./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/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_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 49ff6ba228d081d26cec6b087caf15954318cb178107abc089cabcbe5599946d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:08:00,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:08:00,388 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:08:00,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:08:00,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:08:00,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:08:00,437 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:08:00,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:08:00,438 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:08:00,438 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:08:00,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:08:00,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:08:00,440 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:08:00,441 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:08:00,441 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:08:00,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:08:00,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:08:00,442 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:08:00,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:08:00,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:08:00,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:08:00,442 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:08:00,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:08:00,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:08:00,443 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:08:00,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:08:00,443 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:08:00,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:08:00,443 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:08:00,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:08:00,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:08:00,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:08:00,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:08:00,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:08:00,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:08:00,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:08:00,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:08:00,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:08:00,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:08:00,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:08:00,446 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:08:00,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:08:00,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:08:00,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:08:00,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:08:00,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:08:00,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:08:00,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:08:00,448 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_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49ff6ba228d081d26cec6b087caf15954318cb178107abc089cabcbe5599946d [2024-11-27 20:08:00,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:08:00,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:08:00,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:08:00,800 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:08:00,800 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:08:00,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem13_label54.c [2024-11-27 20:08:03,759 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/data/bf30a4f46/25c68d078d7745b480de01d06fe3a66a/FLAGf2d66fd58 [2024-11-27 20:08:04,554 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:08:04,554 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/sv-benchmarks/c/eca-rers2012/Problem13_label54.c [2024-11-27 20:08:04,596 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/data/bf30a4f46/25c68d078d7745b480de01d06fe3a66a/FLAGf2d66fd58 [2024-11-27 20:08:04,624 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/data/bf30a4f46/25c68d078d7745b480de01d06fe3a66a [2024-11-27 20:08:04,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:08:04,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:08:04,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:08:04,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:08:04,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:08:04,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:08:04" (1/1) ... [2024-11-27 20:08:04,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca8832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:04, skipping insertion in model container [2024-11-27 20:08:04,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:08:04" (1/1) ... [2024-11-27 20:08:04,750 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:08:05,069 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_e9670f08-c39d-4c98-ac89-d9c399eb9765/sv-benchmarks/c/eca-rers2012/Problem13_label54.c[4044,4057] [2024-11-27 20:08:06,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:08:06,352 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:08:06,385 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_e9670f08-c39d-4c98-ac89-d9c399eb9765/sv-benchmarks/c/eca-rers2012/Problem13_label54.c[4044,4057] [2024-11-27 20:08:07,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:08:07,093 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:08:07,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07 WrapperNode [2024-11-27 20:08:07,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:08:07,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:08:07,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:08:07,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:08:07,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:07,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:07,841 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-27 20:08:07,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:08:07,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:08:07,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:08:07,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:08:07,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:07,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:08,020 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:08,232 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:08:08,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:08,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:08,492 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:08,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:08,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:08,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:08,642 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:08,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:08:08,704 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:08:08,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:08:08,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:08:08,706 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (1/1) ... [2024-11-27 20:08:08,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:08:08,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:08:08,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:08:08,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:08:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:08:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:08:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:08:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:08:08,877 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:08:08,878 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:08:18,032 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-27 20:08:18,033 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:08:18,093 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:08:18,094 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:08:18,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:08:18 BoogieIcfgContainer [2024-11-27 20:08:18,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:08:18,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:08:18,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:08:18,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:08:18,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:08:04" (1/3) ... [2024-11-27 20:08:18,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eceb00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:08:18, skipping insertion in model container [2024-11-27 20:08:18,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:07" (2/3) ... [2024-11-27 20:08:18,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eceb00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:08:18, skipping insertion in model container [2024-11-27 20:08:18,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:08:18" (3/3) ... [2024-11-27 20:08:18,116 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label54.c [2024-11-27 20:08:18,134 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:08:18,136 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label54.