./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/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_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/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 64bit --witnessprinter.graph.data.programhash d40980d2c8614c94b54cd9b1a78f16d5c08e5a02579fe7ca6623a61adbb8dfb6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:49:30,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:49:30,189 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 19:49:30,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:49:30,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:49:30,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:49:30,229 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:49:30,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:49:30,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:49:30,230 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:49:30,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:49:30,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:49:30,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:49:30,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:49:30,232 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:49:30,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:49:30,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:49:30,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:49:30,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:49:30,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:49:30,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:49:30,234 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:49:30,234 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:49:30,234 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:49:30,234 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:49:30,234 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:49:30,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:30,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:30,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:30,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:30,235 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:49:30,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:30,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:30,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:30,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:30,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:49:30,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:49:30,236 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:49:30,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:49:30,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:49:30,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:49:30,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:49:30,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:49:30,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:49:30,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:49:30,237 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_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d40980d2c8614c94b54cd9b1a78f16d5c08e5a02579fe7ca6623a61adbb8dfb6 [2024-11-27 19:49:30,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:49:30,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:49:30,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:49:30,604 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:49:30,605 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:49:30,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c [2024-11-27 19:49:33,793 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/data/9f26b9c4c/194a59f7c10f4e2c85304d27ec3af1d7/FLAGe88023552 [2024-11-27 19:49:34,134 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:49:34,142 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c [2024-11-27 19:49:34,158 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/data/9f26b9c4c/194a59f7c10f4e2c85304d27ec3af1d7/FLAGe88023552 [2024-11-27 19:49:34,180 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/data/9f26b9c4c/194a59f7c10f4e2c85304d27ec3af1d7 [2024-11-27 19:49:34,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:49:34,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:49:34,187 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:34,187 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:49:34,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:49:34,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:34,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d944464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34, skipping insertion in model container [2024-11-27 19:49:34,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:34,244 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:49:34,448 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_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c[1174,1187] [2024-11-27 19:49:34,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:34,757 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:49:34,765 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_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.adding.1.prop1-back-serstep.c[1174,1187] [2024-11-27 19:49:34,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:34,987 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:49:34,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34 WrapperNode [2024-11-27 19:49:34,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:34,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:34,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:49:34,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:49:35,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,344 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1948 [2024-11-27 19:49:35,345 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:35,346 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:49:35,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:49:35,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:49:35,360 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,403 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,464 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 19:49:35,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,464 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,588 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:49:35,711 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:49:35,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:49:35,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:49:35,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (1/1) ... [2024-11-27 19:49:35,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:35,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:35,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:49:35,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:49:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:49:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:49:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:49:35,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:49:36,075 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:49:36,077 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:49:39,520 INFO L? ?]: Removed 993 outVars from TransFormulas that were not future-live. [2024-11-27 19:49:39,521 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:49:39,565 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:49:39,565 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 19:49:39,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:39 BoogieIcfgContainer [2024-11-27 19:49:39,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:49:39,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:49:39,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:49:39,580 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:49:39,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:49:34" (1/3) ... [2024-11-27 19:49:39,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9e7466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:39, skipping insertion in model container [2024-11-27 19:49:39,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:34" (2/3) ... [2024-11-27 19:49:39,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9e7466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:39, skipping insertion in model container [2024-11-27 19:49:39,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:39" (3/3) ... [2024-11-27 19:49:39,583 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.adding.1.prop1-back-serstep.c [2024-11-27 19:49:39,601 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:49:39,603 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.adding.1.prop1-back-serstep.c that has 1 procedures, 686 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 19:49:39,709 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:49:39,725 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;@5fc68481, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:49:39,726 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:49:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 686 states, 684 states have (on average 1.5014619883040936) internal successors, (1027), 685 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:39,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-27 19:49:39,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:39,751 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:39,752 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:39,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:39,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1356627832, now seen corresponding path program 1 times [2024-11-27 19:49:39,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:39,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612142699] [2024-11-27 19:49:39,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:39,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:41,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:41,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612142699] [2024-11-27 19:49:41,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612142699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:41,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:41,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:41,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214324968] [2024-11-27 19:49:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:41,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:41,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:41,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:41,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:41,216 INFO L87 Difference]: Start difference. First operand has 686 states, 684 states have (on average 1.5014619883040936) internal successors, (1027), 685 states have internal predecessors, (1027), 0 states have call successors, (0), 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 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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) [2024-11-27 19:49:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:41,391 INFO L93 Difference]: Finished difference Result 1325 states and 1987 transitions. [2024-11-27 19:49:41,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:41,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 85 [2024-11-27 19:49:41,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:41,421 INFO L225 Difference]: With dead ends: 1325 [2024-11-27 19:49:41,421 INFO L226 Difference]: Without dead ends: 685 [2024-11-27 19:49:41,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:41,433 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 0 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:41,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3057 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:41,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-27 19:49:41,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2024-11-27 19:49:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 1.4985380116959064) internal successors, (1025), 684 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1025 transitions. [2024-11-27 19:49:41,538 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1025 transitions. Word has length 85 [2024-11-27 19:49:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:41,539 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1025 transitions. [2024-11-27 19:49:41,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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) [2024-11-27 19:49:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1025 transitions. [2024-11-27 19:49:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-27 19:49:41,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:41,545 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:41,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:49:41,546 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:41,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash 895905841, now seen corresponding path program 1 times [2024-11-27 19:49:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:41,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430399872] [2024-11-27 19:49:41,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:41,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:42,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:42,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430399872] [2024-11-27 19:49:42,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430399872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:42,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:42,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:42,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566233207] [2024-11-27 19:49:42,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:42,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:42,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:42,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:42,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:42,018 INFO L87 Difference]: Start difference. First operand 685 states and 1025 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 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) [2024-11-27 19:49:42,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:42,100 INFO L93 Difference]: Finished difference Result 1326 states and 1985 transitions. [2024-11-27 19:49:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:42,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 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 86 [2024-11-27 19:49:42,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:42,106 INFO L225 Difference]: With dead ends: 1326 [2024-11-27 19:49:42,107 INFO L226 Difference]: Without dead ends: 687 [2024-11-27 19:49:42,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:42,110 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 0 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:42,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3053 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:42,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-27 19:49:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2024-11-27 19:49:42,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.4970845481049562) internal successors, (1027), 686 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:42,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1027 transitions. [2024-11-27 19:49:42,143 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1027 transitions. Word has length 86 [2024-11-27 19:49:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:42,144 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 1027 transitions. [2024-11-27 19:49:42,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 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) [2024-11-27 19:49:42,144 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1027 transitions. [2024-11-27 19:49:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 19:49:42,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:42,153 