./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/in-de61.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/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_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/in-de61.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/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_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/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 49b7efdcf8f4d6c873493bd370328870547a88b20d287c5de5342268b0966917 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:40:10,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:40:10,331 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:40:10,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:40:10,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:40:10,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:40:10,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:40:10,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:40:10,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:40:10,389 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:40:10,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:40:10,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:40:10,390 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:40:10,390 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:40:10,390 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:40:10,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:40:10,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:40:10,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:40:10,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:40:10,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:40:10,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:40:10,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:40:10,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:40:10,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:40:10,393 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:40:10,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:40:10,393 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:40:10,393 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:40:10,393 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:40:10,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:40:10,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:40:10,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:40:10,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:10,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:40:10,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:40:10,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:40:10,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:40:10,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:10,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:40:10,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:40:10,395 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:40:10,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:40:10,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:40:10,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:40:10,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:40:10,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:40:10,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:40:10,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:40:10,397 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_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/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 -> 49b7efdcf8f4d6c873493bd370328870547a88b20d287c5de5342268b0966917 [2024-11-28 03:40:10,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:40:10,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:40:10,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:40:10,776 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:40:10,777 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:40:10,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loops-crafted-1/in-de61.c [2024-11-28 03:40:14,065 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/data/d877faa69/6d74a340b03e47dfbd6753bbb20500ff/FLAG42c797bd0 [2024-11-28 03:40:14,370 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:40:14,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/sv-benchmarks/c/loops-crafted-1/in-de61.c [2024-11-28 03:40:14,379 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/data/d877faa69/6d74a340b03e47dfbd6753bbb20500ff/FLAG42c797bd0 [2024-11-28 03:40:14,393 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/data/d877faa69/6d74a340b03e47dfbd6753bbb20500ff [2024-11-28 03:40:14,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:40:14,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:40:14,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:40:14,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:40:14,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:40:14,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6731c869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14, skipping insertion in model container [2024-11-28 03:40:14,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,421 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:40:14,572 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_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/sv-benchmarks/c/loops-crafted-1/in-de61.c[368,381] [2024-11-28 03:40:14,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:40:14,608 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:40:14,621 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_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/sv-benchmarks/c/loops-crafted-1/in-de61.c[368,381] [2024-11-28 03:40:14,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:40:14,643 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:40:14,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14 WrapperNode [2024-11-28 03:40:14,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:40:14,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:40:14,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:40:14,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:40:14,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,677 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2024-11-28 03:40:14,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:40:14,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:40:14,679 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:40:14,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:40:14,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,702 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:40:14,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,705 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:40:14,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:40:14,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:40:14,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:40:14,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:14,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:14,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:40:14,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:40:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:40:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:40:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:40:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:40:14,862 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:40:14,864 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:40:15,028 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-28 03:40:15,028 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:40:15,040 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:40:15,040 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 03:40:15,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:40:15 BoogieIcfgContainer [2024-11-28 03:40:15,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:40:15,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:40:15,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:40:15,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:40:15,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:40:14" (1/3) ... [2024-11-28 03:40:15,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5295530d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:40:15, skipping insertion in model container [2024-11-28 03:40:15,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14" (2/3) ... [2024-11-28 03:40:15,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5295530d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:40:15, skipping insertion in model container [2024-11-28 03:40:15,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:40:15" (3/3) ... [2024-11-28 03:40:15,056 INFO L128 eAbstractionObserver]: Analyzing ICFG in-de61.c [2024-11-28 03:40:15,073 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:40:15,075 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG in-de61.c that has 1 procedures, 23 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 03:40:15,150 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:40:15,166 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;@15cf989c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:40:15,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:40:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:15,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 03:40:15,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:15,179 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:15,180 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:15,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:15,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1786689805, now seen corresponding path program 1 times [2024-11-28 03:40:15,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:15,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006438940] [2024-11-28 03:40:15,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:15,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:15,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:15,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006438940] [2024-11-28 03:40:15,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006438940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:15,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:15,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:40:15,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435159581] [2024-11-28 03:40:15,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:15,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:40:15,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:15,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:40:15,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:40:15,398 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:15,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:15,411 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2024-11-28 03:40:15,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:40:15,412 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-28 03:40:15,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:15,418 INFO L225 Difference]: With dead ends: 42 [2024-11-28 03:40:15,418 INFO L226 Difference]: Without dead ends: 19 [2024-11-28 03:40:15,421 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 [2024-11-28 03:40:15,424 INFO L435 NwaCegarLoop]: 28 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, 28 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 [2024-11-28 03:40:15,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:40:15,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-28 03:40:15,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-28 03:40:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-11-28 03:40:15,465 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 12 [2024-11-28 03:40:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:15,465 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-11-28 03:40:15,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:15,467 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-11-28 03:40:15,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 03:40:15,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:15,468 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:15,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:40:15,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:15,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:15,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1782995721, now seen corresponding path program 1 times [2024-11-28 03:40:15,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:15,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903055963] [2024-11-28 03:40:15,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:15,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:16,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:16,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903055963] [2024-11-28 03:40:16,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903055963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:16,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:16,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:40:16,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277720861] [2024-11-28 03:40:16,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:16,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:40:16,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:16,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:40:16,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:40:16,306 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:16,495 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2024-11-28 03:40:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:40:16,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-28 03:40:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:16,496 INFO L225 Difference]: With dead ends: 43 [2024-11-28 03:40:16,496 INFO L226 Difference]: Without dead ends: 21 [2024-11-28 03:40:16,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:40:16,498 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:16,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:40:16,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-28 03:40:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-28 03:40:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-28 03:40:16,504 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2024-11-28 03:40:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:16,504 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-28 03:40:16,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:16,505 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-28 03:40:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 03:40:16,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:16,506 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:16,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:40:16,506 