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:08:18,276 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:08:18,292 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;@74dcfde3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:08:18,292 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:08:18,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:18,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-27 20:08:18,309 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:18,309 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] [2024-11-27 20:08:18,310 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:18,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:18,316 INFO L85 PathProgramCache]: Analyzing trace with hash -438767135, now seen corresponding path program 1 times [2024-11-27 20:08:18,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:18,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913477888] [2024-11-27 20:08:18,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:18,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:18,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:18,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913477888] [2024-11-27 20:08:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913477888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:18,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:08:18,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048848480] [2024-11-27 20:08:18,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:18,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:18,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:18,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:18,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:18,794 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:24,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:08:24,918 INFO L93 Difference]: Finished difference Result 3147 states and 5806 transitions. [2024-11-27 20:08:24,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:08:24,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-11-27 20:08:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:08:24,961 INFO L225 Difference]: With dead ends: 3147 [2024-11-27 20:08:24,964 INFO L226 Difference]: Without dead ends: 1964 [2024-11-27 20:08:24,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:24,985 INFO L435 NwaCegarLoop]: 764 mSDtfsCounter, 1152 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:08:24,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 992 Invalid, 3298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [584 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-27 20:08:25,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2024-11-27 20:08:25,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1951. [2024-11-27 20:08:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1950 states have (on average 1.6538461538461537) internal successors, (3225), 1950 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3225 transitions. [2024-11-27 20:08:25,197 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3225 transitions. Word has length 27 [2024-11-27 20:08:25,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:08:25,200 INFO L471 AbstractCegarLoop]: Abstraction has 1951 states and 3225 transitions. [2024-11-27 20:08:25,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3225 transitions. [2024-11-27 20:08:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-27 20:08:25,205 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:25,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:25,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:08:25,207 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:25,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:25,208 INFO L85 PathProgramCache]: Analyzing trace with hash 575451273, now seen corresponding path program 1 times [2024-11-27 20:08:25,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:25,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240917063] [2024-11-27 20:08:25,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:25,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:25,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:25,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240917063] [2024-11-27 20:08:25,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240917063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:25,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:25,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:08:25,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732047971] [2024-11-27 20:08:25,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:25,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:25,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:25,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:25,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:25,661 INFO L87 Difference]: Start difference. First operand 1951 states and 3225 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:32,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:08:32,054 INFO L93 Difference]: Finished difference Result 5542 states and 9222 transitions. [2024-11-27 20:08:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:08:32,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2024-11-27 20:08:32,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:08:32,072 INFO L225 Difference]: With dead ends: 5542 [2024-11-27 20:08:32,072 INFO L226 Difference]: Without dead ends: 3593 [2024-11-27 20:08:32,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:32,076 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 924 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:08:32,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1009 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-27 20:08:32,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2024-11-27 20:08:32,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3581. [2024-11-27 20:08:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 1.5050279329608938) internal successors, (5388), 3580 states have internal predecessors, (5388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 5388 transitions. [2024-11-27 20:08:32,196 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 5388 transitions. Word has length 98 [2024-11-27 20:08:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:08:32,197 INFO L471 AbstractCegarLoop]: Abstraction has 3581 states and 5388 transitions. [2024-11-27 20:08:32,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 5388 transitions. [2024-11-27 20:08:32,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 20:08:32,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:32,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:32,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:08:32,204 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:32,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash 228222636, now seen corresponding path program 1 times [2024-11-27 20:08:32,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:32,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090052999] [2024-11-27 20:08:32,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090052999] [2024-11-27 20:08:32,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090052999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:32,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:32,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:08:32,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388935097] [2024-11-27 20:08:32,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:32,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:32,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:32,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:32,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:32,561 INFO L87 Difference]: Start difference. First operand 3581 states and 5388 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:37,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:08:37,022 INFO L93 Difference]: Finished difference Result 10352 states and 15625 transitions. [2024-11-27 20:08:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:08:37,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-11-27 20:08:37,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:08:37,053 INFO L225 Difference]: With dead ends: 10352 [2024-11-27 20:08:37,054 INFO L226 Difference]: Without dead ends: 6773 [2024-11-27 20:08:37,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:37,062 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 785 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:08:37,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1172 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-27 20:08:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2024-11-27 20:08:37,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6749. [2024-11-27 20:08:37,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6749 states, 6748 states have (on average 1.3252815649081209) internal successors, (8943), 6748 states have internal predecessors, (8943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:37,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 8943 transitions. [2024-11-27 20:08:37,232 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 8943 transitions. Word has length 112 [2024-11-27 20:08:37,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:08:37,232 INFO L471 AbstractCegarLoop]: Abstraction has 6749 states and 8943 transitions. [2024-11-27 20:08:37,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:37,233 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 8943 transitions. [2024-11-27 20:08:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 20:08:37,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:37,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:37,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:08:37,239 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:37,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:37,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1558843312, now seen corresponding path program 1 times [2024-11-27 20:08:37,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225231194] [2024-11-27 20:08:37,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:37,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:37,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225231194] [2024-11-27 20:08:37,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225231194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:37,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:37,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:08:37,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897278692] [2024-11-27 20:08:37,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:37,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:37,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:37,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:37,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:37,661 INFO L87 Difference]: Start difference. First operand 6749 states and 8943 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:08:42,003 INFO L93 Difference]: Finished difference Result 19804 states and 26220 transitions. [2024-11-27 20:08:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:08:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2024-11-27 20:08:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:08:42,052 INFO L225 Difference]: With dead ends: 19804 [2024-11-27 20:08:42,052 INFO L226 Difference]: Without dead ends: 13057 [2024-11-27 20:08:42,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:42,064 