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:42,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:49:42,153 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:42,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:42,154 INFO L85 PathProgramCache]: Analyzing trace with hash 905311873, now seen corresponding path program 1 times [2024-11-27 19:49:42,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:42,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282540412] [2024-11-27 19:49:42,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:42,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:42,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:42,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282540412] [2024-11-27 19:49:42,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282540412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:42,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:42,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:49:42,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737058229] [2024-11-27 19:49:42,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:42,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:49:42,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:42,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:49:42,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:42,628 INFO L87 Difference]: Start difference. First operand 687 states and 1027 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:42,753 INFO L93 Difference]: Finished difference Result 1955 states and 2926 transitions. [2024-11-27 19:49:42,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:49:42,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2024-11-27 19:49:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:42,765 INFO L225 Difference]: With dead ends: 1955 [2024-11-27 19:49:42,765 INFO L226 Difference]: Without dead ends: 1314 [2024-11-27 19:49:42,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:49:42,768 INFO L435 NwaCegarLoop]: 1019 mSDtfsCounter, 928 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:42,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 4003 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:42,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2024-11-27 19:49:42,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 797. [2024-11-27 19:49:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.4962311557788945) internal successors, (1191), 796 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1191 transitions. [2024-11-27 19:49:42,802 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1191 transitions. Word has length 87 [2024-11-27 19:49:42,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:42,805 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1191 transitions. [2024-11-27 19:49:42,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:42,806 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1191 transitions. [2024-11-27 19:49:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-27 19:49:42,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:42,816 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:42,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:49:42,817 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:42,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:42,817 INFO L85 PathProgramCache]: Analyzing trace with hash 196228026, now seen corresponding path program 1 times [2024-11-27 19:49:42,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:42,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016846227] [2024-11-27 19:49:42,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:42,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-27 19:49:44,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:44,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016846227] [2024-11-27 19:49:44,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016846227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:44,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:44,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:49:44,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976931488] [2024-11-27 19:49:44,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:44,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:49:44,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:44,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:49:44,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:44,673 INFO L87 Difference]: Start difference. First operand 797 states and 1191 transitions. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:44,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:44,750 INFO L93 Difference]: Finished difference Result 1442 states and 2155 transitions. [2024-11-27 19:49:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:44,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 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 392 [2024-11-27 19:49:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:44,759 INFO L225 Difference]: With dead ends: 1442 [2024-11-27 19:49:44,760 INFO L226 Difference]: Without dead ends: 801 [2024-11-27 19:49:44,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:44,766 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 0 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:44,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3053 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2024-11-27 19:49:44,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 797. [2024-11-27 19:49:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.4962311557788945) internal successors, (1191), 796 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1191 transitions. [2024-11-27 19:49:44,848 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1191 transitions. Word has length 392 [2024-11-27 19:49:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:44,850 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1191 transitions. [2024-11-27 19:49:44,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:44,851 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1191 transitions. [2024-11-27 19:49:44,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2024-11-27 19:49:44,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:44,863 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:44,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:49:44,864 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:44,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:44,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1597978465, now seen corresponding path program 1 times [2024-11-27 19:49:44,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:44,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216013466] [2024-11-27 19:49:44,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:44,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:46,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216013466] [2024-11-27 19:49:46,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216013466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:46,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:46,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:46,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514218645] [2024-11-27 19:49:46,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:46,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:46,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:46,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:46,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:46,776 INFO L87 Difference]: Start difference. First operand 797 states and 1191 transitions. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:47,467 INFO L93 Difference]: Finished difference Result 1997 states and 2986 transitions. [2024-11-27 19:49:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:49:47,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 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 393 [2024-11-27 19:49:47,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:47,473 INFO L225 Difference]: With dead ends: 1997 [2024-11-27 19:49:47,473 INFO L226 Difference]: Without dead ends: 797 [2024-11-27 19:49:47,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:47,475 INFO L435 NwaCegarLoop]: 1136 mSDtfsCounter, 502 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:47,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 3039 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:49:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2024-11-27 19:49:47,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2024-11-27 19:49:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.4949748743718594) internal successors, (1190), 796 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:47,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1190 transitions. [2024-11-27 19:49:47,501 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1190 transitions. Word has length 393 [2024-11-27 19:49:47,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:47,503 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1190 transitions. [2024-11-27 19:49:47,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1190 transitions. [2024-11-27 19:49:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-27 19:49:47,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:47,510 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:47,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 19:49:47,511 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:47,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:47,512 INFO L85 PathProgramCache]: Analyzing trace with hash 24846299, now seen corresponding path program 1 times [2024-11-27 19:49:47,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:47,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435633842] [2024-11-27 19:49:47,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:47,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-27 19:49:49,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:49,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435633842] [2024-11-27 19:49:49,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435633842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:49,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:49,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:49,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592332312] [2024-11-27 19:49:49,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:49,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:49,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:49,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:49,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:49,021 INFO L87 Difference]: Start difference. First operand 797 states and 1190 transitions. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:49,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:49,082 INFO L93 Difference]: Finished difference Result 1446 states and 2159 transitions. [2024-11-27 19:49:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:49,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 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 394 [2024-11-27 19:49:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:49,090 INFO L225 Difference]: With dead ends: 1446 [2024-11-27 19:49:49,091 INFO L226 Difference]: Without dead ends: 801 [2024-11-27 19:49:49,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:49,094 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:49,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3050 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2024-11-27 19:49:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 799. [2024-11-27 19:49:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 1.493734335839599) internal successors, (1192), 798 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1192 transitions. [2024-11-27 19:49:49,120 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1192 transitions. Word has length 394 [2024-11-27 19:49:49,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:49,122 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 1192 transitions. [2024-11-27 19:49:49,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:49,123 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1192 transitions. [2024-11-27 19:49:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-27 19:49:49,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:49,130 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:49,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 19:49:49,130 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:49,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:49,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1884428983, now seen corresponding path program 1 times [2024-11-27 19:49:49,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:49,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845117349] [2024-11-27 19:49:49,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:49,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-27 19:49:50,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:50,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845117349] [2024-11-27 19:49:50,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845117349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:50,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:50,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:49:50,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483955459] [2024-11-27 19:49:50,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:50,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:49:50,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:50,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:49:50,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:50,449 INFO L87 Difference]: Start difference. First operand 799 states and 1192 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:50,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:50,533 INFO L93 Difference]: Finished difference Result 1454 states and 2169 transitions. [2024-11-27 19:49:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:50,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 395 [2024-11-27 19:49:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:50,538 INFO L225 Difference]: With dead ends: 1454 [2024-11-27 19:49:50,539 INFO L226 Difference]: Without dead ends: 803 [2024-11-27 19:49:50,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:50,541 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:50,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4064 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-27 19:49:50,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 801. [2024-11-27 19:49:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 1.4925) internal successors, (1194), 800 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1194 transitions. [2024-11-27 19:49:50,566 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1194 transitions. Word has length 395 [2024-11-27 19:49:50,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:50,566 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 1194 transitions. [2024-11-27 19:49:50,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1194 transitions. [2024-11-27 19:49:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-11-27 19:49:50,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:50,575 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:50,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 19:49:50,576 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:50,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:50,577 INFO L85 PathProgramCache]: Analyzing trace with hash -348725598, now seen corresponding path program 1 times [2024-11-27 19:49:50,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:50,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514932729] [2024-11-27 19:49:50,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:50,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-27 19:49:51,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:51,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514932729] [2024-11-27 