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:16,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:16,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1054805427, now seen corresponding path program 1 times [2024-11-28 03:40:16,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:16,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073423816] [2024-11-28 03:40:16,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:16,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:16,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:16,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073423816] [2024-11-28 03:40:16,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073423816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:16,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537490958] [2024-11-28 03:40:16,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:16,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:16,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:16,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:16,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:40:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:16,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:40:16,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:16,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:16,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537490958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:16,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:16,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-28 03:40:16,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864346506] [2024-11-28 03:40:16,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:16,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:40:16,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:16,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:40:16,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:40:16,869 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) [2024-11-28 03:40:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:17,309 INFO L93 Difference]: Finished difference Result 86 states and 123 transitions. [2024-11-28 03:40:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:40:17,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) Word has length 14 [2024-11-28 03:40:17,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:17,311 INFO L225 Difference]: With dead ends: 86 [2024-11-28 03:40:17,311 INFO L226 Difference]: Without dead ends: 74 [2024-11-28 03:40:17,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:40:17,313 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:17,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 87 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:40:17,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-28 03:40:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2024-11-28 03:40:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2024-11-28 03:40:17,330 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 14 [2024-11-28 03:40:17,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:17,330 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2024-11-28 03:40:17,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) [2024-11-28 03:40:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2024-11-28 03:40:17,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 03:40:17,332 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:17,332 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:17,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:17,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:17,533 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:17,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash -28504371, now seen corresponding path program 1 times [2024-11-28 03:40:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:17,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604482150] [2024-11-28 03:40:17,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:17,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:17,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604482150] [2024-11-28 03:40:17,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604482150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:17,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402618153] [2024-11-28 03:40:17,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:17,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:17,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:17,754 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:17,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:40:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:17,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:40:17,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:17,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:18,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402618153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:18,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:18,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-11-28 03:40:18,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902123053] [2024-11-28 03:40:18,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:18,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:40:18,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:18,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:40:18,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:40:18,043 INFO L87 Difference]: Start difference. First operand 56 states and 74 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:19,270 INFO L93 Difference]: Finished difference Result 166 states and 228 transitions. [2024-11-28 03:40:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 03:40:19,271 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2024-11-28 03:40:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:19,275 INFO L225 Difference]: With dead ends: 166 [2024-11-28 03:40:19,278 INFO L226 Difference]: Without dead ends: 134 [2024-11-28 03:40:19,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:40:19,281 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 160 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:19,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 81 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:40:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-28 03:40:19,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 78. [2024-11-28 03:40:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2987012987012987) internal successors, (100), 77 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2024-11-28 03:40:19,331 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 18 [2024-11-28 03:40:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:19,333 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2024-11-28 03:40:19,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2024-11-28 03:40:19,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:40:19,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:19,334 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:19,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:40:19,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:19,535 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:19,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:19,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1633865191, now seen corresponding path program 2 times [2024-11-28 03:40:19,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:19,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825266719] [2024-11-28 03:40:19,537 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:19,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:19,573 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:19,573 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:19,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:19,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825266719] [2024-11-28 03:40:19,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825266719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:19,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111630820] [2024-11-28 03:40:19,778 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:19,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:19,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:19,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:19,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:40:19,843 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:19,843 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:19,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:40:19,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:19,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:20,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111630820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:20,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:20,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 03:40:20,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512413593] [2024-11-28 03:40:20,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:20,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:40:20,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:20,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:40:20,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:40:20,085 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:21,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:21,111 INFO L93 Difference]: Finished difference Result 306 states and 423 transitions. [2024-11-28 03:40:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:40:21,111 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 [2024-11-28 03:40:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:21,113 INFO L225 Difference]: With dead ends: 306 [2024-11-28 03:40:21,113 INFO L226 Difference]: Without dead ends: 281 [2024-11-28 03:40:21,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:40:21,119 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 341 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:21,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 341 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:40:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-28 03:40:21,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 183. [2024-11-28 03:40:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.3296703296703296) internal successors, (242), 182 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 242 transitions. [2024-11-28 03:40:21,183 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 242 transitions. Word has length 20 [2024-11-28 03:40:21,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:21,183 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 242 transitions. [2024-11-28 03:40:21,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:21,183 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 242 transitions. [2024-11-28 03:40:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:40:21,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:21,184 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:21,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:40:21,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:21,385 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:21,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:21,386 INFO L85 PathProgramCache]: Analyzing trace with hash 593877961, now seen corresponding path program 1 times [2024-11-28 03:40:21,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:21,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279898116] [2024-11-28 03:40:21,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:40:21,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:21,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279898116] [2024-11-28 03:40:21,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279898116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:21,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586202366] [2024-11-28 03:40:21,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:21,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:21,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:21,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:21,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:40:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:21,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:40:21,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:40:21,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:40:21,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586202366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:21,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:21,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 13 [2024-11-28 03:40:21,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165082888] [2024-11-28 03:40:21,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:21,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:40:21,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:21,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:40:21,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:40:21,946 INFO L87 Difference]: Start difference. First operand 183 states and 242 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:22,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:22,267 INFO L93 Difference]: Finished difference Result 328 states and 425 transitions. [2024-11-28 03:40:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:40:22,268 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 03:40:22,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:22,270 INFO L225 Difference]: With dead ends: 328 [2024-11-28 03:40:22,270 INFO L226 Difference]: Without dead ends: 313 [2024-11-28 03:40:22,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:40:22,271 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 44 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:22,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 212 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:40:22,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-28 03:40:22,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 213. [2024-11-28 03:40:22,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.330188679245283) internal successors, (282), 212 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 282 transitions. [2024-11-28 03:40:22,330 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 282 transitions. Word has length 20 [2024-11-28 03:40:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:22,331 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 282 transitions. [2024-11-28 03:40:22,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 282 transitions. [2024-11-28 03:40:22,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:40:22,332 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:22,332 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:22,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:40:22,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:40:22,537 