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:53,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41041842] [2024-11-27 20:16:53,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41041842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:53,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948120702] [2024-11-27 20:16:53,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:53,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:53,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:53,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:53,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:16:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:53,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-27 20:16:53,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:53,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-27 20:16:53,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-27 20:16:53,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-27 20:16:54,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-27 20:16:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:54,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:54,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948120702] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:16:54,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:16:54,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-27 20:16:54,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818395703] [2024-11-27 20:16:54,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:54,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:16:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:54,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:16:54,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:16:54,180 INFO L87 Difference]: Start difference. First operand 43 states and 59 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:54,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:54,359 INFO L93 Difference]: Finished difference Result 90 states and 125 transitions. [2024-11-27 20:16:54,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:16:54,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-27 20:16:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:54,364 INFO L225 Difference]: With dead ends: 90 [2024-11-27 20:16:54,364 INFO L226 Difference]: Without dead ends: 68 [2024-11-27 20:16:54,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:16:54,365 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:54,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 66 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:16:54,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-27 20:16:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-27 20:16:54,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2024-11-27 20:16:54,385 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 18 [2024-11-27 20:16:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:54,386 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2024-11-27 20:16:54,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2024-11-27 20:16:54,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 20:16:54,387 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:54,387 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:54,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:16:54,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:54,588 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:54,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:54,589 INFO L85 PathProgramCache]: Analyzing trace with hash 60933499, now seen corresponding path program 1 times [2024-11-27 20:16:54,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:54,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458471064] [2024-11-27 20:16:54,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:54,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:54,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:54,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458471064] [2024-11-27 20:16:54,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458471064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:54,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364369451] [2024-11-27 20:16:54,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:54,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:54,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:54,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:54,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:16:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:55,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-27 20:16:55,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:55,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:16:55,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-27 20:16:55,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:16:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:55,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:55,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:55,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364369451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:16:55,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:16:55,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-27 20:16:55,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941369477] [2024-11-27 20:16:55,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:55,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:16:55,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:55,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:16:55,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:16:55,574 INFO L87 Difference]: Start difference. First operand 66 states and 91 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:56,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:56,140 INFO L93 Difference]: Finished difference Result 163 states and 217 transitions. [2024-11-27 20:16:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:16:56,141 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-27 20:16:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:56,143 INFO L225 Difference]: With dead ends: 163 [2024-11-27 20:16:56,143 INFO L226 Difference]: Without dead ends: 142 [2024-11-27 20:16:56,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2024-11-27 20:16:56,144 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 107 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:56,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 89 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:16:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-27 20:16:56,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132. [2024-11-27 20:16:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3435114503816794) internal successors, (176), 131 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 176 transitions. [2024-11-27 20:16:56,185 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 176 transitions. Word has length 20 [2024-11-27 20:16:56,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:56,185 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 176 transitions. [2024-11-27 20:16:56,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:56,185 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 176 transitions. [2024-11-27 20:16:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 20:16:56,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:56,190 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:56,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:16:56,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:56,395 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:56,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash 740989947, now seen corresponding path program 1 times [2024-11-27 20:16:56,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:56,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673822116] [2024-11-27 20:16:56,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:56,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:16:56,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:56,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673822116] [2024-11-27 20:16:56,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673822116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:56,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:56,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:16:56,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721407011] [2024-11-27 20:16:56,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:56,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:16:56,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:56,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:16:56,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:16:56,614 INFO L87 Difference]: Start difference. First operand 132 states and 176 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:56,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:56,726 INFO L93 Difference]: Finished difference Result 179 states and 238 transitions. [2024-11-27 20:16:56,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:16:56,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-27 20:16:56,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:56,729 INFO L225 Difference]: With dead ends: 179 [2024-11-27 20:16:56,729 INFO L226 Difference]: Without dead ends: 132 [2024-11-27 