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 865 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:08:42,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1035 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-27 20:08:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13057 states. [2024-11-27 20:08:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13057 to 13052. [2024-11-27 20:08:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13052 states, 13051 states have (on average 1.217914336066202) internal successors, (15895), 13051 states have internal predecessors, (15895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13052 states to 13052 states and 15895 transitions. [2024-11-27 20:08:42,344 INFO L78 Accepts]: Start accepts. Automaton has 13052 states and 15895 transitions. Word has length 141 [2024-11-27 20:08:42,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:08:42,345 INFO L471 AbstractCegarLoop]: Abstraction has 13052 states and 15895 transitions. [2024-11-27 20:08:42,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 13052 states and 15895 transitions. [2024-11-27 20:08:42,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-27 20:08:42,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:42,356 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 20:08:42,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:08:42,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:42,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:42,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1789674140, now seen corresponding path program 1 times [2024-11-27 20:08:42,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:42,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506111138] [2024-11-27 20:08:42,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:42,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 20:08:43,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:43,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506111138] [2024-11-27 20:08:43,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506111138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:43,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:43,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:08:43,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151000587] [2024-11-27 20:08:43,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:43,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:43,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:43,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:43,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:43,120 INFO L87 Difference]: Start difference. First operand 13052 states and 15895 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:46,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:08:46,731 INFO L93 Difference]: Finished difference Result 26889 states and 32590 transitions. [2024-11-27 20:08:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:08:46,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2024-11-27 20:08:46,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:08:46,771 INFO L225 Difference]: With dead ends: 26889 [2024-11-27 20:08:46,771 INFO L226 Difference]: Without dead ends: 13839 [2024-11-27 20:08:46,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:46,783 INFO L435 NwaCegarLoop]: 1084 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:08:46,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1213 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 20:08:46,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13839 states. [2024-11-27 20:08:46,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13839 to 13839. [2024-11-27 20:08:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13839 states, 13838 states have (on average 1.2058823529411764) internal successors, (16687), 13838 states have internal predecessors, (16687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13839 states to 13839 states and 16687 transitions. [2024-11-27 20:08:47,022 INFO L78 Accepts]: Start accepts. Automaton has 13839 states and 16687 transitions. Word has length 219 [2024-11-27 20:08:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:08:47,022 INFO L471 AbstractCegarLoop]: Abstraction has 13839 states and 16687 transitions. [2024-11-27 20:08:47,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 13839 states and 16687 transitions. [2024-11-27 20:08:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-27 20:08:47,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:47,030 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 20:08:47,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:08:47,031 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:47,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1420967643, now seen corresponding path program 1 times [2024-11-27 20:08:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:47,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697372239] [2024-11-27 20:08:47,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:47,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:47,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:47,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697372239] [2024-11-27 20:08:47,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697372239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:47,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:47,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:08:47,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450437800] [2024-11-27 20:08:47,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:47,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:47,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:47,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:47,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:47,428 INFO L87 Difference]: Start difference. First operand 13839 states and 16687 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:52,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:08:52,152 INFO L93 Difference]: Finished difference Result 33200 states and 41058 transitions. [2024-11-27 20:08:52,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:08:52,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2024-11-27 20:08:52,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:08:52,195 INFO L225 Difference]: With dead ends: 33200 [2024-11-27 20:08:52,195 INFO L226 Difference]: Without dead ends: 20150 [2024-11-27 20:08:52,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:52,205 INFO L435 NwaCegarLoop]: 823 mSDtfsCounter, 861 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:08:52,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 943 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-27 20:08:52,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20150 states. [2024-11-27 20:08:52,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20150 to 20140. [2024-11-27 20:08:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20140 states, 20139 states have (on average 1.1898803316947217) internal successors, (23963), 20139 states have internal predecessors, (23963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:52,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20140 states to 20140 states and 23963 transitions. [2024-11-27 20:08:52,461 INFO L78 Accepts]: Start accepts. Automaton has 20140 states and 23963 transitions. Word has length 226 [2024-11-27 20:08:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:08:52,462 INFO L471 AbstractCegarLoop]: Abstraction has 20140 states and 23963 transitions. [2024-11-27 20:08:52,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 20140 states and 23963 transitions. [2024-11-27 20:08:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-27 20:08:52,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:52,466 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 20:08:52,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:08:52,466 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:52,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:52,467 INFO L85 PathProgramCache]: Analyzing trace with hash -206220480, now seen corresponding path program 1 times [2024-11-27 20:08:52,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:52,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676129705] [2024-11-27 20:08:52,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:52,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:08:52,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:52,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676129705] [2024-11-27 20:08:52,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676129705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:52,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:52,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:08:52,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976686338] [2024-11-27 20:08:52,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:52,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:52,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:52,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:52,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:52,697 INFO L87 Difference]: Start difference. First operand 20140 states and 23963 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:56,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:08:56,779 INFO L93 Difference]: Finished difference Result 39361 states and 46953 transitions. [2024-11-27 20:08:56,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:08:56,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2024-11-27 20:08:56,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:08:56,825 INFO L225 Difference]: With dead ends: 39361 [2024-11-27 20:08:56,825 INFO L226 Difference]: Without dead ends: 20010 [2024-11-27 20:08:56,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:56,841 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 1037 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:08:56,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1642 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-27 20:08:56,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20010 states. [2024-11-27 20:08:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20010 to 19220. [2024-11-27 20:08:57,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19220 states, 19219 states have (on average 1.1321608824600655) internal successors, (21759), 19219 states have internal