19:49:51,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514932729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:51,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:51,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:49:51,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106901469] [2024-11-27 19:49:51,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:51,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:49:51,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:51,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:49:51,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:51,819 INFO L87 Difference]: Start difference. First operand 801 states and 1194 transitions. Second operand has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:51,898 INFO L93 Difference]: Finished difference Result 1462 states and 2179 transitions. [2024-11-27 19:49:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:51,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 0 states have call successors, (0), 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 396 [2024-11-27 19:49:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:51,904 INFO L225 Difference]: With dead ends: 1462 [2024-11-27 19:49:51,904 INFO L226 Difference]: Without dead ends: 805 [2024-11-27 19:49:51,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:51,906 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:51,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4064 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-27 19:49:51,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 803. [2024-11-27 19:49:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.4912718204488777) internal successors, (1196), 802 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1196 transitions. [2024-11-27 19:49:51,930 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1196 transitions. Word has length 396 [2024-11-27 19:49:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:51,931 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1196 transitions. [2024-11-27 19:49:51,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1196 transitions. [2024-11-27 19:49:51,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-27 19:49:51,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:51,939 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:51,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 19:49:51,939 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:51,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:51,940 INFO L85 PathProgramCache]: Analyzing trace with hash 766483312, now seen corresponding path program 1 times [2024-11-27 19:49:51,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:51,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628320656] [2024-11-27 19:49:51,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:51,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-27 19:49:53,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:53,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628320656] [2024-11-27 19:49:53,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628320656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:53,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:53,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:53,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784700997] [2024-11-27 19:49:53,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:53,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:53,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:53,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:53,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:53,080 INFO L87 Difference]: Start difference. First operand 803 states and 1196 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:53,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:53,140 INFO L93 Difference]: Finished difference Result 1478 states and 2201 transitions. [2024-11-27 19:49:53,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:53,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 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 397 [2024-11-27 19:49:53,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:53,145 INFO L225 Difference]: With dead ends: 1478 [2024-11-27 19:49:53,146 INFO L226 Difference]: Without dead ends: 815 [2024-11-27 19:49:53,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:53,147 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 4 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:53,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3050 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-27 19:49:53,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 809. [2024-11-27 19:49:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 1.49009900990099) internal successors, (1204), 808 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1204 transitions. [2024-11-27 19:49:53,169 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1204 transitions. Word has length 397 [2024-11-27 19:49:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:53,170 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 1204 transitions. [2024-11-27 19:49:53,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1204 transitions. [2024-11-27 19:49:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-27 19:49:53,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:53,179 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:53,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 19:49:53,179 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:53,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1907570352, now seen corresponding path program 1 times [2024-11-27 19:49:53,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:53,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624645646] [2024-11-27 19:49:53,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:53,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 19:49:54,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:54,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624645646] [2024-11-27 19:49:54,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624645646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:54,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:54,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:54,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821251807] [2024-11-27 19:49:54,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:54,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:54,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:54,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:54,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:54,095 INFO L87 Difference]: Start difference. First operand 809 states and 1204 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:54,156 INFO L93 Difference]: Finished difference Result 1498 states and 2229 transitions. [2024-11-27 19:49:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:54,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 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 398 [2024-11-27 19:49:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:54,162 INFO L225 Difference]: With dead ends: 1498 [2024-11-27 19:49:54,162 INFO L226 Difference]: Without dead ends: 821 [2024-11-27 19:49:54,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:54,164 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 4 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:54,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3050 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:54,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-27 19:49:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 815. [2024-11-27 19:49:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 814 states have (on average 1.488943488943489) internal successors, (1212), 814 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1212 transitions. [2024-11-27 19:49:54,189 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1212 transitions. Word has length 398 [2024-11-27 19:49:54,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:54,190 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1212 transitions. [2024-11-27 19:49:54,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1212 transitions. [2024-11-27 19:49:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-27 19:49:54,197 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:54,197 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:54,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 19:49:54,198 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:54,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:54,200 INFO L85 PathProgramCache]: Analyzing trace with hash 857671138, now seen corresponding path program 1 times [2024-11-27 19:49:54,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:54,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111795492] [2024-11-27 19:49:54,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:54,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 19:49:55,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:55,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111795492] [2024-11-27 19:49:55,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111795492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:55,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:55,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:55,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193502524] [2024-11-27 19:49:55,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:55,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:55,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:55,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:55,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:55,169 INFO L87 Difference]: Start difference. First operand 815 states and 1212 transitions. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:55,232 INFO L93 Difference]: Finished difference Result 1510 states and 2245 transitions. [2024-11-27 19:49:55,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:55,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 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 399 [2024-11-27 19:49:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:55,237 INFO L225 Difference]: With dead ends: 1510 [2024-11-27 19:49:55,237 INFO L226 Difference]: Without dead ends: 819 [2024-11-27 19:49:55,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:55,240 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:55,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3050 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-27 19:49:55,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 817. [2024-11-27 19:49:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 1.4877450980392157) internal successors, (1214), 816 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1214 transitions. [2024-11-27 19:49:55,262 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1214 transitions. Word has length 399 [2024-11-27 19:49:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:55,262 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1214 transitions. [2024-11-27 19:49:55,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1214 transitions. [2024-11-27 19:49:55,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-27 19:49:55,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:55,270 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:55,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 19:49:55,271 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:55,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:55,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2046815689, now seen corresponding path program 1 times [2024-11-27 19:49:55,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:55,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26014119] [2024-11-27 19:49:55,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:55,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:49:56,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:56,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26014119] [2024-11-27 19:49:56,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26014119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:56,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:56,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093173784] [2024-11-27 19:49:56,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:56,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:56,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:56,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:56,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:56,202 INFO L87 Difference]: Start difference. First operand 817 states and 1214 transitions. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:56,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:56,261 INFO L93 Difference]: Finished difference Result 1518 states and 2255 transitions. [2024-11-27 19:49:56,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:56,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 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 400 [2024-11-27 19:49:56,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:56,266 INFO L225 Difference]: With dead ends: 1518 [2024-11-27 19:49:56,267 INFO L226 Difference]: Without dead ends: 821 [2024-11-27 19:49:56,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:56,268 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:56,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3044 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:56,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-27 19:49:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 819. [2024-11-27 19:49:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 1.4865525672371638) internal successors, (1216), 818 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1216 transitions. [2024-11-27 19:49:56,292 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1216 transitions. Word has length 400 [2024-11-27 19:49:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:56,293 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1216 transitions. [2024-11-27 19:49:56,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1216 transitions. [2024-11-27 19:49:56,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-11-27 19:49:56,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:56,301 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:56,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 19:49:56,302 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:56,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash -827473445, now seen corresponding path program 1 times [2024-11-27 19:49:56,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:56,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877364784] [2024-11-27 19:49:56,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:56,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 19:49:57,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:57,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877364784] [2024-11-27 19:49:57,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877364784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:57,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:57,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:57,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789347311] [2024-11-27 19:49:57,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:57,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:57,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:57,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:57,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:57,250 INFO L87 Difference]: Start difference. First operand 819 states and 1216 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:57,344 INFO L93 Difference]: Finished difference Result 1532 states and 2273 transitions. [2024-11-27 19:49:57,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:57,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 