20:16:56,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:16:56,731 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:56,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:16:56,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-27 20:16:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-27 20:16:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3358778625954197) internal successors, (175), 131 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 175 transitions. [2024-11-27 20:16:56,757 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 175 transitions. Word has length 20 [2024-11-27 20:16:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:56,758 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 175 transitions. [2024-11-27 20:16:56,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 175 transitions. [2024-11-27 20:16:56,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 20:16:56,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:56,759 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:56,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:16:56,759 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:56,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash 337984754, now seen corresponding path program 2 times [2024-11-27 20:16:56,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:56,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939580238] [2024-11-27 20:16:56,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:16:56,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:56,795 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:16:56,795 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:16:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:57,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:57,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939580238] [2024-11-27 20:16:57,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939580238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:57,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534315239] [2024-11-27 20:16:57,408 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:16:57,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:57,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:57,410 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:57,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:16:57,558 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:16:57,558 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:16:57,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 20:16:57,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:57,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 20:16:57,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:16:57,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:16:57,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-27 20:16:57,743 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-27 20:16:57,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-27 20:16:57,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-27 20:16:57,785 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-27 20:16:57,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-27 20:16:57,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:16:57,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2024-11-27 20:16:57,928 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-27 20:16:57,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2024-11-27 20:16:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:57,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:58,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:58,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534315239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:16:58,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:16:58,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-27 20:16:58,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145584249] [2024-11-27 20:16:58,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:58,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:16:58,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:58,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:16:58,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:16:58,308 INFO L87 Difference]: Start difference. First operand 132 states and 175 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:59,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:59,249 INFO L93 Difference]: Finished difference Result 246 states and 336 transitions. [2024-11-27 20:16:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:16:59,250 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-27 20:16:59,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:59,252 INFO L225 Difference]: With dead ends: 246 [2024-11-27 20:16:59,252 INFO L226 Difference]: Without dead ends: 236 [2024-11-27 20:16:59,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=428, Unknown=1, NotChecked=0, Total=600 [2024-11-27 20:16:59,253 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 95 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:59,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 180 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 216 Invalid, 3 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:16:59,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-27 20:16:59,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 127. [2024-11-27 20:16:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.3333333333333333) internal successors, (168), 126 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 168 transitions. [2024-11-27 20:16:59,287 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 168 transitions. Word has length 21 [2024-11-27 20:16:59,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:59,287 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 168 transitions. [2024-11-27 20:16:59,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:16:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 168 transitions. [2024-11-27 20:16:59,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 20:16:59,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:59,289 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:59,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:16:59,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:59,493 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:59,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2078969031, now seen corresponding path program 1 times [2024-11-27 20:16:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:59,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183857060] [2024-11-27 20:16:59,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:00,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:00,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183857060] [2024-11-27 20:17:00,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183857060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:00,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930951412] [2024-11-27 20:17:00,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:00,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:00,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:00,141 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:00,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:17:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:00,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-27 20:17:00,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:00,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 20:17:00,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-27 20:17:00,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-27 20:17:00,391 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 20:17:00,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 69 [2024-11-27 20:17:00,405 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-27 20:17:00,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-27 20:17:00,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-27 20:17:00,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-27 20:17:00,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-11-27 20:17:00,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-27 20:17:00,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-27 20:17:00,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-27 20:17:00,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-27 20:17:00,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:17:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:00,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:00,873 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_391 (Array Int Int))) (< 9 (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_391) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0))))) is different from false [2024-11-27 20:17:00,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:00,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57 [2024-11-27 20:17:00,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:00,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 105 [2024-11-27 20:17:00,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:00,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 78 [2024-11-27 20:17:00,969 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:00,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 60 [2024-11-27 20:17:00,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:00,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 