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:22,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:22,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1185053585, now seen corresponding path program 2 times [2024-11-28 03:40:22,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:22,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062583210] [2024-11-28 03:40:22,538 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:22,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:22,551 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:22,551 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:22,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:22,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062583210] [2024-11-28 03:40:22,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062583210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:22,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739066955] [2024-11-28 03:40:22,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:22,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:22,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:22,703 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:22,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:40:22,753 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:22,753 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:22,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:40:22,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:40:22,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:40:22,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739066955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:22,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:22,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2024-11-28 03:40:22,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960018898] [2024-11-28 03:40:22,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:22,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:40:22,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:22,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:40:22,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:40:22,990 INFO L87 Difference]: Start difference. First operand 213 states and 282 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) [2024-11-28 03:40:24,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:24,593 INFO L93 Difference]: Finished difference Result 543 states and 700 transitions. [2024-11-28 03:40:24,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 03:40:24,595 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 24 [2024-11-28 03:40:24,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:24,597 INFO L225 Difference]: With dead ends: 543 [2024-11-28 03:40:24,598 INFO L226 Difference]: Without dead ends: 476 [2024-11-28 03:40:24,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=361, Invalid=2189, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 03:40:24,601 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 226 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:24,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 129 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:40:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-28 03:40:24,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 250. [2024-11-28 03:40:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.3253012048192772) internal successors, (330), 249 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 330 transitions. [2024-11-28 03:40:24,676 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 330 transitions. Word has length 24 [2024-11-28 03:40:24,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:24,676 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 330 transitions. [2024-11-28 03:40:24,677 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) [2024-11-28 03:40:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 330 transitions. [2024-11-28 03:40:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:40:24,679 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:24,679 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:24,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:40:24,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:40:24,879 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:24,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:24,880 INFO L85 PathProgramCache]: Analyzing trace with hash -321078063, now seen corresponding path program 1 times [2024-11-28 03:40:24,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:24,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886834539] [2024-11-28 03:40:24,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:24,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:40:25,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:25,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886834539] [2024-11-28 03:40:25,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886834539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:25,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811303727] [2024-11-28 03:40:25,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:25,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:25,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:25,459 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:25,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:40:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:25,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:40:25,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:40:25,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:40:26,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811303727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:26,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:26,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-11-28 03:40:26,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943439125] [2024-11-28 03:40:26,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:26,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:40:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:26,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:40:26,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:40:26,121 INFO L87 Difference]: Start difference. First operand 250 states and 330 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:27,287 INFO L93 Difference]: Finished difference Result 336 states and 431 transitions. [2024-11-28 03:40:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:40:27,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 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 24 [2024-11-28 03:40:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:27,290 INFO L225 Difference]: With dead ends: 336 [2024-11-28 03:40:27,290 INFO L226 Difference]: Without dead ends: 326 [2024-11-28 03:40:27,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:40:27,292 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 79 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:27,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 64 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:40:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-28 03:40:27,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 248. [2024-11-28 03:40:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.3279352226720649) internal successors, (328), 247 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:27,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 328 transitions. [2024-11-28 03:40:27,387 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 328 transitions. Word has length 24 [2024-11-28 03:40:27,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:27,387 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 328 transitions. [2024-11-28 03:40:27,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:27,388 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 328 transitions. [2024-11-28 03:40:27,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 03:40:27,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:27,393 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:27,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:40:27,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 03:40:27,598 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:27,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash -690525611, now seen corresponding path program 1 times [2024-11-28 03:40:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:27,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047630815] [2024-11-28 03:40:27,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:27,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:40:27,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:27,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047630815] [2024-11-28 03:40:27,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047630815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:27,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121038004] [2024-11-28 03:40:27,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:27,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:27,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:27,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:27,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:40:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:27,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:40:27,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:40:27,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 03:40:27,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121038004] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:27,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:40:27,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 9] total 12 [2024-11-28 03:40:27,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17869149] [2024-11-28 03:40:27,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:27,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:40:27,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:27,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:40:27,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:40:27,941 INFO L87 Difference]: Start difference. First operand 248 states and 328 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:28,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:28,043 INFO L93 Difference]: Finished difference Result 347 states and 462 transitions. [2024-11-28 03:40:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:40:28,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 26 [2024-11-28 03:40:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:28,045 INFO L225 Difference]: With dead ends: 347 [2024-11-28 03:40:28,045 INFO L226 Difference]: Without dead ends: 254 [2024-11-28 03:40:28,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:40:28,046 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:28,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 31 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:40:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-28 03:40:28,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2024-11-28 03:40:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.3172690763052208) internal successors, (328), 249 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 328 transitions. [2024-11-28 03:40:28,128 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 328 transitions. Word has length 26 [2024-11-28 03:40:28,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:28,128 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 328 transitions. [2024-11-28 03:40:28,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:28,128 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 328 transitions. [2024-11-28 03:40:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 03:40:28,130 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:28,131 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:28,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:40:28,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:28,334 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:28,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:28,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1103403481, now seen corresponding path program 2 times [2024-11-28 03:40:28,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:28,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600303724] [2024-11-28 03:40:28,335 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:28,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:28,368 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:28,372 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:40:28,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:28,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600303724] [2024-11-28 03:40:28,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600303724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:28,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303838378] [2024-11-28 03:40:28,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:28,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:28,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:28,478 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:28,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:40:28,537 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:28,537 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:28,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:40:28,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:40:28,579 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:40:28,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303838378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:28,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:28,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-28 03:40:28,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299733564] [2024-11-28 03:40:28,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:28,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:40:28,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:28,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:40:28,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:40:28,645 INFO L87 Difference]: Start difference. First operand 250 states and 328 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:28,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:28,788 INFO L93 Difference]: Finished difference Result 411 states and 535 transitions. [2024-11-28 03:40:28,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:40:28,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2024-11-28 03:40:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:28,791 INFO L225 Difference]: With dead ends: 411 [2024-11-28 03:40:28,791 INFO L226 Difference]: Without dead ends: 301 [2024-11-28 03:40:28,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:40:28,793 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 19 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:28,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 62 