predecessors, (21759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19220 states to 19220 states and 21759 transitions. [2024-11-27 20:08:57,088 INFO L78 Accepts]: Start accepts. Automaton has 19220 states and 21759 transitions. Word has length 241 [2024-11-27 20:08:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:08:57,089 INFO L471 AbstractCegarLoop]: Abstraction has 19220 states and 21759 transitions. [2024-11-27 20:08:57,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:08:57,090 INFO L276 IsEmpty]: Start isEmpty. Operand 19220 states and 21759 transitions. [2024-11-27 20:08:57,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-27 20:08:57,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:57,099 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:57,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:08:57,100 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:57,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:57,100 INFO L85 PathProgramCache]: Analyzing trace with hash 113626786, now seen corresponding path program 1 times [2024-11-27 20:08:57,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:57,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291237848] [2024-11-27 20:08:57,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:57,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-27 20:08:57,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:57,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291237848] [2024-11-27 20:08:57,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291237848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:57,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:57,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:08:57,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203669003] [2024-11-27 20:08:57,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:57,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:08:57,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:57,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:08:57,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:08:57,427 INFO L87 Difference]: Start difference. First operand 19220 states and 21759 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:02,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:02,088 INFO L93 Difference]: Finished difference Result 43955 states and 50452 transitions. [2024-11-27 20:09:02,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:02,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 315 [2024-11-27 20:09:02,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:02,141 INFO L225 Difference]: With dead ends: 43955 [2024-11-27 20:09:02,141 INFO L226 Difference]: Without dead ends: 25524 [2024-11-27 20:09:02,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:02,151 INFO L435 NwaCegarLoop]: 1777 mSDtfsCounter, 841 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:02,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1919 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-27 20:09:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25524 states. [2024-11-27 20:09:02,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25524 to 24733. [2024-11-27 20:09:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24733 states, 24732 states have (on average 1.118591298722303) internal successors, (27665), 24732 states have internal predecessors, (27665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24733 states to 24733 states and 27665 transitions. [2024-11-27 20:09:02,435 INFO L78 Accepts]: Start accepts. Automaton has 24733 states and 27665 transitions. Word has length 315 [2024-11-27 20:09:02,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:02,436 INFO L471 AbstractCegarLoop]: Abstraction has 24733 states and 27665 transitions. [2024-11-27 20:09:02,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:02,437 INFO L276 IsEmpty]: Start isEmpty. Operand 24733 states and 27665 transitions. [2024-11-27 20:09:02,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-27 20:09:02,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:02,445 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:02,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:09:02,445 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:02,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:02,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1008172382, now seen corresponding path program 1 times [2024-11-27 20:09:02,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:02,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804973289] [2024-11-27 20:09:02,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:02,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 20:09:02,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:02,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804973289] [2024-11-27 20:09:02,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804973289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:02,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:02,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:09:02,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468877305] [2024-11-27 20:09:02,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:02,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:09:02,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:02,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:09:02,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:09:02,812 INFO L87 Difference]: Start difference. First operand 24733 states and 27665 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:11,130 INFO L93 Difference]: Finished difference Result 91376 states and 102287 transitions. [2024-11-27 20:09:11,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:09:11,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 324 [2024-11-27 20:09:11,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:11,255 INFO L225 Difference]: With dead ends: 91376 [2024-11-27 20:09:11,256 INFO L226 Difference]: Without dead ends: 67432 [2024-11-27 20:09:11,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 20:09:11,279 INFO L435 NwaCegarLoop]: 573 mSDtfsCounter, 1718 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 6001 mSolverCounterSat, 1098 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 7099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1098 IncrementalHoareTripleChecker+Valid, 6001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:11,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 764 Invalid, 7099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1098 Valid, 6001 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-27 20:09:11,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67432 states. [2024-11-27 20:09:12,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67432 to 64949. [2024-11-27 20:09:12,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64949 states, 64948 states have (on average 1.1045605715341504) internal successors, (71739), 64948 states have internal predecessors, (71739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64949 states to 64949 states and 71739 transitions. [2024-11-27 20:09:12,228 INFO L78 Accepts]: Start accepts. Automaton has 64949 states and 71739 transitions. Word has length 324 [2024-11-27 20:09:12,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:12,229 INFO L471 AbstractCegarLoop]: Abstraction has 64949 states and 71739 transitions. [2024-11-27 20:09:12,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand 64949 states and 71739 transitions. [2024-11-27 20:09:12,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-27 20:09:12,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:12,233 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:09:12,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:09:12,233 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:12,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:12,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1249030675, now seen corresponding path program 1 times [2024-11-27 20:09:12,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:12,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729196878] [2024-11-27 20:09:12,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:12,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-27 20:09:12,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:12,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729196878] [2024-11-27 20:09:12,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729196878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:12,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:12,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:09:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170325306] [2024-11-27 20:09:12,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:12,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:12,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:12,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:12,658 INFO L87 Difference]: Start difference. First operand 64949 states and 71739 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:17,407 INFO L93 Difference]: Finished difference Result 142510 states and 156966 transitions. [2024-11-27 20:09:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:17,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 324 [2024-11-27 20:09:17,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:17,481 INFO L225 Difference]: With dead ends: 142510 [2024-11-27 20:09:17,481 INFO L226 Difference]: Without dead ends: 77563 [2024-11-27 20:09:17,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:17,516 INFO L435 NwaCegarLoop]: 1000 mSDtfsCounter, 728 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:17,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1175 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-27 20:09:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77563 states. [2024-11-27 20:09:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77563 to 75978. [2024-11-27 20:09:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75978 states, 75977 states have (on average 1.0951472156047224) internal successors, (83206), 75977 states have internal predecessors, (83206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75978 states to 75978 states and 83206 transitions. [2024-11-27 20:09:18,659 INFO L78 Accepts]: Start accepts. Automaton has 75978 states and 83206 transitions. Word has length 324 [2024-11-27 20:09:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:18,659 INFO L471 