101 [2024-11-27 20:17:01,040 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:01,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 110 [2024-11-27 20:17:01,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2024-11-27 20:17:01,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2024-11-27 20:17:01,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:01,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 50 [2024-11-27 20:17:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-27 20:17:01,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930951412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:17:01,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:17:01,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2024-11-27 20:17:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573483466] [2024-11-27 20:17:01,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:01,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:17:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:17:01,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:17:01,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=142, Unknown=6, NotChecked=24, Total=210 [2024-11-27 20:17:01,594 INFO L87 Difference]: Start difference. First operand 127 states and 168 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:02,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:02,220 INFO L93 Difference]: Finished difference Result 180 states and 236 transitions. [2024-11-27 20:17:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:17:02,220 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-27 20:17:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:02,222 INFO L225 Difference]: With dead ends: 180 [2024-11-27 20:17:02,222 INFO L226 Difference]: Without dead ends: 178 [2024-11-27 20:17:02,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=237, Unknown=6, NotChecked=32, Total=342 [2024-11-27 20:17:02,223 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 100 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:02,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 232 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 253 Invalid, 0 Unknown, 83 Unchecked, 0.4s Time] [2024-11-27 20:17:02,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-27 20:17:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 159. [2024-11-27 20:17:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.3544303797468353) internal successors, (214), 158 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 214 transitions. [2024-11-27 20:17:02,262 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 214 transitions. Word has length 23 [2024-11-27 20:17:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:02,262 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 214 transitions. [2024-11-27 20:17:02,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 214 transitions. [2024-11-27 20:17:02,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 20:17:02,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:02,264 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:17:02,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:17:02,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:02,468 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:02,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:02,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2078967109, now seen corresponding path program 1 times [2024-11-27 20:17:02,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:02,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864814571] [2024-11-27 20:17:02,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:03,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:03,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864814571] [2024-11-27 20:17:03,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864814571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:03,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171175736] [2024-11-27 20:17:03,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:03,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:03,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:03,372 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:03,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:17:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:03,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-27 20:17:03,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:03,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 20:17:03,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-27 20:17:03,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-27 20:17:03,670 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 20:17:03,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 69 [2024-11-27 20:17:03,687 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-27 20:17:03,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-27 20:17:03,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-11-27 20:17:03,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-27 20:17:03,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-27 20:17:03,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-11-27 20:17:03,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-27 20:17:03,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-27 20:17:03,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-27 20:17:03,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:17:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:03,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:04,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:04,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57 [2024-11-27 20:17:04,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:04,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 105 [2024-11-27 20:17:04,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:04,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 78 [2024-11-27 20:17:04,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:04,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 60 [2024-11-27 20:17:04,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:04,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 101 [2024-11-27 20:17:04,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:04,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 110 [2024-11-27 20:17:04,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 57 [2024-11-27 20:17:04,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2024-11-27 20:17:04,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:04,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 50 [2024-11-27 20:17:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:04,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171175736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:17:04,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:17:04,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 17 [2024-11-27 20:17:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725348457] [2024-11-27 20:17:04,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:04,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:17:04,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:17:04,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:17:04,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=222, Unknown=7, NotChecked=0, Total=272 [2024-11-27 20:17:04,951 INFO L87 Difference]: Start difference. First operand 159 states and 214 transitions. Second operand has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:05,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:05,826 INFO L93 Difference]: Finished difference Result 258 states and 350 transitions. [2024-11-27 20:17:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:17:05,826 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-27 20:17:05,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:05,828 INFO L225 Difference]: With dead ends: 258 [2024-11-27 20:17:05,828 INFO L226 Difference]: Without dead ends: 213 [2024-11-27 20:17:05,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=486, Unknown=7, NotChecked=0, Total=600 [2024-11-27 20:17:05,829 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 138 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:05,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 281 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:17:05,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-27 20:17:05,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 191. [2024-11-27 20:17:05,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.3578947368421053) internal successors, (258), 190 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 258 transitions. [2024-11-27 20:17:05,851 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 258 transitions. Word has length 23 [2024-11-27 20:17:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:05,851 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 258 transitions. [2024-11-27 20:17:05,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 258 transitions. [2024-11-27 20:17:05,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-27 20:17:05,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:05,853 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:17:05,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:17:06,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:06,054 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:06,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash 752533699, now seen corresponding path program 1 times [2024-11-27 20:17:06,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:06,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321612167] [2024-11-27 20:17:06,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:06,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:17:06,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:06,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321612167] [2024-11-27 20:17:06,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321612167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:06,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67389249] [2024-11-27 20:17:06,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:06,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:06,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:06,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:06,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:17:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:06,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:17:06,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:06,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-27 20:17:06,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:17:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:17:06,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:06,776 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-27 20:17:06,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2024-11-27 20:17:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:17:06,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67389249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:17:06,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:17:06,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2024-11-27 20:17:06,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818319071] [2024-11-27 20:17:06,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:06,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:17:06,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:17:06,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:17:06,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:17:06,807 INFO L87 Difference]: Start difference. First operand 191 states and 258 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:07,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:07,232 INFO L93 Difference]: Finished difference Result 303 states and 409 transitions. [2024-11-27 20:17:07,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:17:07,233 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-27 20:17:07,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:07,235 INFO L225 Difference]: With dead ends: 303 [2024-11-27 20:17:07,235 INFO L226 Difference]: Without dead ends: 239 [2024-11-27 20:17:07,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:17:07,236 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 99 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:07,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 109 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:17:07,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-27 20:17:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 143. [2024-11-27 20:17:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.3732394366197183) internal successors, (195), 142 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 195 transitions. [2024-11-27 20:17:07,258 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 195 transitions. Word has length 25 [2024-11-27 20:17:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:07,258 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 195 transitions. [2024-11-27 20:17:07,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 195 transitions. [2024-11-27 20:17:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-27 20:17:07,259 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:07,259 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:17:07,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:17:07,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:07,464 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:07,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1432590147, now seen corresponding path program 1 times [2024-11-27 20:17:07,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:07,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545482468] [2024-11-27 20:17:07,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:07,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:17:07,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:07,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545482468] [2024-11-27 20:17:07,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545482468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:07,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999168773] [2024-11-27 20:17:07,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:07,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:07,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:07,774 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:07,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:17:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:07,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:17:07,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:08,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 7 [2024-11-27 20:17:08,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:17:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:17:08,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:08,528 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-27 20:17:08,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 68 [2024-11-27 20:17:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:17:08,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999168773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:17:08,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:17:08,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2024-11-27 20:17:08,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263420672] [2024-11-27 20:17:08,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:08,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:17:08,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:17:08,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:17:08,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:17:08,577 INFO L87 Difference]: Start difference. First operand 143 states and 195 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:08,936 INFO L93 Difference]: Finished difference Result 179 states and 240 transitions. [2024-11-27 20:17:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:17:08,937 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-27 20:17:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:08,938 INFO L225 Difference]: With dead ends: 179 [2024-11-27 20:17:08,938 INFO L226 Difference]: Without dead ends: 152 [2024-11-27 20:17:08,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:17:08,939 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 75 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:08,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 107 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:17:08,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-27 20:17:08,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 139. [2024-11-27 20:17:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.3985507246376812) internal successors, (193), 138 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 193 transitions. [2024-11-27 20:17:08,959 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 193 transitions. Word has length 25 [2024-11-27 20:17:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:08,960 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 193 transitions. [2024-11-27 20:17:08,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 193 transitions. [2024-11-27 20:17:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-27 20:17:08,961 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:08,961 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:17:08,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:17:09,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:17:09,162 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:09,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1432592069, now seen corresponding path program 1 times [2024-11-27 20:17:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:09,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501294454] [2024-11-27 20:17:09,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:09,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:17:09,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:09,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501294454] [2024-11-27 20:17:09,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501294454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:09,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844641049] [2024-11-27 20:17:09,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:09,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:09,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:09,470 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:09,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:17:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:09,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 20:17:09,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:09,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-27 20:17:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:17:10,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:10,317 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-27 20:17:10,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2024-11-27 20:17:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:17:10,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844641049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:17:10,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:17:10,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2024-11-27 20:17:10,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132123838] [2024-11-27 20:17:10,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:10,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 20:17:10,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:17:10,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 20:17:10,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:17:10,333 INFO L87 Difference]: Start difference. First operand 139 states and 193 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:11,148 INFO L93 Difference]: Finished difference Result 383 states and 538 transitions. [2024-11-27 20:17:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 20:17:11,149 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-27 20:17:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:11,152 INFO L225 Difference]: With dead ends: 383 [2024-11-27 20:17:11,153 INFO L226 Difference]: Without dead ends: 319 [2024-11-27 20:17:11,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=389, Invalid=871, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 20:17:11,154 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 117 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:11,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 182 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:17:11,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-27 20:17:11,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 249. [2024-11-27 20:17:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.403225806451613) internal successors, (348), 248 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 348 transitions. [2024-11-27 20:17:11,185 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 348 transitions. Word has length 25 [2024-11-27 20:17:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:11,185 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 348 transitions. [2024-11-27 20:17:11,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 348 transitions. [2024-11-27 20:17:11,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 20:17:11,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:11,188 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:17:11,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:17:11,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:17:11,392 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:11,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1575529743, now seen corresponding path program 2 times [2024-11-27 20:17:11,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:11,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946071654] [2024-11-27 20:17:11,393 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:17:11,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:11,448 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:17:11,448 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:12,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946071654] [2024-11-27 20:17:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946071654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238701691] [2024-11-27 20:17:12,485 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:17:12,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:12,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:12,490 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:12,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:17:12,663 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:17:12,663 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:12,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-27 20:17:12,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:12,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 20:17:12,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:17:12,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-27 20:17:12,765 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-27 20:17:12,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-27 20:17:12,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-27 20:17:12,800 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-27 20:17:12,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-27 20:17:12,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-27 20:17:12,845 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-27 20:17:12,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-27 20:17:13,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:17:13,061 INFO L349 Elim1Store]: treesize reduction 44, result has 10.2 percent of original size [2024-11-27 20:17:13,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 135 treesize of output 102 [2024-11-27 20:17:13,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2024-11-27 20:17:13,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 30 [2024-11-27 20:17:13,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:17:13,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 20:17:13,103 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-27 20:17:13,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-11-27 20:17:13,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:17:13,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 15 [2024-11-27 20:17:13,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-11-27 20:17:13,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-27 20:17:13,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-27 20:17:13,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-27 20:17:13,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-27 20:17:13,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 20:17:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:13,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:13,549 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_822 (Array Int Int))) (< 9 (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_822) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0))))) is different from false [2024-11-27 20:17:13,596 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_71| Int) (v_ArrVal_820 (Array Int Int)) (v_ArrVal_822 (Array Int Int)) (v_ArrVal_813 (Array Int Int)) (v_ArrVal_818 (Array Int Int)) (v_ArrVal_817 (Array Int Int)) (v_ArrVal_814 Int) (v_ArrVal_819 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~tail~0#1.offset| 4))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_71|) 0)) (not (= v_ArrVal_818 (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse0 (select v_ArrVal_818 .cse0)))) (< 9 (let ((.cse1 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (select (select (store (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_818) |v_ULTIMATE.start_main_~p~0#1.base_71| v_ArrVal_817) |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_822) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_819) |v_ULTIMATE.start_main_~p~0#1.base_71| v_ArrVal_820) |c_ULTIMATE.start_main_~list~0#1.base|) .cse1)) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse0 v_ArrVal_814)) |v_ULTIMATE.start_main_~p~0#1.base_71| v_ArrVal_813) |c_ULTIMATE.start_main_~list~0#1.base|) .cse1))))))) is different from false [2024-11-27 20:17:13,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:13,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 66 [2024-11-27 20:17:13,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:13,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 333 treesize of output 260 [2024-11-27 20:17:13,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:13,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 184 [2024-11-27 20:17:13,874 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:13,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2132 treesize of output 2168 [2024-11-27 20:17:13,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:13,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1182 treesize of output 1030 [2024-11-27 20:17:14,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:14,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2664 treesize of output 2477 [2024-11-27 20:17:14,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 774 treesize of output 650 [2024-11-27 20:17:14,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 622 treesize of output 558 [2024-11-27 20:17:14,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 290 [2024-11-27 20:17:14,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 259 [2024-11-27 20:17:14,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:14,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 470 treesize of output 478 [2024-11-27 20:17:14,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:14,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 454 treesize of output 446 [2024-11-27 20:17:15,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-27 20:17:15,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-27 20:17:16,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-27 20:17:16,141 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:17:16,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 125 [2024-11-27 20:17:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2024-11-27 20:17:16,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238701691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:17:16,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:17:16,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 19 [2024-11-27 20:17:16,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293369100] [2024-11-27 20:17:16,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:16,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:17:16,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:17:16,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:17:16,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=225, Unknown=7, NotChecked=62, Total=342 [2024-11-27 20:17:16,491 INFO L87 Difference]: Start difference. First operand 249 states and 348 transitions. Second operand has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:17,317 INFO L93 Difference]: Finished difference Result 330 states and 456 transitions. [2024-11-27 20:17:17,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:17:17,318 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-27 20:17:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:17,321 INFO L225 Difference]: With dead ends: 330 [2024-11-27 20:17:17,321 INFO L226 Difference]: Without dead ends: 328 [2024-11-27 20:17:17,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=480, Unknown=7, NotChecked=94, Total=702 [2024-11-27 20:17:17,323 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 132 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:17,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 257 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 237 Invalid, 0 Unknown, 214 Unchecked, 0.5s Time] [2024-11-27 20:17:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-27 20:17:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 266. [2024-11-27 20:17:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.4) internal successors, (371), 265 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 371 transitions. [2024-11-27 20:17:17,359 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 371 transitions. Word has length 28 [2024-11-27 20:17:17,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:17,360 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 371 transitions. [2024-11-27 20:17:17,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 371 transitions. [2024-11-27 20:17:17,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 20:17:17,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:17,361 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:17:17,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:17:17,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:17:17,566 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:17,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1575527821, now seen corresponding path program 2 times [2024-11-27 20:17:17,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:17,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211822258] [2024-11-27 20:17:17,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:17:17,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:17,611 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:17:17,611 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:18,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:18,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211822258] [2024-11-27 20:17:18,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211822258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:18,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470027572] [2024-11-27 20:17:18,499 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:17:18,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:18,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:18,502 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:18,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:17:18,705 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:17:18,706 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:18,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-27 20:17:18,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:18,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 20:17:18,855 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-27 20:17:18,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-27 20:17:18,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:17:18,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-27 20:17:18,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 20:17:18,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-27 20:17:18,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-27 20:17:19,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:17:19,103 INFO L349 Elim1Store]: treesize reduction 44, result has 10.2 percent of original size [2024-11-27 20:17:19,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 81 [2024-11-27 20:17:19,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:17:19,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-11-27 20:17:19,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:17:19,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2024-11-27 20:17:19,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-27 20:17:19,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-27 20:17:19,159 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-27 20:17:19,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-11-27 20:17:19,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-27 20:17:19,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-27 20:17:19,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-27 20:17:19,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-11-27 20:17:19,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-27 20:17:19,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-27 20:17:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:19,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:19,701 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_949 (Array Int Int))) (< (let ((.cse0 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_949) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0))) 21)) is different from false [2024-11-27 20:17:19,728 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_949 (Array Int Int))) (< (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_949) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0))) 21)) is different from false [2024-11-27 20:17:19,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:19,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 47 [2024-11-27 20:17:19,785 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_22 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_81| Int) (v_ArrVal_941 (Array Int Int)) (v_ArrVal_944 (Array Int Int)) (v_ArrVal_943 (Array Int Int)) (v_ArrVal_946 (Array Int Int)) (v_ArrVal_945 (Array Int Int)) (v_ArrVal_949 (Array Int Int))) (or (not (= v_ArrVal_943 (let ((.cse0 (+ |c_ULTIMATE.start_main_~tail~0#1.offset| 4))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse0 (select v_ArrVal_943 .cse0))))) (< 20 (select v_arrayElimArr_22 0)) (< (let ((.cse1 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (select (select (store (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_943) |v_ULTIMATE.start_main_~p~0#1.base_81| v_arrayElimArr_22) |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_949) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_941) |v_ULTIMATE.start_main_~p~0#1.base_81| v_ArrVal_944) |c_ULTIMATE.start_main_~list~0#1.base|) .cse1)) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_946) |v_ULTIMATE.start_main_~p~0#1.base_81| v_ArrVal_945) |c_ULTIMATE.start_main_~list~0#1.base|) .cse1))) 21) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_81|) 0)))) is different from false [2024-11-27 20:17:19,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:19,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 61 [2024-11-27 20:17:19,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:19,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 313 treesize of output 240 [2024-11-27 20:17:20,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:20,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3008 treesize of output 3040 [2024-11-27 20:17:20,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:20,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1342 treesize of output 1032 [2024-11-27 20:17:20,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:20,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2664 treesize of output 2477 [2024-11-27 20:17:20,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 734 treesize of output 670 [2024-11-27 20:17:20,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 710 treesize of output 586 [2024-11-27 20:17:20,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 359 treesize of output 291 [2024-11-27 20:17:20,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 234 [2024-11-27 20:17:20,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:20,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 470 treesize of output 462 [2024-11-27 20:17:20,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:20,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 