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:40:28,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-28 03:40:28,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 233. [2024-11-28 03:40:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.3060344827586208) internal successors, (303), 232 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 303 transitions. [2024-11-28 03:40:28,867 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 303 transitions. Word has length 28 [2024-11-28 03:40:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:28,867 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 303 transitions. [2024-11-28 03:40:28,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 303 transitions. [2024-11-28 03:40:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 03:40:28,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:28,869 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:28,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:29,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:40:29,069 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:29,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1845960363, now seen corresponding path program 3 times [2024-11-28 03:40:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:29,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897054929] [2024-11-28 03:40:29,070 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:40:29,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:29,090 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:40:29,090 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 03:40:29,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897054929] [2024-11-28 03:40:29,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897054929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315019071] [2024-11-28 03:40:29,203 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:40:29,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:29,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:29,206 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:29,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:40:29,267 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:40:29,268 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:29,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:40:29,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:40:29,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:40:29,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315019071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:29,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:29,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-28 03:40:29,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302949018] [2024-11-28 03:40:29,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:29,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:40:29,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:29,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:40:29,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:40:29,528 INFO L87 Difference]: Start difference. First operand 233 states and 303 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:31,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:31,037 INFO L93 Difference]: Finished difference Result 799 states and 1027 transitions. [2024-11-28 03:40:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 03:40:31,038 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 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 30 [2024-11-28 03:40:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:31,041 INFO L225 Difference]: With dead ends: 799 [2024-11-28 03:40:31,041 INFO L226 Difference]: Without dead ends: 764 [2024-11-28 03:40:31,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=304, Invalid=1502, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 03:40:31,043 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 417 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:31,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 242 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:40:31,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2024-11-28 03:40:31,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 382. [2024-11-28 03:40:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.2860892388451444) internal successors, (490), 381 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 490 transitions. [2024-11-28 03:40:31,144 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 490 transitions. Word has length 30 [2024-11-28 03:40:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:31,145 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 490 transitions. [2024-11-28 03:40:31,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 490 transitions. [2024-11-28 03:40:31,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 03:40:31,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:31,146 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:31,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:31,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:31,351 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:31,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:31,351 INFO L85 PathProgramCache]: Analyzing trace with hash 295982769, now seen corresponding path program 3 times [2024-11-28 03:40:31,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:31,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104107831] [2024-11-28 03:40:31,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:40:31,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:31,398 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 03:40:31,398 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:31,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104107831] [2024-11-28 03:40:31,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104107831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277175141] [2024-11-28 03:40:31,637 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:40:31,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:31,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:31,641 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:31,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:40:31,695 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 03:40:31,695 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:31,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:40:31,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:31,762 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277175141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:32,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:32,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-11-28 03:40:32,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751191682] [2024-11-28 03:40:32,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:32,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 03:40:32,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:32,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 03:40:32,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:40:32,158 INFO L87 Difference]: Start difference. First operand 382 states and 490 transitions. Second operand has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:38,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:38,195 INFO L93 Difference]: Finished difference Result 1433 states and 1969 transitions. [2024-11-28 03:40:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-28 03:40:38,195 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 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 32 [2024-11-28 03:40:38,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:38,201 INFO L225 Difference]: With dead ends: 1433 [2024-11-28 03:40:38,201 INFO L226 Difference]: Without dead ends: 1311 [2024-11-28 03:40:38,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1467, Invalid=3363, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 03:40:38,204 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 1796 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:38,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 1046 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:40:38,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2024-11-28 03:40:38,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 616. [2024-11-28 03:40:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.3008130081300813) internal successors, (800), 615 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 800 transitions. [2024-11-28 03:40:38,379 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 800 transitions. Word has length 32 [2024-11-28 03:40:38,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:38,379 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 800 transitions. [2024-11-28 03:40:38,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 800 transitions. [2024-11-28 03:40:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 03:40:38,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:38,380 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:38,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:40:38,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:38,581 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:38,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:38,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1265865391, now seen corresponding path program 3 times [2024-11-28 03:40:38,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:38,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030393182] [2024-11-28 03:40:38,582 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:40:38,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:38,613 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:40:38,614 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:40:38,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:38,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030393182] [2024-11-28 03:40:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030393182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:38,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434042397] [2024-11-28 03:40:38,817 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:40:38,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:38,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:38,819 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:38,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:40:38,893 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:40:38,893 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:38,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:40:38,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:40:38,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 03:40:39,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434042397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:39,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:39,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 17 [2024-11-28 03:40:39,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113177690] [2024-11-28 03:40:39,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:39,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:40:39,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:39,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:40:39,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:40:39,040 INFO L87 Difference]: Start difference. First operand 616 states and 800 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:39,685 INFO L93 Difference]: Finished difference Result 839 states and 1067 transitions. [2024-11-28 03:40:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:40:39,686 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-28 03:40:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:39,689 INFO L225 Difference]: With dead ends: 839 [2024-11-28 03:40:39,689 INFO L226 Difference]: Without dead ends: 653 [2024-11-28 03:40:39,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:40:39,690 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 68 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:39,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 232 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:40:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-28 03:40:39,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 571. [2024-11-28 03:40:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.3070175438596492) internal successors, (745), 570 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:39,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 745 transitions. [2024-11-28 03:40:39,942 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 745 transitions. Word has length 32 [2024-11-28 03:40:39,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:39,943 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 745 transitions. [2024-11-28 03:40:39,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:39,944 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 745 transitions. [2024-11-28 03:40:39,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 03:40:39,945 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:39,945 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:39,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:40,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:40,147 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:40,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:40,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1600095121, now seen corresponding path program 4 times [2024-11-28 03:40:40,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:40,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378725798] [2024-11-28 03:40:40,147 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:40:40,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:40,161 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:40:40,161 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:40:40,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:40,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378725798] [2024-11-28 03:40:40,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378725798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:40,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506138944] [2024-11-28 03:40:40,250 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:40:40,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:40,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:40,253 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:40,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:40:40,301 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:40:40,301 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:40,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:40:40,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:40:40,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:40:40,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506138944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:40,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:40,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-28 