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 401 [2024-11-27 19:49:57,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:57,350 INFO L225 Difference]: With dead ends: 1532 [2024-11-27 19:49:57,350 INFO L226 Difference]: Without dead ends: 833 [2024-11-27 19:49:57,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:57,352 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 3 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:57,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3050 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:57,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2024-11-27 19:49:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 823. [2024-11-27 19:49:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 1.4866180048661801) internal successors, (1222), 822 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1222 transitions. [2024-11-27 19:49:57,403 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1222 transitions. Word has length 401 [2024-11-27 19:49:57,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:57,404 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 1222 transitions. [2024-11-27 19:49:57,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1222 transitions. [2024-11-27 19:49:57,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-27 19:49:57,423 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:57,423 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:57,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 19:49:57,423 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:57,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1617450306, now seen corresponding path program 1 times [2024-11-27 19:49:57,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:57,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586808905] [2024-11-27 19:49:57,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:57,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-27 19:49:58,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:58,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586808905] [2024-11-27 19:49:58,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586808905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:58,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:58,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:58,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879078230] [2024-11-27 19:49:58,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:58,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:58,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:58,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:58,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:58,218 INFO L87 Difference]: Start difference. First operand 823 states and 1222 transitions. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:58,279 INFO L93 Difference]: Finished difference Result 1538 states and 2283 transitions. [2024-11-27 19:49:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:58,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 402 [2024-11-27 19:49:58,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:58,284 INFO L225 Difference]: With dead ends: 1538 [2024-11-27 19:49:58,284 INFO L226 Difference]: Without dead ends: 827 [2024-11-27 19:49:58,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:58,286 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:58,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3044 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-27 19:49:58,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 825. [2024-11-27 19:49:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 1.4854368932038835) internal successors, (1224), 824 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1224 transitions. [2024-11-27 19:49:58,310 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1224 transitions. Word has length 402 [2024-11-27 19:49:58,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:58,311 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 1224 transitions. [2024-11-27 19:49:58,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:49:58,312 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1224 transitions. [2024-11-27 19:49:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-27 19:49:58,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:58,345 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:58,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 19:49:58,346 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:58,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:58,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1694897964, now seen corresponding path program 1 times [2024-11-27 19:49:58,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:58,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485722726] [2024-11-27 19:49:58,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:58,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:59,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:59,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485722726] [2024-11-27 19:49:59,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485722726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:59,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239119761] [2024-11-27 19:49:59,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:59,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:59,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:59,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:59,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:50:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:00,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 19:50:00,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:00,635 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:00,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239119761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:00,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:00,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 19:50:00,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770550015] [2024-11-27 19:50:00,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:00,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:00,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:00,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:00,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:50:00,638 INFO L87 Difference]: Start difference. First operand 825 states and 1224 transitions. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:01,238 INFO L93 Difference]: Finished difference Result 2086 states and 3082 transitions. [2024-11-27 19:50:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:01,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2024-11-27 19:50:01,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:01,244 INFO L225 Difference]: With dead ends: 2086 [2024-11-27 19:50:01,245 INFO L226 Difference]: Without dead ends: 1350 [2024-11-27 19:50:01,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-27 19:50:01,247 INFO L435 NwaCegarLoop]: 1010 mSDtfsCounter, 1044 mSDsluCounter, 3737 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:01,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 4747 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:50:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2024-11-27 19:50:01,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 825. [2024-11-27 19:50:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 1.4842233009708738) internal successors, (1223), 824 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:01,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1223 transitions. [2024-11-27 19:50:01,274 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1223 transitions. Word has length 403 [2024-11-27 19:50:01,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:01,275 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 1223 transitions. [2024-11-27 19:50:01,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:01,275 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1223 transitions. [2024-11-27 19:50:01,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-27 19:50:01,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:01,284 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:01,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 19:50:01,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 19:50:01,484 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:01,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:01,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1935075672, now seen corresponding path program 1 times [2024-11-27 19:50:01,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:01,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493864159] [2024-11-27 19:50:01,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:01,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 34 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:02,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493864159] [2024-11-27 19:50:02,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493864159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708576775] [2024-11-27 19:50:02,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:02,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:02,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:02,492 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:02,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:50:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:03,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 19:50:03,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 19:50:03,634 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:03,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708576775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:03,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:03,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 19:50:03,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013519232] [2024-11-27 19:50:03,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:03,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:03,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:03,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:03,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:50:03,642 INFO L87 Difference]: Start difference. First operand 825 states and 1223 transitions. Second operand has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:04,769 INFO L93 Difference]: Finished difference Result 2049 states and 3036 transitions. [2024-11-27 19:50:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 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 404 [2024-11-27 19:50:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:04,776 INFO L225 Difference]: With dead ends: 2049 [2024-11-27 19:50:04,776 INFO L226 Difference]: Without dead ends: 1378 [2024-11-27 19:50:04,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:50:04,779 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 933 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:04,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 4219 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 19:50:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2024-11-27 19:50:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 827. [2024-11-27 19:50:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 826 states have (on average 1.4818401937046004) internal successors, (1224), 826 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1224 transitions. [2024-11-27 19:50:04,806 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1224 transitions. Word has length 404 [2024-11-27 19:50:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:04,807 INFO L471 AbstractCegarLoop]: Abstraction has 827 states and 1224 transitions. [2024-11-27 19:50:04,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1224 transitions. [2024-11-27 19:50:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-27 19:50:04,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:04,815 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:04,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 19:50:05,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 19:50:05,016 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:05,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1482703366, now seen corresponding path program 1 times [2024-11-27 19:50:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13962225] [2024-11-27 19:50:05,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:05,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13962225] [2024-11-27 19:50:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13962225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996888696] [2024-11-27 19:50:06,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:06,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:06,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:06,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:50:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:06,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 19:50:06,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 19:50:07,249 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:07,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996888696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:07,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:07,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 19:50:07,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157971496] [2024-11-27 19:50:07,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:07,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:07,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:07,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:07,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:50:07,252 INFO L87 Difference]: Start difference. First operand 827 states and 1224 transitions. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:08,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:08,001 INFO L93 Difference]: Finished difference Result 2077 states and 3076 transitions. [2024-11-27 19:50:08,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:08,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 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 405 [2024-11-27 19:50:08,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:08,008 INFO L225 Difference]: With dead ends: 2077 [2024-11-27 19:50:08,008 INFO L226 Difference]: Without dead ends: 1390 [2024-11-27 19:50:08,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:50:08,010 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 1809 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:08,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 3479 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:50:08,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2024-11-27 19:50:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 841. [2024-11-27 19:50:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 1.4761904761904763) internal successors, (1240), 840 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1240 transitions. [2024-11-27 19:50:08,038 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1240 transitions. Word has length 405 [2024-11-27 19:50:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:08,038 INFO L471 AbstractCegarLoop]: Abstraction has 841 states and 1240 transitions. [2024-11-27 19:50:08,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1240 transitions. [2024-11-27 19:50:08,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-27 19:50:08,042 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:08,042 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:08,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:08,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 19:50:08,247 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:08,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:08,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1994407883, now seen corresponding path program 1 times [2024-11-27 19:50:08,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:08,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770380401] [2024-11-27 19:50:08,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:08,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:09,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:09,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770380401] [2024-11-27 19:50:09,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770380401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:09,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551384470] [2024-11-27 19:50:09,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:09,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:09,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:09,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:09,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:50:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:10,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 19:50:10,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:10,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:10,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551384470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:10,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:10,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 19:50:10,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251898970] [2024-11-27 19:50:10,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:10,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:10,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:10,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:10,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:50:10,504 INFO L87 Difference]: Start difference. First operand 841 states and 1240 transitions. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:11,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:11,126 INFO L93 Difference]: Finished difference Result 2077 states and 3048 transitions. [2024-11-27 19:50:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:11,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 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 406 [2024-11-27 19:50:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:11,132 INFO L225 Difference]: With dead ends: 2077 [2024-11-27 19:50:11,132 INFO L226 Difference]: Without dead ends: 1406 [2024-11-27 19:50:11,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:50:11,134 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 1059 mSDsluCounter, 2794 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:11,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 3733 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:50:11,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2024-11-27 19:50:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1086. [2024-11-27 19:50:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 1.4626728110599079) internal successors, (1587), 1085 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1587 transitions. [2024-11-27 19:50:11,163 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1587 transitions. Word has length 406 [2024-11-27 19:50:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:11,164 INFO L471 AbstractCegarLoop]: Abstraction has 1086 states and 1587 transitions. [2024-11-27 19:50:11,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1587 transitions. [2024-11-27 19:50:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-27 19:50:11,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:11,168 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:11,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:11,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 19:50:11,369 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:11,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:11,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1663279086, now seen corresponding path program 1 times [2024-11-27 19:50:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:11,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399674602] [2024-11-27 19:50:11,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:11,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:12,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:12,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399674602] [2024-11-27 19:50:12,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399674602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:12,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072751200] [2024-11-27 19:50:12,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:12,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:12,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:12,251 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:12,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 19:50:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:12,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 19:50:12,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:14,121 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:14,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:14,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072751200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:14,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:14,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 19:50:14,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674555479] [2024-11-27 19:50:14,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:14,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:14,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:14,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:50:14,127 INFO L87 Difference]: Start difference. First operand 1086 states and 1587 transitions. Second operand has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:15,202 INFO L93 Difference]: Finished difference Result 2160 states and 3174 transitions. [2024-11-27 19:50:15,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:50:15,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2024-11-27 19:50:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:15,208 INFO L225 Difference]: With dead ends: 2160 [2024-11-27 19:50:15,208 INFO L226 Difference]: Without dead ends: 1324 [2024-11-27 19:50:15,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:50:15,211 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 1454 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:15,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 3071 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 19:50:15,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2024-11-27 19:50:15,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1322. [2024-11-27 19:50:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1321 states have (on average 1.469341408024224) internal successors, (1941), 1321 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1941 transitions. [2024-11-27 19:50:15,252 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1941 transitions. Word has length 407 [2024-11-27 19:50:15,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:15,256 INFO L471 AbstractCegarLoop]: Abstraction has 1322 states and 1941 transitions. [2024-11-27 19:50:15,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.83333333333333) internal successors, (407), 6 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:15,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1941 transitions. [2024-11-27 19:50:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-27 19:50:15,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:15,263 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:15,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:15,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:15,464 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:15,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:15,465 INFO L85 PathProgramCache]: Analyzing trace with hash -19151698, now seen corresponding path program 1 times [2024-11-27 19:50:15,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:15,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167666035] [2024-11-27 19:50:15,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:15,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:16,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:16,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167666035] [2024-11-27 19:50:16,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167666035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:16,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766117046] [2024-11-27 19:50:16,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:16,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:16,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:16,388 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:16,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 19:50:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:17,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 19:50:17,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 19:50:17,537 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:17,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766117046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:17,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:17,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 19:50:17,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542674502] [2024-11-27 19:50:17,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:17,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:17,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:17,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:17,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:50:17,542 INFO L87 Difference]: Start difference. First operand 1322 states and 1941 transitions. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:18,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:18,244 INFO L93 Difference]: Finished difference Result 3304 states and 4867 transitions. [2024-11-27 19:50:18,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:18,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 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 407 [2024-11-27 19:50:18,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:18,251 INFO L225 Difference]: With dead ends: 3304 [2024-11-27 19:50:18,252 INFO L226 Difference]: Without dead ends: 2176 [2024-11-27 19:50:18,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:50:18,254 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 1802 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:18,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 3481 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:50:18,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2024-11-27 19:50:18,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1322. [2024-11-27 19:50:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1321 states have (on average 1.4663133989401969) internal successors, (1937), 1321 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1937 transitions. [2024-11-27 19:50:18,291 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1937 transitions. Word has length 407 [2024-11-27 19:50:18,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:18,292 INFO L471 AbstractCegarLoop]: Abstraction has 1322 states and 1937 transitions. [2024-11-27 19:50:18,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1937 transitions. [2024-11-27 19:50:18,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-27 19:50:18,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:18,296 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:18,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:18,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:18,497 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:18,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2051459967, now seen corresponding path program 1 times [2024-11-27 19:50:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:18,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387303878] [2024-11-27 19:50:18,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:19,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:19,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387303878] [2024-11-27 19:50:19,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387303878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:19,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889422429] [2024-11-27 19:50:19,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:19,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:19,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:19,406 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:19,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 19:50:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:20,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 19:50:20,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:20,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:20,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889422429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:20,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:20,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 19:50:20,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982559378] [2024-11-27 19:50:20,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:20,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:20,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:20,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:20,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:50:20,791 INFO L87 Difference]: Start difference. First operand 1322 states and 1937 transitions. Second operand has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:21,557 INFO L93 Difference]: Finished difference Result 3375 states and 4946 transitions. [2024-11-27 19:50:21,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:21,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 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 408 [2024-11-27 19:50:21,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:21,562 INFO L225 Difference]: With dead ends: 3375 [2024-11-27 19:50:21,562 INFO L226 Difference]: Without dead ends: 2303 [2024-11-27 19:50:21,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:50:21,564 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 2058 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:21,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 3075 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:50:21,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2024-11-27 19:50:21,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 1826. [2024-11-27 19:50:21,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1825 states have (on average 1.4504109589041096) internal successors, (2647), 1825 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2647 transitions. [2024-11-27 19:50:21,607 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2647 transitions. Word has length 408 [2024-11-27 19:50:21,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:21,607 INFO L471 AbstractCegarLoop]: Abstraction has 1826 states and 2647 transitions. [2024-11-27 19:50:21,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2647 transitions. [2024-11-27 19:50:21,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-11-27 19:50:21,612 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:21,612 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:21,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:21,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 19:50:21,813 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:21,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:21,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1915333596, now seen corresponding path program 1 times [2024-11-27 19:50:21,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:21,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050152611] [2024-11-27 19:50:21,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:21,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:22,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:22,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050152611] [2024-11-27 19:50:22,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050152611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:22,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343353897] [2024-11-27 19:50:22,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:22,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:22,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:22,648 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:22,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 19:50:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:23,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 19:50:23,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:24,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:24,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343353897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:24,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:24,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 19:50:24,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201601021] [2024-11-27 19:50:24,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:24,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:24,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:24,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:24,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:50:24,267 INFO L87 Difference]: Start difference. First operand 1826 states and 2647 transitions. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:25,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:25,100 INFO L93 Difference]: Finished difference Result 3724 states and 5444 transitions. [2024-11-27 19:50:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:50:25,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2024-11-27 19:50:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:25,107 INFO L225 Difference]: With dead ends: 3724 [2024-11-27 19:50:25,107 INFO L226 Difference]: Without dead ends: 2300 [2024-11-27 19:50:25,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:50:25,110 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 1464 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:25,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 3072 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 19:50:25,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2024-11-27 19:50:25,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2298. [2024-11-27 19:50:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2297 states have (on average 1.4606007836308228) internal successors, (3355), 2297 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3355 transitions. [2024-11-27 19:50:25,147 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3355 transitions. Word has length 409 [2024-11-27 19:50:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:25,148 INFO L471 AbstractCegarLoop]: Abstraction has 2298 states and 3355 transitions. [2024-11-27 19:50:25,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3355 transitions. [2024-11-27 19:50:25,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-11-27 19:50:25,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:25,154 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:25,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 19:50:25,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-27 19:50:25,354 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:25,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:25,355 INFO L85 PathProgramCache]: Analyzing trace with hash -869800655, now seen corresponding path program 1 times [2024-11-27 19:50:25,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:25,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14951025] [2024-11-27 19:50:25,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:25,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:26,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:26,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14951025] [2024-11-27 19:50:26,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14951025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:26,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867465035] [2024-11-27 19:50:26,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:26,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:26,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:26,153 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:26,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 19:50:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:26,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-27 19:50:26,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:28,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:28,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867465035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:28,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:28,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2024-11-27 19:50:28,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275203120] [2024-11-27 19:50:28,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:28,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 19:50:28,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:28,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 19:50:28,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:50:28,563 INFO L87 Difference]: Start difference. First operand 2298 states and 3355 transitions. Second operand has 16 states, 16 states have (on average 25.5625) internal successors, (409), 16 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:31,078 INFO L93 Difference]: Finished difference Result 6849 states and 10063 transitions. [2024-11-27 19:50:31,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 19:50:31,079 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 25.5625) internal successors, (409), 16 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2024-11-27 19:50:31,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:31,091 INFO L225 Difference]: With dead ends: 6849 [2024-11-27 19:50:31,091 INFO L226 Difference]: Without dead ends: 4953 [2024-11-27 19:50:31,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-27 19:50:31,094 INFO L435 NwaCegarLoop]: 1689 mSDtfsCounter, 2397 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 4153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 14371 SdHoareTripleChecker+Invalid, 4159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:31,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2397 Valid, 14371 Invalid, 4159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4153 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 19:50:31,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2024-11-27 19:50:31,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 3511. [2024-11-27 19:50:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3511 states, 3510 states have (on average 1.4649572649572649) internal successors, (5142), 3510 states have internal predecessors, (5142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 5142 transitions. [2024-11-27 19:50:31,156 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 5142 transitions. Word has length 409 [2024-11-27 19:50:31,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:31,157 INFO L471 AbstractCegarLoop]: Abstraction has 3511 states and 5142 transitions. [2024-11-27 19:50:31,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 25.5625) internal successors, (409), 16 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:31,158 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 5142 transitions. [2024-11-27 19:50:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-27 19:50:31,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:31,165 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:31,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 19:50:31,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-27 19:50:31,372 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:31,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2045345238, now seen corresponding path program 1 times [2024-11-27 19:50:31,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:31,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200405363] [2024-11-27 19:50:31,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:32,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:32,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200405363] [2024-11-27 19:50:32,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200405363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:32,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515803741] [2024-11-27 19:50:32,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:32,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:32,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:32,436 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:32,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 19:50:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:33,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 19:50:33,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:34,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:50:34,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515803741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:34,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:50:34,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 19:50:34,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109982953] [2024-11-27 19:50:34,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:34,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 19:50:34,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:34,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 19:50:34,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 19:50:34,267 INFO L87 Difference]: Start difference. First operand 3511 states and 5142 transitions. Second operand has 8 states, 8 states have (on average 51.25) internal successors, (410), 8 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:35,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:35,581 INFO L93 Difference]: Finished difference Result 7999 states and 11756 transitions. [2024-11-27 19:50:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:50:35,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 51.25) internal successors, (410), 8 states have internal predecessors, (410), 0 states have call successors, (0), 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 410 [2024-11-27 19:50:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:35,591 INFO L225 Difference]: With dead ends: 7999 [2024-11-27 19:50:35,591 INFO L226 Difference]: Without dead ends: 4969 [2024-11-27 19:50:35,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:50:35,594 INFO L435 NwaCegarLoop]: 1252 mSDtfsCounter, 1428 mSDsluCounter, 5753 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 7005 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:35,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 7005 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 19:50:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4969 states. [2024-11-27 19:50:35,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4969 to 4551. [2024-11-27 19:50:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4551 states, 4550 states have (on average 1.4646153846153847) internal successors, (6664), 4550 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 6664 transitions. [2024-11-27 19:50:35,679 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 6664 transitions. Word has length 410 [2024-11-27 19:50:35,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:35,680 INFO L471 AbstractCegarLoop]: Abstraction has 4551 states and 6664 transitions. [2024-11-27 19:50:35,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 51.25) internal successors, (410), 8 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:35,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 6664 transitions. [2024-11-27 19:50:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-27 19:50:35,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:35,693 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:35,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 19:50:35,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 19:50:35,894 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:35,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1841786425, now seen corresponding path program 1 times [2024-11-27 19:50:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:35,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752171818] [2024-11-27 19:50:35,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:35,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:36,747 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:36,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:36,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752171818] [2024-11-27 19:50:36,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752171818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:36,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209156992] [2024-11-27 19:50:36,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:36,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:36,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:36,750 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:36,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 19:50:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:37,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-27 19:50:37,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 49 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:38,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 55 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:40,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209156992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:40,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:40,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 15] total 33 [2024-11-27 19:50:40,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123741926] [2024-11-27 19:50:40,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:40,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 19:50:40,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:40,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 19:50:40,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 19:50:40,033 INFO L87 Difference]: Start difference. First operand 4551 states and 6664 transitions. Second operand has 33 states, 33 states have (on average 29.151515151515152) internal successors, (962), 33 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:50,871 INFO L93 Difference]: Finished difference Result 38326 states and 56631 transitions. [2024-11-27 19:50:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2024-11-27 19:50:50,872 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 29.151515151515152) internal successors, (962), 33 states have internal predecessors, (962), 0 states have call successors, (0), 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 410 [2024-11-27 19:50:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:50,937 INFO L225 Difference]: With dead ends: 38326 [2024-11-27 19:50:50,937 INFO L226 Difference]: Without dead ends: 30274 [2024-11-27 19:50:50,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9553 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2277, Invalid=26453, Unknown=0, NotChecked=0, Total=28730 [2024-11-27 19:50:50,955 INFO L435 NwaCegarLoop]: 3169 mSDtfsCounter, 8767 mSDsluCounter, 63113 mSDsCounter, 0 mSdLazyCounter, 11967 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8767 SdHoareTripleChecker+Valid, 66282 SdHoareTripleChecker+Invalid, 12093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 11967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:50,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8767 Valid, 66282 Invalid, 12093 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [126 Valid, 11967 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-27 