AbstractCegarLoop]: Abstraction has 75978 states and 83206 transitions. [2024-11-27 20:09:18,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 75978 states and 83206 transitions. [2024-11-27 20:09:18,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-27 20:09:18,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:18,664 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2024-11-27 20:09:18,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:09:18,664 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:18,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:18,665 INFO L85 PathProgramCache]: Analyzing trace with hash -152484837, now seen corresponding path program 1 times [2024-11-27 20:09:18,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:18,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039560612] [2024-11-27 20:09:18,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:18,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 218 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 20:09:20,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039560612] [2024-11-27 20:09:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039560612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:20,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636710428] [2024-11-27 20:09:20,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:20,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:20,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:20,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:20,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:09:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:20,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:09:20,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-27 20:09:21,105 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:21,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636710428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:21,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:21,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-27 20:09:21,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303622991] [2024-11-27 20:09:21,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:21,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:21,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:21,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:21,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:09:21,107 INFO L87 Difference]: Start difference. First operand 75978 states and 83206 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:25,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:25,242 INFO L93 Difference]: Finished difference Result 151165 states and 165617 transitions. [2024-11-27 20:09:25,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:25,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 353 [2024-11-27 20:09:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:25,304 INFO L225 Difference]: With dead ends: 151165 [2024-11-27 20:09:25,305 INFO L226 Difference]: Without dead ends: 75976 [2024-11-27 20:09:25,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:09:25,335 INFO L435 NwaCegarLoop]: 1341 mSDtfsCounter, 1112 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:25,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1420 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-27 20:09:25,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75976 states. [2024-11-27 20:09:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75976 to 75975. [2024-11-27 20:09:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75975 states, 75974 states have (on average 1.0758680601258326) internal successors, (81738), 75974 states have internal predecessors, (81738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75975 states to 75975 states and 81738 transitions. [2024-11-27 20:09:26,406 INFO L78 Accepts]: Start accepts. Automaton has 75975 states and 81738 transitions. Word has length 353 [2024-11-27 20:09:26,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:26,407 INFO L471 AbstractCegarLoop]: Abstraction has 75975 states and 81738 transitions. [2024-11-27 20:09:26,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:26,408 INFO L276 IsEmpty]: Start isEmpty. Operand 75975 states and 81738 transitions. [2024-11-27 20:09:26,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-27 20:09:26,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:26,413 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:26,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:09:26,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:09:26,614 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:26,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:26,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2109393606, now seen corresponding path program 1 times [2024-11-27 20:09:26,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:26,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253961982] [2024-11-27 20:09:26,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:26,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-27 20:09:27,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:27,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253961982] [2024-11-27 20:09:27,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253961982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:27,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:27,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:09:27,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195151733] [2024-11-27 20:09:27,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:27,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:27,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:27,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:27,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:27,179 INFO L87 Difference]: Start difference. First operand 75975 states and 81738 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:32,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:32,222 INFO L93 Difference]: Finished difference Result 171631 states and 185876 transitions. [2024-11-27 20:09:32,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:32,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 383 [2024-11-27 20:09:32,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:32,305 INFO L225 Difference]: With dead ends: 171631 [2024-11-27 20:09:32,305 INFO L226 Difference]: Without dead ends: 96445 [2024-11-27 20:09:32,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:32,332 INFO L435 NwaCegarLoop]: 799 mSDtfsCounter, 891 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:32,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 881 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [934 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-27 20:09:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96445 states. [2024-11-27 20:09:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96445 to 93279. [2024-11-27 20:09:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93279 states, 93278 states have (on average 1.08082291644332) internal successors, (100817), 93278 states have internal predecessors, (100817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93279 states to 93279 states and 100817 transitions. [2024-11-27 20:09:33,445 INFO L78 Accepts]: Start accepts. Automaton has 93279 states and 100817 transitions. Word has length 383 [2024-11-27 20:09:33,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:33,445 INFO L471 AbstractCegarLoop]: Abstraction has 93279 states and 100817 transitions. [2024-11-27 20:09:33,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:33,446 INFO L276 IsEmpty]: Start isEmpty. Operand 93279 states and 100817 transitions. [2024-11-27 20:09:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-27 20:09:33,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:33,452 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:09:33,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:09:33,452 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:33,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:33,453 INFO L85 PathProgramCache]: Analyzing trace with hash 66240533, now seen corresponding path program 1 times [2024-11-27 20:09:33,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:33,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654351468] [2024-11-27 20:09:33,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:33,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-27 20:09:33,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:33,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654351468] [2024-11-27 20:09:33,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654351468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:33,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:33,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:09:33,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391899973] [2024-11-27 20:09:33,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:33,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:33,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:33,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:33,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:33,833 INFO L87 Difference]: Start difference. First operand 93279 states and 100817 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:38,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:38,786 INFO L93 Difference]: Finished difference Result 185777 states and 200858 transitions. [2024-11-27 20:09:38,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:38,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 421 [2024-11-27 20:09:38,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:38,874 INFO L225 Difference]: With dead ends: 185777 [2024-11-27 20:09:38,874 INFO L226 Difference]: Without dead ends: 93287 [2024-11-27 20:09:38,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:38,907 INFO L435 NwaCegarLoop]: 1699 mSDtfsCounter, 794 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 3173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:38,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1841 Invalid, 3173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-27 20:09:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93287 states. [2024-11-27 20:09:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93287 to 92482. [2024-11-27 20:09:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92482 states, 92481 states