03:40:40,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702288411] [2024-11-28 03:40:40,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:40,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:40:40,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:40,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:40:40,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:40:40,439 INFO L87 Difference]: Start difference. First operand 571 states and 745 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:40,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:40,953 INFO L93 Difference]: Finished difference Result 813 states and 1037 transitions. [2024-11-28 03:40:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:40:40,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 32 [2024-11-28 03:40:40,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:40,957 INFO L225 Difference]: With dead ends: 813 [2024-11-28 03:40:40,957 INFO L226 Difference]: Without dead ends: 798 [2024-11-28 03:40:40,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 11 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:40:40,958 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 43 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:40,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 100 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:40:40,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-28 03:40:41,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 620. [2024-11-28 03:40:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 1.2891760904684977) internal successors, (798), 619 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 798 transitions. [2024-11-28 03:40:41,190 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 798 transitions. Word has length 32 [2024-11-28 03:40:41,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:41,190 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 798 transitions. [2024-11-28 03:40:41,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:41,191 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 798 transitions. [2024-11-28 03:40:41,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 03:40:41,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:41,192 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:41,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:40:41,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:40:41,393 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:41,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:41,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1026032341, now seen corresponding path program 2 times [2024-11-28 03:40:41,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:41,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120810285] [2024-11-28 03:40:41,394 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:41,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:41,410 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:41,410 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:40:41,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:41,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120810285] [2024-11-28 03:40:41,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120810285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:41,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669076323] [2024-11-28 03:40:41,608 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:41,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:41,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:41,612 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:41,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:40:41,667 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:41,667 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:41,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 03:40:41,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:41,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 03:40:41,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669076323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:41,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:41,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 6] total 16 [2024-11-28 03:40:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933652890] [2024-11-28 03:40:41,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:41,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:40:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:41,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:40:41,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:40:41,857 INFO L87 Difference]: Start difference. First operand 620 states and 798 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:43,402 INFO L93 Difference]: Finished difference Result 1257 states and 1566 transitions. [2024-11-28 03:40:43,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:40:43,403 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 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 34 [2024-11-28 03:40:43,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:43,407 INFO L225 Difference]: With dead ends: 1257 [2024-11-28 03:40:43,407 INFO L226 Difference]: Without dead ends: 1136 [2024-11-28 03:40:43,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:40:43,410 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 242 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:43,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 261 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:40:43,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2024-11-28 03:40:43,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 653. [2024-11-28 03:40:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.2852760736196318) internal successors, (838), 652 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:43,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 838 transitions. [2024-11-28 03:40:43,639 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 838 transitions. Word has length 34 [2024-11-28 03:40:43,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:43,639 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 838 transitions. [2024-11-28 03:40:43,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:43,639 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 838 transitions. [2024-11-28 03:40:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 03:40:43,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:43,641 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:43,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:40:43,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:40:43,841 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:43,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1340964839, now seen corresponding path program 4 times [2024-11-28 03:40:43,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:43,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145680515] [2024-11-28 03:40:43,842 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:40:43,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:43,851 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:40:43,851 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:44,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:44,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145680515] [2024-11-28 03:40:44,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145680515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:44,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657549145] [2024-11-28 03:40:44,037 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:40:44,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:44,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:44,039 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:44,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:40:44,084 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:40:44,084 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:44,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:40:44,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 03:40:44,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 03:40:44,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657549145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:44,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:44,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 23 [2024-11-28 03:40:44,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608163951] [2024-11-28 03:40:44,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:44,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:40:44,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:44,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:40:44,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:40:44,374 INFO L87 Difference]: Start difference. First operand 653 states and 838 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:47,197 INFO L93 Difference]: Finished difference Result 2056 states and 2688 transitions. [2024-11-28 03:40:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 03:40:47,198 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 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 36 [2024-11-28 03:40:47,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:47,205 INFO L225 Difference]: With dead ends: 2056 [2024-11-28 03:40:47,206 INFO L226 Difference]: Without dead ends: 1924 [2024-11-28 03:40:47,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=689, Invalid=2733, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 03:40:47,208 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 553 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:47,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 660 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:40:47,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2024-11-28 03:40:47,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 872. [2024-11-28 03:40:47,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.2766934557979335) internal successors, (1112), 871 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1112 transitions. [2024-11-28 03:40:47,654 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1112 transitions. Word has length 36 [2024-11-28 03:40:47,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:47,655 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1112 transitions. [2024-11-28 03:40:47,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:47,655 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1112 transitions. [2024-11-28 03:40:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 03:40:47,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:47,657 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:47,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:47,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:40:47,857 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:47,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1265680025, now seen corresponding path program 5 times [2024-11-28 03:40:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:47,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436507345] [2024-11-28 03:40:47,858 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:40:47,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:47,909 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:40:47,909 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:49,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:49,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436507345] [2024-11-28 03:40:49,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436507345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:49,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278534512] [2024-11-28 03:40:49,155 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:40:49,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:49,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:49,157 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:49,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:40:49,251 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-28 03:40:49,252 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:49,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 03:40:49,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:41:09,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:41:10,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278534512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:10,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:10,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 13] total 32 [2024-11-28 03:41:10,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571327908] [2024-11-28 03:41:10,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:10,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:41:10,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:10,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:41:10,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=852, Unknown=2, NotChecked=0, Total=992 [2024-11-28 03:41:10,751 INFO L87 Difference]: Start difference. First operand 872 states and 1112 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 32 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:23,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:41:28,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:41:39,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:41:41,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:41:47,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:41:55,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:41:59,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:42:12,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:42:14,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:14,487 INFO L93 Difference]: Finished difference Result 1132 states and 1397 transitions. [2024-11-28 03:42:14,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 03:42:14,488 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 32 states have internal predecessors, (85), 0 states have call successors, (0), 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 36 [2024-11-28 03:42:14,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:14,490 INFO L225 Difference]: With dead ends: 1132 [2024-11-28 03:42:14,490 INFO L226 Difference]: Without dead ends: 986 [2024-11-28 03:42:14,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 58 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 51.7s TimeCoverageRelationStatistics Valid=433, Invalid=2755, Unknown=4, NotChecked=0, Total=3192 [2024-11-28 03:42:14,492 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 113 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 40 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:14,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 114 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 755 Invalid, 7 Unknown, 0 Unchecked, 32.8s Time] [2024-11-28 03:42:14,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-28 03:42:15,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 