19:50:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30274 states. [2024-11-27 19:50:51,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30274 to 14262. [2024-11-27 19:50:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14262 states, 14261 states have (on average 1.4688310777645326) internal successors, (20947), 14261 states have internal predecessors, (20947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:51,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14262 states to 14262 states and 20947 transitions. [2024-11-27 19:50:51,231 INFO L78 Accepts]: Start accepts. Automaton has 14262 states and 20947 transitions. Word has length 410 [2024-11-27 19:50:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:51,231 INFO L471 AbstractCegarLoop]: Abstraction has 14262 states and 20947 transitions. [2024-11-27 19:50:51,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 29.151515151515152) internal successors, (962), 33 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 14262 states and 20947 transitions. [2024-11-27 19:50:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-27 19:50:51,251 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:51,251 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:51,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 19:50:51,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 19:50:51,452 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:51,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1594190310, now seen corresponding path program 1 times [2024-11-27 19:50:51,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:51,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012260765] [2024-11-27 19:50:51,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:51,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:52,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:52,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012260765] [2024-11-27 19:50:52,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012260765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:52,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474106814] [2024-11-27 19:50:52,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:52,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:52,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:52,166 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:52,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 19:50:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:52,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 19:50:52,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:53,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:54,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474106814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:54,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:54,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 11] total 27 [2024-11-27 19:50:54,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590486564] [2024-11-27 19:50:54,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:54,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 19:50:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:54,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 19:50:54,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-11-27 19:50:54,913 INFO L87 Difference]: Start difference. First operand 14262 states and 20947 transitions. Second operand has 27 states, 27 states have (on average 40.851851851851855) internal successors, (1103), 27 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:29,685 INFO L93 Difference]: Finished difference Result 374920 states and 555525 transitions. [2024-11-27 19:51:29,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 368 states. [2024-11-27 19:51:29,686 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 40.851851851851855) internal successors, (1103), 27 states have internal predecessors, (1103), 0 states have call successors, (0), 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 411 [2024-11-27 19:51:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:30,268 INFO L225 Difference]: With dead ends: 374920 [2024-11-27 19:51:30,268 INFO L226 Difference]: Without dead ends: 361124 [2024-11-27 19:51:30,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1213 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63942 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=13269, Invalid=137663, Unknown=0, NotChecked=0, Total=150932 [2024-11-27 19:51:30,330 INFO L435 NwaCegarLoop]: 4548 mSDtfsCounter, 44840 mSDsluCounter, 64836 mSDsCounter, 0 mSdLazyCounter, 23315 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44840 SdHoareTripleChecker+Valid, 69384 SdHoareTripleChecker+Invalid, 23455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 23315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:30,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44840 Valid, 69384 Invalid, 23455 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [140 Valid, 23315 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2024-11-27 19:51:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361124 states. [2024-11-27 19:51:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361124 to 28357. [2024-11-27 19:51:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28357 states, 28356 states have (on average 1.4607490478205671) internal successors, (41421), 28356 states have internal predecessors, (41421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:32,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28357 states to 28357 states and 41421 transitions. [2024-11-27 19:51:32,131 INFO L78 Accepts]: Start accepts. Automaton has 28357 states and 41421 transitions. Word has length 411 [2024-11-27 19:51:32,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:32,132 INFO L471 AbstractCegarLoop]: Abstraction has 28357 states and 41421 transitions. [2024-11-27 19:51:32,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 40.851851851851855) internal successors, (1103), 27 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:32,132 INFO L276 IsEmpty]: Start isEmpty. Operand 28357 states and 41421 transitions. [2024-11-27 19:51:32,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-27 19:51:32,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:32,182 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:32,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 19:51:32,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dc95d83-e7fd-4c3e-8453-21e645df5ea9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-27 19:51:32,385 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:32,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:32,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1756272768, now seen corresponding path program 1 times [2024-11-27 19:51:32,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:32,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573503608] [2024-11-27 19:51:32,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:32,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-27 19:51:33,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:33,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573503608] [2024-11-27 19:51:33,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573503608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:33,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:33,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:33,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432740082] [2024-11-27 19:51:33,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:33,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:33,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:33,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:33,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:33,234 INFO L87 Difference]: Start difference. First operand 28357 states and 41421 transitions. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:33,384 INFO L93 Difference]: Finished difference Result 53236 states and 78031 transitions. [2024-11-27 19:51:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:51:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 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 413 [2024-11-27 19:51:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:33,409 INFO L225 Difference]: With dead ends: 53236 [2024-11-27 19:51:33,409 INFO L226 Difference]: Without dead ends: 28537 [2024-11-27 19:51:33,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:33,425 INFO L435 NwaCegarLoop]: 1022 mSDtfsCounter, 0 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:33,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3047 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:51:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28537 states. [2024-11-27 19:51:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28537 to 28357. [2024-11-27 19:51:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28357 states, 28356 states have (on average 1.4607490478205671) internal successors, (41421), 28356 states have internal predecessors, (41421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28357 states to 28357 states and 41421 transitions. [2024-11-27 19:51:33,809 INFO L78 Accepts]: Start accepts. Automaton has 28357 states and 41421 transitions. Word has length 413 [2024-11-27 19:51:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:33,810 INFO L471 AbstractCegarLoop]: Abstraction has 28357 states and 41421 transitions. [2024-11-27 19:51:33,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:33,810 INFO L276 IsEmpty]: Start isEmpty. Operand 28357 states and 41421 transitions. [2024-11-27 19:51:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-27 19:51:33,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:33,855 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:33,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 19:51:33,855 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:33,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:33,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1629980409, now seen corresponding path program 1 times [2024-11-27 19:51:33,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:33,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080484454] [2024-11-27 19:51:33,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:33,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 19:51:34,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:34,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080484454] [2024-11-27 19:51:34,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080484454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:34,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:34,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:51:34,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271171183] [2024-11-27 19:51:34,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:34,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:51:34,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:34,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:51:34,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:34,809 INFO L87 Difference]: Start difference. First operand 28357 states and 41421 transitions. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:35,028 INFO L93 Difference]: Finished difference Result 53236 states and 78031 transitions. [2024-11-27 19:51:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:51:35,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 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 414 [2024-11-27 19:51:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:35,061 INFO L225 Difference]: With dead ends: 53236 [2024-11-27 19:51:35,061 INFO L226 Difference]: Without dead ends: 28537 [2024-11-27 19:51:35,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:51:35,082 INFO L435 NwaCegarLoop]: 1022 mSDtfsCounter, 0 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4055 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:35,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4055 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:51:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28537 states. [2024-11-27 19:51:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28537 to 28357. [2024-11-27 19:51:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28357 states, 28356 states have (on average 1.4607490478205671) internal successors, (41421), 28356 states have internal predecessors, (41421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28357 states to 28357 states and 41421 transitions. [2024-11-27 19:51:35,370 INFO L78 Accepts]: Start accepts. Automaton has 28357 states and 41421 transitions. Word has length 414 [2024-11-27 19:51:35,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:35,370 INFO L471 AbstractCegarLoop]: Abstraction has 28357 states and 41421 transitions. [2024-11-27 19:51:35,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 28357 states and 41421 transitions. [2024-11-27 19:51:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-27 19:51:35,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:35,401 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:35,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 19:51:35,401 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:35,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1535864832, now seen corresponding path program 1 times [2024-11-27 19:51:35,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:35,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176538454] [2024-11-27 19:51:35,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:35,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:36,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:36,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176538454] [2024-11-27 19:51:36,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176538454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:36,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:36,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:51:36,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042370190] [2024-11-27 19:51:36,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:36,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:51:36,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:36,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:51:36,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:36,443 INFO L87 Difference]: Start difference. First operand 28357 states and 41421 transitions. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:37,203 INFO L93 Difference]: Finished difference Result 78847 states and 115446 transitions. [2024-11-27 19:51:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:51:37,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 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 415 [2024-11-27 19:51:37,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:37,238 INFO L225 Difference]: With dead ends: 78847 [2024-11-27 19:51:37,238 INFO L226 Difference]: Without dead ends: 54140 [2024-11-27 19:51:37,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:37,259 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 2024 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:37,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 2769 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:51:37,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54140 states. [2024-11-27 19:51:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54140 to 40746. [2024-11-27 19:51:37,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40746 states, 40745 states have (on average 1.4478340900724016) internal successors, (58992), 40745 states have internal predecessors, (58992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:37,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40746 states to 40746 states and 58992 transitions. [2024-11-27 19:51:37,615 INFO L78 Accepts]: Start accepts. Automaton has 40746 states and 58992 transitions. Word has length 415 [2024-11-27 19:51:37,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:37,615 INFO L471 AbstractCegarLoop]: Abstraction has 40746 states and 58992 transitions. [2024-11-27 19:51:37,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:37,616 INFO L276 IsEmpty]: Start isEmpty. Operand 40746 states and 58992 transitions. [2024-11-27 19:51:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2024-11-27 19:51:37,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:37,655 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:37,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 19:51:37,655 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:37,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:37,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2017565812, now seen corresponding path program 1 times [2024-11-27 19:51:37,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:37,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422589552] [2024-11-27 19:51:37,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:37,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:38,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422589552] [2024-11-27 19:51:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422589552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:38,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:38,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:51:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833529879] [2024-11-27 19:51:38,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:38,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:51:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:38,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:51:38,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:38,594 INFO L87 Difference]: Start difference. First operand 40746 states and 58992 transitions. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:39,686 INFO L93 Difference]: Finished difference Result 111714 states and 162121 transitions. [2024-11-27 19:51:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:51:39,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 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 416 [2024-11-27 19:51:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:39,730 INFO L225 Difference]: With dead ends: 111714 [2024-11-27 19:51:39,730 INFO L226 Difference]: Without dead ends: 77591 [2024-11-27 19:51:39,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:39,750 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 2284 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:39,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2284 Valid, 3075 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:51:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77591 states. [2024-11-27 19:51:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77591 to 69648. [2024-11-27 19:51:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69648 states, 69647 states have (on average 1.440320473243643) internal successors, (100314), 69647 states have internal predecessors, (100314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:40,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69648 states to 69648 states and 100314 transitions. [2024-11-27 19:51:40,718 INFO L78 Accepts]: Start accepts. Automaton has 69648 states and 100314 transitions. Word has length 416 [2024-11-27 19:51:40,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:40,718 INFO L471 AbstractCegarLoop]: Abstraction has 69648 states and 100314 transitions. [2024-11-27 19:51:40,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 69648 states and 100314 transitions. [2024-11-27 19:51:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-27 19:51:40,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:40,958 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:40,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 19:51:40,958 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:40,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:40,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1923306452, now seen corresponding path program 1 times [2024-11-27 19:51:40,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:40,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736762623] [2024-11-27 19:51:40,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:40,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:42,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:42,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736762623] [2024-11-27 19:51:42,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736762623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:42,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:42,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:51:42,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936199249] [2024-11-27 19:51:42,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:42,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:51:42,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:42,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:51:42,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:42,380 INFO L87 Difference]: Start difference. First operand 69648 states and 100314 transitions. Second operand has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:43,540 INFO L93 Difference]: Finished difference Result 189223 states and 273188 transitions. [2024-11-27 19:51:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:51:43,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 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 417 [2024-11-27 19:51:43,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:43,614 INFO L225 Difference]: With dead ends: 189223 [2024-11-27 19:51:43,615 INFO L226 Difference]: Without dead ends: 132608 [2024-11-27 19:51:43,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:43,647 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 2348 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:43,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 3076 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 19:51:43,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132608 states. [2024-11-27 19:51:45,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132608 to 125532. [2024-11-27 19:51:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125532 states, 125531 states have (on average 1.4345301160669477) internal successors, (180078), 125531 states have internal predecessors, (180078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125532 states to 125532 states and 180078 transitions. [2024-11-27 19:51:45,339 INFO L78 Accepts]: Start accepts. Automaton has 125532 states and 180078 transitions. Word has length 417 [2024-11-27 19:51:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:45,339 INFO L471 AbstractCegarLoop]: Abstraction has 125532 states and 180078 transitions. [2024-11-27 19:51:45,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 125532 states and 180078 transitions. [2024-11-27 19:51:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-27 19:51:45,896 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:45,897 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:45,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 19:51:45,897 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:45,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:45,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1094443024, now seen corresponding path program 1 times [2024-11-27 19:51:45,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:45,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016317830] [2024-11-27 19:51:45,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:45,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:47,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016317830] [2024-11-27 19:51:47,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016317830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:47,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:47,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:51:47,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648205103] [2024-11-27 19:51:47,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:47,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:51:47,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:47,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:51:47,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:47,340 INFO L87 Difference]: Start difference. First operand 125532 states and 180078 transitions. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:48,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:48,876 INFO L93 Difference]: Finished difference Result 338957 states and 487398 transitions. [2024-11-27 19:51:48,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:51:48,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 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 418 [2024-11-27 19:51:48,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:49,090 INFO L225 Difference]: With dead ends: 338957 [2024-11-27 19:51:49,090 INFO L226 Difference]: Without dead ends: 238628 [2024-11-27 19:51:49,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:49,151 INFO L435 NwaCegarLoop]: 1106 mSDtfsCounter, 1665 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:49,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 3624 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:51:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238628 states. [2024-11-27 19:51:51,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238628 to 232500. [2024-11-27 19:51:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232500 states, 232499 states have (on average 1.4297093750940864) internal successors, (332406), 232499 states have internal predecessors, (332406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232500 states to 232500 states and 332406 transitions. [2024-11-27 19:51:52,177 INFO L78 Accepts]: Start accepts. Automaton has 232500 states and 332406 transitions. Word has length 418 [2024-11-27 19:51:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:52,177 INFO L471 AbstractCegarLoop]: Abstraction has 232500 states and 332406 transitions. [2024-11-27 19:51:52,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:52,177 INFO L276 IsEmpty]: Start isEmpty. Operand 232500 states and 332406 transitions. [2024-11-27 19:51:52,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-11-27 19:51:52,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:52,994 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:52,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 19:51:52,995 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:52,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:52,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1062351603, now seen corresponding path program 1 times [2024-11-27 19:51:52,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:52,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596727494] [2024-11-27 19:51:52,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:52,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:54,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:54,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596727494] [2024-11-27 19:51:54,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596727494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:54,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:54,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:51:54,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264983388] [2024-11-27 19:51:54,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:54,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:51:54,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:54,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:51:54,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:54,185 INFO L87 Difference]: Start difference. First operand 232500 states and 332406 transitions. Second operand has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:56,886 INFO L93 Difference]: Finished difference Result 476816 states and 689453 transitions. [2024-11-27 19:51:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:51:56,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 0 states have call successors, (0), 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 419 [2024-11-27 19:51:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:57,088 INFO L225 Difference]: With dead ends: 476816 [2024-11-27 19:51:57,088 INFO L226 Difference]: Without dead ends: 293234 [2024-11-27 19:51:57,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:57,135 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 1390 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:57,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 3078 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:51:57,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293234 states. [2024-11-27 19:51:59,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293234 to 293184. [2024-11-27 19:52:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293184 states, 293183 states have (on average 1.4432146475068472) internal successors, (423126), 293183 states have internal predecessors, (423126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293184 states to 293184 states and 423126 transitions. [2024-11-27 19:52:01,436 INFO L78 Accepts]: Start accepts. Automaton has 293184 states and 423126 transitions. Word has length 419 [2024-11-27 19:52:01,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:01,436 INFO L471 AbstractCegarLoop]: Abstraction has 293184 states and 423126 transitions. [2024-11-27 19:52:01,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 293184 states and 423126 transitions. [2024-11-27 19:52:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-11-27 19:52:01,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:01,925 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:01,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-27 19:52:01,925 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:01,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash 176013487, now seen corresponding path program 1 times [2024-11-27 19:52:01,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:01,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163039889] [2024-11-27 19:52:01,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:01,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:52:03,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:03,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163039889] [2024-11-27 19:52:03,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163039889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:03,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:52:03,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:52:03,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987709721] [2024-11-27 19:52:03,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:03,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:52:03,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:03,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:52:03,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:52:03,619 INFO L87 Difference]: Start difference. First operand 293184 states and 423126 transitions. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:06,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:06,143 INFO L93 Difference]: Finished difference Result 536865 states and 779234 transitions. [2024-11-27 19:52:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:52:06,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 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 419 [2024-11-27 19:52:06,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:06,386 INFO L225 Difference]: With dead ends: 536865 [2024-11-27 19:52:06,386 INFO L226 Difference]: Without dead ends: 292094 [2024-11-27 19:52:06,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:52:06,482 INFO L435 NwaCegarLoop]: 778 mSDtfsCounter, 887 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:06,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1548 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 19:52:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292094 states.