have (on average 1.0581200462797764) internal successors, (97856), 92481 states have internal predecessors, (97856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92482 states to 92482 states and 97856 transitions. [2024-11-27 20:09:39,969 INFO L78 Accepts]: Start accepts. Automaton has 92482 states and 97856 transitions. Word has length 421 [2024-11-27 20:09:39,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:39,970 INFO L471 AbstractCegarLoop]: Abstraction has 92482 states and 97856 transitions. [2024-11-27 20:09:39,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:39,970 INFO L276 IsEmpty]: Start isEmpty. Operand 92482 states and 97856 transitions. [2024-11-27 20:09:39,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-11-27 20:09:39,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:39,978 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:09:39,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:09:39,978 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:39,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:39,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1419491106, now seen corresponding path program 1 times [2024-11-27 20:09:39,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:39,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877711744] [2024-11-27 20:09:39,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:39,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 287 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 20:09:41,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:41,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877711744] [2024-11-27 20:09:41,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877711744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:41,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761873462] [2024-11-27 20:09:41,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:41,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:41,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:41,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:41,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:09:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:42,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:09:42,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-27 20:09:42,529 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:42,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761873462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:42,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:42,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-27 20:09:42,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111786661] [2024-11-27 20:09:42,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:42,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:42,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:42,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:42,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:09:42,531 INFO L87 Difference]: Start difference. First operand 92482 states and 97856 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:47,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:47,331 INFO L93 Difference]: Finished difference Result 180995 states and 192682 transitions. [2024-11-27 20:09:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:47,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 457 [2024-11-27 20:09:47,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:47,413 INFO L225 Difference]: With dead ends: 180995 [2024-11-27 20:09:47,413 INFO L226 Difference]: Without dead ends: 102688 [2024-11-27 20:09:47,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:09:47,436 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 1128 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:47,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 367 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-27 20:09:47,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102688 states. [2024-11-27 20:09:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102688 to 102688. [2024-11-27 20:09:48,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102688 states, 102687 states have (on average 1.0576022281301432) internal successors, (108602), 102687 states have internal predecessors, (108602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:48,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102688 states to 102688 states and 108602 transitions. [2024-11-27 20:09:48,680 INFO L78 Accepts]: Start accepts. Automaton has 102688 states and 108602 transitions. Word has length 457 [2024-11-27 20:09:48,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:48,681 INFO L471 AbstractCegarLoop]: Abstraction has 102688 states and 108602 transitions. [2024-11-27 20:09:48,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:48,681 INFO L276 IsEmpty]: Start isEmpty. Operand 102688 states and 108602 transitions. [2024-11-27 20:09:48,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-11-27 20:09:48,689 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:48,689 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:09:48,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:09:48,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:09:48,890 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:48,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:48,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1347184657, now seen corresponding path program 1 times [2024-11-27 20:09:48,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:48,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127499202] [2024-11-27 20:09:48,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:48,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 287 proven. 113 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 20:09:50,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:50,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127499202] [2024-11-27 20:09:50,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127499202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:50,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536950301] [2024-11-27 20:09:50,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:50,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:50,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:50,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:50,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:09:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:50,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:09:50,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-27 20:09:51,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:51,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536950301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:51,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:51,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-27 20:09:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876301520] [2024-11-27 20:09:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:51,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:51,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:51,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:09:51,854 INFO L87 Difference]: Start difference. First operand 102688 states and 108602 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:55,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:55,966 INFO L93 Difference]: Finished difference Result 195936 states and 207583 transitions. [2024-11-27 20:09:55,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:55,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 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 473 [2024-11-27 20:09:55,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:56,065 INFO L225 Difference]: With dead ends: 195936 [2024-11-27 20:09:56,065 INFO L226 Difference]: Without dead ends: 105846 [2024-11-27 20:09:56,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:09:56,096 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:56,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1121 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 20:09:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105846 states. [2024-11-27 20:09:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105846 to 105837. [2024-11-27 20:09:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105837 states, 105836 states have (on average 1.051787671491742) internal successors, (111317), 105836 states have internal predecessors, (111317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105837 states to 105837 states and 111317 transitions. [2024-11-27 20:09:57,400 INFO L78 Accepts]: Start accepts. Automaton has 105837 states and 111317 transitions. Word has length 473 [2024-11-27 20:09:57,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:57,400 INFO L471 AbstractCegarLoop]: Abstraction has 105837 states and 111317 transitions. [2024-11-27 20:09:57,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:09:57,400 INFO L276 IsEmpty]: Start isEmpty. Operand 105837 states and 111317 transitions. [2024-11-27 20:09:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-27 20:09:57,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:57,408 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:09:57,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:09:57,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9670f08-c39d-4c98-ac89-d9c399eb9765/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:09:57,609 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:57,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:57,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1426219641, now seen corresponding path program 1 times [2024-11-27 20:09:57,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:57,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000899830] [2024-11-27 20:09:57,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:57,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2024-11-27 20:09:57,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:57,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000899830] [2024-11-27 20:09:57,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000899830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:57,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:57,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:09:57,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375880389] [2024-11-27 20:09:57,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:57,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:57,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:57,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:57,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:57,808 INFO L87 Difference]: Start difference. First operand 105837 states and 111317 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:00,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:00,774 INFO L93 Difference]: Finished difference Result 196696 states and 207202 transitions. [2024-11-27 20:10:00,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:00,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 512 [2024-11-27 20:10:00,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:00,864 INFO L225 Difference]: With dead ends: 196696 [2024-11-27 20:10:00,864 INFO L226 Difference]: Without dead ends: 105034 [2024-11-27 20:10:00,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:00,898 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 1558 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:00,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 275 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 20:10:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105034 states. [2024-11-27 20:10:02,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105034 to 105033. [2024-11-27 20:10:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105033 states, 105032 states have (on average 1.0504893746667683) internal successors, (110335), 105032 states have internal predecessors, (110335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105033 states to 105033 states and 110335 transitions. [2024-11-27 20:10:02,191 INFO L78 Accepts]: Start accepts. Automaton has 105033 states and 110335 transitions. Word has length 512 [2024-11-27 20:10:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:02,192 INFO L471 AbstractCegarLoop]: Abstraction has 105033 states and 110335 transitions. [2024-11-27 20:10:02,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:02,192 INFO L276 IsEmpty]: Start isEmpty. Operand 105033 states and 110335 transitions. [2024-11-27 20:10:02,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-27 20:10:02,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:02,202 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 20:10:02,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:10:02,203 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:02,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:02,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1193820110, now seen corresponding path program 1 times [2024-11-27 20:10:02,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:02,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473539871] [2024-11-27 20:10:02,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:02,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-27 20:10:03,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:03,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473539871] [2024-11-27 20:10:03,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473539871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:03,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:03,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:03,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975807524] [2024-11-27 20:10:03,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:03,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:03,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:03,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:03,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:03,041 INFO L87 Difference]: Start difference. First operand 105033 states and 110335 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:07,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:07,113 INFO L93 Difference]: Finished difference Result 196682 states and 207037 transitions. [2024-11-27 20:10:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:07,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 526 [2024-11-27 20:10:07,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:07,199 INFO L225 Difference]: With dead ends: 196682 [2024-11-27 20:10:07,199 INFO L226 Difference]: Without dead ends: 105824 [2024-11-27 20:10:07,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:07,231 INFO L435 NwaCegarLoop]: 1704 mSDtfsCounter, 609 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:07,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1828 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-27 20:10:07,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105824 states. [2024-11-27 20:10:08,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105824 to 105821. [2024-11-27 20:10:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105821 states, 105820 states have (on average 1.0503685503685503) internal successors, (111150), 105820 states have internal predecessors, (111150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105821 states to 105821 states and 111150 transitions. [2024-11-27 20:10:08,247 INFO L78 Accepts]: Start accepts. Automaton has 105821 states and 111150 transitions. Word has length 526 [2024-11-27 20:10:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:08,247 INFO L471 AbstractCegarLoop]: Abstraction has 105821 states and 111150 transitions. [2024-11-27 20:10:08,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 105821 states and 111150 transitions. [2024-11-27 20:10:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2024-11-27 20:10:08,255 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:08,255 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:10:08,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:10:08,255 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:08,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1535643174, now seen corresponding path program 1 times [2024-11-27 20:10:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032367622] [2024-11-27 20:10:08,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 623 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2024-11-27 20:10:08,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:08,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032367622] [2024-11-27 20:10:08,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032367622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:08,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:08,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:08,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670466015] [2024-11-27 20:10:08,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:08,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:08,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:08,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:08,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:08,866 INFO L87 Difference]: Start difference. First operand 105821 states and 111150 transitions. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 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 20:10:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:13,987 INFO L93 Difference]: Finished difference Result 233707 states and 246460 transitions. [2024-11-27 20:10:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:13,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 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 557 [2024-11-27 20:10:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:14,138 INFO L225 Difference]: With dead ends: 233707 [2024-11-27 20:10:14,138 INFO L226 Difference]: Without dead ends: 142061 [2024-11-27 20:10:14,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:14,186 INFO L435 NwaCegarLoop]: 585 mSDtfsCounter, 949 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 852 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 852 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:14,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 661 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [852 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-27 20:10:14,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142061 states. [2024-11-27 20:10:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142061 to 142057. [2024-11-27 20:10:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142057 states, 142056 states have (on average 1.04936785493045) internal successors, (149069), 142056 states have internal predecessors, (149069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142057 states to 142057 states and 149069 transitions. [2024-11-27 20:10:15,982 INFO L78 Accepts]: Start accepts. Automaton has 142057 states and 149069 transitions. Word has length 557 [2024-11-27 20:10:15,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:15,983 INFO L471 AbstractCegarLoop]: Abstraction has 142057 states and 149069 transitions. [2024-11-27 20:10:15,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 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 20:10:15,983 INFO L276 IsEmpty]: Start isEmpty. Operand 142057 states and 149069 transitions. [2024-11-27 20:10:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2024-11-27 20:10:15,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:15,992 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:10:15,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:10:15,992 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:15,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:15,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2008151319, now seen corresponding path program 1 times [2024-11-27 20:10:15,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:15,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093845825] [2024-11-27 20:10:15,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:15,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-27 20:10:16,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:16,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093845825] [2024-11-27 20:10:16,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093845825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:16,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:16,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:16,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558368688] [2024-11-27 20:10:16,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:16,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:16,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:16,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:16,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:16,340 