836. [2024-11-28 03:42:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.274251497005988) internal successors, (1064), 835 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1064 transitions. [2024-11-28 03:42:15,035 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1064 transitions. Word has length 36 [2024-11-28 03:42:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:15,035 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1064 transitions. [2024-11-28 03:42:15,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 32 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1064 transitions. [2024-11-28 03:42:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 03:42:15,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:15,037 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:15,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:42:15,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:42:15,242 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:15,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2026753455, now seen corresponding path program 6 times [2024-11-28 03:42:15,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:15,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089016442] [2024-11-28 03:42:15,242 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:42:15,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:15,278 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 03:42:15,278 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:42:15,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:15,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089016442] [2024-11-28 03:42:15,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089016442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:15,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522055290] [2024-11-28 03:42:15,423 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:42:15,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:15,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:15,425 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:15,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:42:15,541 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 03:42:15,541 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:15,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:42:15,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 03:42:15,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 03:42:15,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522055290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:15,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:15,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-11-28 03:42:15,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136509688] [2024-11-28 03:42:15,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:15,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:42:15,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:15,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:42:15,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:42:15,890 INFO L87 Difference]: Start difference. First operand 836 states and 1064 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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) [2024-11-28 03:42:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:17,687 INFO L93 Difference]: Finished difference Result 2152 states and 2749 transitions. [2024-11-28 03:42:17,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:42:17,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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) Word has length 40 [2024-11-28 03:42:17,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:17,692 INFO L225 Difference]: With dead ends: 2152 [2024-11-28 03:42:17,693 INFO L226 Difference]: Without dead ends: 1803 [2024-11-28 03:42:17,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:42:17,694 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 266 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:17,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 239 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:42:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2024-11-28 03:42:18,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1079. [2024-11-28 03:42:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.2578849721706864) internal successors, (1356), 1078 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1356 transitions. [2024-11-28 03:42:18,125 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1356 transitions. Word has length 40 [2024-11-28 03:42:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:18,126 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1356 transitions. [2024-11-28 03:42:18,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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) [2024-11-28 03:42:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1356 transitions. [2024-11-28 03:42:18,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 03:42:18,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:18,127 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:18,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:42:18,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:42:18,332 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:18,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:18,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1846967417, now seen corresponding path program 7 times [2024-11-28 03:42:18,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:18,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695043486] [2024-11-28 03:42:18,332 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:42:18,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:42:18,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:18,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695043486] [2024-11-28 03:42:18,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695043486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:18,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349970901] [2024-11-28 03:42:18,623 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:42:18,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:18,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:18,625 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:18,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:42:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:18,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 03:42:18,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:42:18,766 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:42:19,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349970901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:19,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:19,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-28 03:42:19,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839667577] [2024-11-28 03:42:19,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:19,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 03:42:19,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:19,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 03:42:19,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:42:19,425 INFO L87 Difference]: Start difference. First operand 1079 states and 1356 transitions. Second operand has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:35,663 INFO L93 Difference]: Finished difference Result 2838 states and 3746 transitions. [2024-11-28 03:42:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-28 03:42:35,664 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 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 44 [2024-11-28 03:42:35,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:35,672 INFO L225 Difference]: With dead ends: 2838 [2024-11-28 03:42:35,672 INFO L226 Difference]: Without dead ends: 2456 [2024-11-28 03:42:35,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7365 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=4922, Invalid=14260, Unknown=0, NotChecked=0, Total=19182 [2024-11-28 03:42:35,677 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 2262 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:35,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2262 Valid, 1309 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 03:42:35,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2024-11-28 03:42:36,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 1163. [2024-11-28 03:42:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 1.26592082616179) internal successors, (1471), 1162 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1471 transitions. [2024-11-28 03:42:36,134 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1471 transitions. Word has length 44 [2024-11-28 03:42:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:36,135 INFO L471 AbstractCegarLoop]: Abstraction has 1163 states and 1471 transitions. [2024-11-28 03:42:36,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 31 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:36,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1471 transitions. [2024-11-28 03:42:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 03:42:36,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:36,136 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:36,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 03:42:36,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:36,337 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:36,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:36,337 INFO L85 PathProgramCache]: Analyzing trace with hash -497613987, now seen corresponding path program 8 times [2024-11-28 03:42:36,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:36,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896786062] [2024-11-28 03:42:36,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:42:36,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:36,355 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:42:36,355 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:42:36,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:36,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896786062] [2024-11-28 03:42:36,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896786062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:36,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973803083] [2024-11-28 03:42:36,540 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:42:36,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:36,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:36,544 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:36,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:42:36,604 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:42:36,605 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:36,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:42:36,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 03:42:36,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 03:42:36,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973803083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:36,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:36,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 19 [2024-11-28 03:42:36,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566931272] [2024-11-28 03:42:36,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:36,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:42:36,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:36,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:42:36,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:42:36,914 INFO L87 Difference]: Start difference. First operand 1163 states and 1471 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:38,845 INFO L93 Difference]: Finished difference Result 1547 states and 1911 transitions. [2024-11-28 03:42:38,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 03:42:38,846 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 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 46 [2024-11-28 03:42:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:38,854 INFO L225 Difference]: With dead ends: 1547 [2024-11-28 03:42:38,855 INFO L226 Difference]: Without dead ends: 1303 [2024-11-28 03:42:38,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=275, Invalid=1795, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 03:42:38,856 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 149 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:38,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 416 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:42:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2024-11-28 03:42:39,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1130. [2024-11-28 03:42:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 1.2595217006200177) internal successors, (1422), 1129 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1422 transitions. [2024-11-28 03:42:39,499 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1422 transitions. Word has length 46 [2024-11-28 03:42:39,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:39,499 INFO L471 AbstractCegarLoop]: Abstraction has 1130 states and 1422 transitions. [2024-11-28 03:42:39,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1422 transitions. [2024-11-28 03:42:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 03:42:39,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:39,502 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:39,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:42:39,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:39,706 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:39,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:39,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1739976929, now seen corresponding path program 3 times [2024-11-28 03:42:39,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:39,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248255209] [2024-11-28 03:42:39,706 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:42:39,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:39,747 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 03:42:39,747 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 03:42:39,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:39,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248255209] [2024-11-28 03:42:39,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248255209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:39,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357601770] [2024-11-28 03:42:39,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:42:39,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:39,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:39,992 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:39,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:42:40,071 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 03:42:40,071 