443 treesize of output 473 [2024-11-27 20:17:21,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-27 20:17:21,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-27 20:17:22,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-27 20:17:22,631 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:17:22,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 78 [2024-11-27 20:17:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2024-11-27 20:17:22,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470027572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:17:22,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:17:22,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2024-11-27 20:17:22,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022727872] [2024-11-27 20:17:22,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:22,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:17:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:17:22,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:17:22,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=228, Unknown=3, NotChecked=96, Total=380 [2024-11-27 20:17:22,982 INFO L87 Difference]: Start difference. First operand 266 states and 371 transitions. Second operand has 20 states, 20 states have (on average 3.8) internal successors, (76), 20 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:23,995 INFO L93 Difference]: Finished difference Result 507 states and 712 transitions. [2024-11-27 20:17:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:17:23,996 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.8) internal successors, (76), 20 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-27 20:17:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:23,999 INFO L225 Difference]: With dead ends: 507 [2024-11-27 20:17:24,000 INFO L226 Difference]: Without dead ends: 324 [2024-11-27 20:17:24,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=416, Unknown=3, NotChecked=132, Total=650 [2024-11-27 20:17:24,005 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 91 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:24,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 280 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 379 Invalid, 0 Unknown, 258 Unchecked, 0.7s Time] [2024-11-27 20:17:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-27 20:17:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 254. [2024-11-27 20:17:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4031620553359683) internal successors, (355), 253 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 355 transitions. [2024-11-27 20:17:24,046 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 355 transitions. Word has length 28 [2024-11-27 20:17:24,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:24,047 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 355 transitions. [2024-11-27 20:17:24,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.8) internal successors, (76), 20 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:17:24,047 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 355 transitions. [2024-11-27 20:17:24,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-27 20:17:24,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:24,048 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:17:24,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 20:17:24,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:17:24,248 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:24,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:24,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1290678582, now seen corresponding path program 3 times [2024-11-27 20:17:24,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:24,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474992725] [2024-11-27 20:17:24,249 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:17:24,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:24,295 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 20:17:24,295 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:25,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474992725] [2024-11-27 20:17:25,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474992725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923403304] [2024-11-27 20:17:25,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:17:25,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:25,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:25,160 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:25,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7185d00-0f7c-4f8a-a7df-6e8b8df8f43a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:17:25,415 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 20:17:25,415 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:25,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-27 20:17:25,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:25,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 20:17:25,506 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-27 20:17:25,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-27 20:17:25,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2024-11-27 20:17:25,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 11 [2024-11-27 20:17:25,704 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-27 20:17:25,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 32 [2024-11-27 20:17:25,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-27 20:17:25,882 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-27 20:17:25,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 35 [2024-11-27 20:17:25,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-27 20:17:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:25,934 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:26,064 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse1 (select .cse3 .cse2)) (.cse0 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base|))) (and (forall ((v_ArrVal_1044 (Array Int Int))) (or (not (= (store .cse0 |c_ULTIMATE.start_main_~p~0#1.offset| (select v_ArrVal_1044 |c_ULTIMATE.start_main_~p~0#1.offset|)) v_ArrVal_1044)) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_1044) .cse1) (+ (select v_ArrVal_1044 .cse2) 4)) 0))) (forall ((v_ArrVal_1045 Int)) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~p~0#1.offset| v_ArrVal_1045)) .cse1) (+ (select .cse0 .cse2) 4)) 0))))) is different from false [2024-11-27 20:17:26,158 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse0 (select .cse3 .cse1)) (.cse2 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|))) (and (forall ((v_ArrVal_1044 (Array Int Int))) (or (= 0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_1044) .cse0) (+ (select v_ArrVal_1044 .cse1) 4))) (not (= (store .cse2 |c_ULTIMATE.start_main_~list~0#1.offset| (select v_ArrVal_1044 |c_ULTIMATE.start_main_~list~0#1.offset|)) v_ArrVal_1044)))) (forall ((v_ArrVal_1045 Int)) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~list~0#1.offset| v_ArrVal_1045)) .cse0) (+ (select .cse2 .cse1) 4)) 0))))) is different from false [2024-11-27 20:17:26,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:26,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 140 [2024-11-27 20:17:26,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:26,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 648 treesize of output 678 [2024-11-27 20:17:26,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:26,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 544 treesize of output 434 [2024-11-27 20:17:26,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:17:26,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 958 treesize of output 1042 [2024-11-27 20:17:26,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-27 20:17:31,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:32,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:17:39,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-27 20:17:40,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-27 20:17:40,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-27 20:17:56,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-27 20:17:57,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-27 20:18:05,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:18:05,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5149 treesize of output 5133 [2024-11-27 20:18:25,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-27 20:18:26,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-27 20:28:31,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:28:31,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:28:31,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:28:31,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:28:31,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:28:31,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2024-11-27 20:28:31,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-27 20:28:34,674 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-27 20:28:34,684 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-27 20:29:02,689 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-27 20:29:03,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:29:03,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1745 treesize of output 1837 [2024-11-27 20:29:55,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:29:55,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 3626 treesize of output 4066