INFO L87 Difference]: Start difference. First operand 142057 states and 149069 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 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 20:10:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:20,738 INFO L93 Difference]: Finished difference Result 284908 states and 298944 transitions. [2024-11-27 20:10:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:20,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 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 604 [2024-11-27 20:10:20,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:20,889 INFO L225 Difference]: With dead ends: 284908 [2024-11-27 20:10:20,889 INFO L226 Difference]: Without dead ends: 143640 [2024-11-27 20:10:20,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:20,945 INFO L435 NwaCegarLoop]: 1328 mSDtfsCounter, 914 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:20,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 1402 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-27 20:10:21,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143640 states. [2024-11-27 20:10:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143640 to 142055. [2024-11-27 20:10:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142055 states, 142054 states have (on average 1.041336393202585) internal successors, (147926), 142054 states have internal predecessors, (147926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142055 states to 142055 states and 147926 transitions. [2024-11-27 20:10:22,693 INFO L78 Accepts]: Start accepts. Automaton has 142055 states and 147926 transitions. Word has length 604 [2024-11-27 20:10:22,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:22,694 INFO L471 AbstractCegarLoop]: Abstraction has 142055 states and 147926 transitions. [2024-11-27 20:10:22,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 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 20:10:22,694 INFO L276 IsEmpty]: Start isEmpty. Operand 142055 states and 147926 transitions. [2024-11-27 20:10:22,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2024-11-27 20:10:22,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:22,706 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:10:22,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:10:22,706 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:22,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:22,707 INFO L85 PathProgramCache]: Analyzing trace with hash -396988463, now seen corresponding path program 1 times [2024-11-27 20:10:22,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:22,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833425583] [2024-11-27 20:10:22,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:22,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 799 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-27 20:10:23,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:23,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833425583] [2024-11-27 20:10:23,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833425583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:23,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:23,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:23,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598739348] [2024-11-27 20:10:23,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:23,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:23,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:23,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:23,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:23,559 INFO L87 Difference]: Start difference. First operand 142055 states and 147926 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:28,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:28,189 INFO L93 Difference]: Finished difference Result 271527 states and 283053 transitions. [2024-11-27 20:10:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:28,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 606 [2024-11-27 20:10:28,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:28,312 INFO L225 Difference]: With dead ends: 271527 [2024-11-27 20:10:28,312 INFO L226 Difference]: Without dead ends: 142068 [2024-11-27 20:10:28,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:28,352 INFO L435 NwaCegarLoop]: 1583 mSDtfsCounter, 771 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:28,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1711 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 20:10:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142068 states. [2024-11-27 20:10:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142068 to 142051. [2024-11-27 20:10:29,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142051 states, 142050 states have (on average 1.0384794086589229) internal successors, (147516), 142050 states have internal predecessors, (147516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142051 states to 142051 states and 147516 transitions. [2024-11-27 20:10:29,757 INFO L78 Accepts]: Start accepts. Automaton has 142051 states and 147516 transitions. Word has length 606 [2024-11-27 20:10:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:29,758 INFO L471 AbstractCegarLoop]: Abstraction has 142051 states and 147516 transitions. [2024-11-27 20:10:29,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 142051 states and 147516 transitions. [2024-11-27 20:10:29,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2024-11-27 20:10:29,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:29,769 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 20:10:29,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:10:29,769 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:29,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1315800132, now seen corresponding path program 1 times [2024-11-27 20:10:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:29,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898287553] [2024-11-27 20:10:29,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:29,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2024-11-27 20:10:30,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:30,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898287553] [2024-11-27 20:10:30,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898287553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:30,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:30,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:30,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206040698] [2024-11-27 20:10:30,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:30,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:30,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:30,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:30,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:30,526 INFO L87 Difference]: Start difference. First operand 142051 states and 147516 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:34,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:34,940 INFO L93 Difference]: Finished difference Result 286449 states and 297555 transitions. [2024-11-27 20:10:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:34,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 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 620 [2024-11-27 20:10:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:35,092 INFO L225 Difference]: With dead ends: 286449 [2024-11-27 20:10:35,093 INFO L226 Difference]: Without dead ends: 150695 [2024-11-27 20:10:35,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:35,137 INFO L435 NwaCegarLoop]: 1617 mSDtfsCounter, 666 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:35,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1738 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-27 20:10:35,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150695 states. [2024-11-27 20:10:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150695 to 144395. [2024-11-27 20:10:36,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144395 states, 144394 states have (on average 1.0358671412939595) internal successors, (149573), 144394 states have internal predecessors, (149573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144395 states to 144395 states and 149573 transitions. [2024-11-27 20:10:36,874 INFO L78 Accepts]: Start accepts. Automaton has 144395 states and 149573 transitions. Word has length 620 [2024-11-27 20:10:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:36,874 INFO L471 AbstractCegarLoop]: Abstraction has 144395 states and 149573 transitions. [2024-11-27 20:10:36,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 144395 states and 149573 transitions. [2024-11-27 20:10:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2024-11-27 20:10:36,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:36,882 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 20:10:36,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:10:36,882 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:36,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:36,883 INFO L85 PathProgramCache]: Analyzing trace with hash -206759590, now seen corresponding path program 1 times [2024-11-27 20:10:36,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:36,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381503066] [2024-11-27 20:10:36,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:36,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 760 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-27 20:10:38,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:38,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381503066] [2024-11-27 20:10:38,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381503066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:38,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:38,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:38,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19754935] [2024-11-27 20:10:38,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:38,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:38,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:38,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:38,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:38,175 INFO L87 Difference]: Start difference. First operand 144395 states and 149573 transitions. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)