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:40,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:42:40,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 03:42:40,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 03:42:40,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357601770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:40,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:40,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2024-11-28 03:42:40,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448879985] [2024-11-28 03:42:40,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:40,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:42:40,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:40,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:42:40,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:42:40,340 INFO L87 Difference]: Start difference. First operand 1130 states and 1422 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 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) [2024-11-28 03:42:43,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:43,705 INFO L93 Difference]: Finished difference Result 2651 states and 3410 transitions. [2024-11-28 03:42:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 03:42:43,705 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 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 48 [2024-11-28 03:42:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:43,712 INFO L225 Difference]: With dead ends: 2651 [2024-11-28 03:42:43,712 INFO L226 Difference]: Without dead ends: 2588 [2024-11-28 03:42:43,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=306, Invalid=624, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:42:43,713 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 337 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:43,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 341 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:42:43,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2024-11-28 03:42:44,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1369. [2024-11-28 03:42:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1368 states have (on average 1.263157894736842) internal successors, (1728), 1368 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1728 transitions. [2024-11-28 03:42:44,474 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1728 transitions. Word has length 48 [2024-11-28 03:42:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:44,474 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1728 transitions. [2024-11-28 03:42:44,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 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) [2024-11-28 03:42:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1728 transitions. [2024-11-28 03:42:44,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 03:42:44,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:44,475 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:44,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 03:42:44,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 03:42:44,676 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:44,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:44,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1806065761, now seen corresponding path program 9 times [2024-11-28 03:42:44,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:44,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592909159] [2024-11-28 03:42:44,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:42:44,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:44,724 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:42:44,726 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 03:42:45,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:45,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592909159] [2024-11-28 03:42:45,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592909159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:45,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042299696] [2024-11-28 03:42:45,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:42:45,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:45,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:45,278 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:45,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:42:45,417 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:42:45,417 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:45,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 03:42:45,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:46,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:48,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042299696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:48,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:48,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 21] total 43 [2024-11-28 03:42:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581684836] [2024-11-28 03:42:48,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:48,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-28 03:42:48,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:48,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-28 03:42:48,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1613, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 03:42:48,035 INFO L87 Difference]: Start difference. First operand 1369 states and 1728 transitions. Second operand has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 43 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:06,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:06,985 INFO L93 Difference]: Finished difference Result 2067 states and 2475 transitions. [2024-11-28 03:43:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-28 03:43:06,986 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 43 states have internal predecessors, (118), 0 states have call successors, (0), 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 48 [2024-11-28 03:43:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:06,992 INFO L225 Difference]: With dead ends: 2067 [2024-11-28 03:43:06,992 INFO L226 Difference]: Without dead ends: 1985 [2024-11-28 03:43:06,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 65 SyntacticMatches, 9 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5223 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=2001, Invalid=15555, Unknown=0, NotChecked=0, Total=17556 [2024-11-28 03:43:06,998 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 417 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:06,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 407 Invalid, 2367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 03:43:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2024-11-28 03:43:07,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1358. [2024-11-28 03:43:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 1.2652910832719233) internal successors, (1717), 1357 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:07,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1717 transitions. [2024-11-28 03:43:07,830 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1717 transitions. Word has length 48 [2024-11-28 03:43:07,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:07,830 INFO L471 AbstractCegarLoop]: Abstraction has 1358 states and 1717 transitions. [2024-11-28 03:43:07,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 43 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1717 transitions. [2024-11-28 03:43:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 03:43:07,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:07,833 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:07,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 03:43:08,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 03:43:08,038 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:08,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1089585127, now seen corresponding path program 10 times [2024-11-28 03:43:08,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:08,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755788005] [2024-11-28 03:43:08,038 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:08,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:08,067 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:08,067 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:43:08,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:08,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755788005] [2024-11-28 03:43:08,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755788005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:08,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124980045] [2024-11-28 03:43:08,514 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:08,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:08,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:08,517 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:08,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:43:08,582 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:08,582 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:08,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:43:08,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 03:43:08,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 03:43:08,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124980045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:08,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:08,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 16 [2024-11-28 03:43:08,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969215426] [2024-11-28 03:43:08,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:08,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:43:08,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:08,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:43:08,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:43:08,892 INFO L87 Difference]: Start difference. First operand 1358 states and 1717 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 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) [2024-11-28 03:43:13,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:43:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:15,388 INFO L93 Difference]: Finished difference Result 2422 states and 2941 transitions. [2024-11-28 03:43:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:43:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 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) Word has length 52 [2024-11-28 03:43:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:15,394 INFO L225 Difference]: With dead ends: 2422 [2024-11-28 03:43:15,394 INFO L226 Difference]: Without dead ends: 2339 [2024-11-28 03:43:15,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:43:15,396 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 117 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:15,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 431 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 265 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 03:43:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2024-11-28 03:43:16,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 1538. [2024-11-28 03:43:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 1.2374756018217306) internal successors, (1902), 1537 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1902 transitions. [2024-11-28 03:43:16,475 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1902 transitions. Word has length 52 [2024-11-28 03:43:16,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:16,475 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 1902 transitions. [2024-11-28 03:43:16,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 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) [2024-11-28 03:43:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1902 transitions. [2024-11-28 03:43:16,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 03:43:16,478 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:16,478 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:16,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 03:43:16,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:43:16,679 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:16,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash -677757159, now seen corresponding path program 4 times [2024-11-28 03:43:16,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:16,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289115401] [2024-11-28 03:43:16,679 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:16,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:16,693 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:16,694 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:43:17,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289115401] [2024-11-28 03:43:17,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289115401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651699115] [2024-11-28 03:43:17,048 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:17,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:17,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:17,051 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:17,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:43:17,130 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:17,130 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:17,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 03:43:17,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:43:17,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:43:18,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651699115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:18,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:18,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 32 [2024-11-28 03:43:18,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949979308] [2024-11-28 03:43:18,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:18,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:43:18,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:18,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:43:18,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:43:18,006 INFO L87 Difference]: Start difference. First operand 1538 states and 1902 transitions. Second operand has 32 states, 32 states have (on average 2.34375) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:31,566 INFO L93 Difference]: Finished difference Result 3700 states and 4507 transitions. [2024-11-28 03:44:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 600 states. [2024-11-28 03:44:31,567 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.34375) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 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 56 [2024-11-28 03:44:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:31,573 INFO L225 Difference]: With dead ends: 3700 [2024-11-28 03:44:31,573 INFO L226 Difference]: Without dead ends: 2817 [2024-11-28 03:44:31,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 605 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175972 ImplicationChecksByTransitivity, 64.9s TimeCoverageRelationStatistics Valid=38647, Invalid=329195, Unknown=0, NotChecked=0, Total=367842 [2024-11-28 03:44:31,596 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 4056 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 3709 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 5380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 3709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:31,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 839 Invalid, 5380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 3709 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-28 03:44:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2024-11-28 03:44:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 1619. [2024-11-28 03:44:32,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1618 states have (on average 1.2410383189122374) internal successors, (2008), 1618 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2008 transitions. [2024-11-28 03:44:32,870 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2008 transitions. Word has length 56 [2024-11-28 03:44:32,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:32,870 INFO L471 AbstractCegarLoop]: Abstraction has 1619 states and 2008 transitions. [2024-11-28 03:44:32,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.34375) internal successors, (75), 32 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:32,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2008 transitions. [2024-11-28 03:44:32,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 03:44:32,872 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:32,873 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:32,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:33,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 03:44:33,073 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:33,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:33,074 INFO L85 PathProgramCache]: Analyzing trace with hash -773937079, now seen corresponding path program 5 times [2024-11-28 03:44:33,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:33,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721685608] [2024-11-28 03:44:33,074 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:33,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:33,105 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 03:44:33,105 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-28 03:44:33,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721685608] [2024-11-28 03:44:33,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721685608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563016664] [2024-11-28 03:44:33,474 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:33,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:33,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:33,478 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:33,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:44:33,991 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 03:44:33,991 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:33,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 03:44:33,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 72 proven. 120 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:44:34,530 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 72 proven. 120 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:44:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563016664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:35,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:35,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 25 [2024-11-28 03:44:35,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111018842] [2024-11-28 03:44:35,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:35,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 03:44:35,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:35,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 03:44:35,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:44:35,208 INFO L87 Difference]: Start difference. First operand 1619 states and 2008 transitions. Second operand has 25 states, 25 states have (on average 3.44) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:02,227 INFO L93 Difference]: Finished difference Result 4944 states and 6197 transitions. [2024-11-28 03:45:02,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2024-11-28 03:45:02,227 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.44) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 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 60 [2024-11-28 03:45:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:02,242 INFO L225 Difference]: With dead ends: 4944 [2024-11-28 03:45:02,242 INFO L226 Difference]: Without dead ends: 4372 [2024-11-28 03:45:02,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 126 SyntacticMatches, 16 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15940 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=3427, Invalid=37579, Unknown=0, NotChecked=0, Total=41006 [2024-11-28 03:45:02,247 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 2512 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 5033 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 5817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 5033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:02,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2512 Valid, 2238 Invalid, 5817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 5033 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-28 03:45:02,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4372 states. [2024-11-28 03:45:03,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4372 to 1923. [2024-11-28 03:45:03,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1922 states have (on average 1.218522372528616) internal successors, (2342), 1922 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2342 transitions. [2024-11-28 03:45:03,808 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2342 transitions. Word has length 60 [2024-11-28 03:45:03,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:03,809 INFO L471 AbstractCegarLoop]: Abstraction has 1923 states and 2342 transitions. [2024-11-28 03:45:03,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.44) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:03,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2342 transitions. [2024-11-28 03:45:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 03:45:03,811 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:03,811 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:03,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 03:45:04,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:45:04,012 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:04,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2065587671, now seen corresponding path program 11 times [2024-11-28 03:45:04,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:04,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606149606] [2024-11-28 03:45:04,012 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:45:04,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:04,055 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-28 03:45:04,055 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:07,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:07,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606149606] [2024-11-28 03:45:07,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606149606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:07,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014781136] [2024-11-28 03:45:07,380 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:45:07,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:07,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:07,382 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:07,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff5a56f-4c9b-4837-ba44-b2b880fdd9d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:45:07,491 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-28 03:45:07,491 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:07,493 WARN L254 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-28 03:45:07,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:11,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:16,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014781136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:16,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:16,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 31, 30] total 90 [2024-11-28 03:45:16,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391120951] [2024-11-28 03:45:16,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:16,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-28 03:45:16,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:16,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-28 03:45:16,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=7394, Unknown=0, NotChecked=0, Total=8010 [2024-11-28 03:45:16,552 INFO L87 Difference]: Start difference. First operand 1923 states and 2342 transitions. Second operand has 90 states, 90 states have (on average 1.9222222222222223) internal successors, (173), 90 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:21,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:45:27,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:45:31,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:45:56,178 WARN L286 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 82 DAG size of output: 40 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:46:02,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:46:06,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:46:10,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:46:15,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:46:19,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:46:23,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:46:27,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:47:00,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:47:04,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:47:08,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:47:12,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:47:16,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:47:19,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:47:23,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:47:27,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:47:31,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:47:35,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:12,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:16,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:20,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:24,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:28,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:32,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:36,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:40,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:44,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:48,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:52,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:48:56,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:49:00,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:49:04,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:49:33,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:49:37,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:49:41,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:49:45,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:49:49,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:49:53,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:49:57,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:50:01,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:50:05,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:50:09,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:50:13,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:50:17,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:50:21,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:50:46,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:50:50,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:50:54,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:50:58,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:50:59,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:51:04,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:51:08,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:51:12,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:51:16,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:51:21,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:51:25,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:51:29,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:51:33,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:51:37,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:51:41,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:05,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:09,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:13,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:17,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:21,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:26,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:30,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:34,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:38,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:42,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:46,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:52:50,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:53:22,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:53:26,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:53:30,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:53:34,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:53:38,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:53:42,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:53:46,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:53:50,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:53:54,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:53:58,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:54:22,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:54:26,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:54:30,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:54:34,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:54:38,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:54:55,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:54:59,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:55:04,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []