./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 65758d30abe63111d5fe7d6f3755a15e393bf1c256a01ab73d247ce5927c073a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:26:59,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:26:59,097 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:26:59,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:26:59,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:26:59,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:26:59,143 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:26:59,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:26:59,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:26:59,144 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:26:59,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:26:59,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:26:59,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:26:59,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:26:59,146 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:26:59,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:26:59,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:26:59,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:26:59,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:26:59,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:26:59,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:26:59,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:26:59,147 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:26:59,147 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:26:59,147 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:26:59,147 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:26:59,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:26:59,148 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:26:59,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:26:59,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:26:59,148 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:26:59,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:26:59,148 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:26:59,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:26:59,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:26:59,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:26:59,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:26:59,149 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:26:59,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:26:59,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:26:59,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:26:59,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:26:59,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:26:59,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:26:59,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:26:59,150 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_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65758d30abe63111d5fe7d6f3755a15e393bf1c256a01ab73d247ce5927c073a [2024-11-23 23:26:59,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:26:59,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:26:59,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:26:59,440 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:26:59,440 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:26:59,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c [2024-11-23 23:27:02,581 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/data/e91c54bf1/7cac554c80f34737913483fdda99d08a/FLAG08f0c2e58 [2024-11-23 23:27:02,928 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:27:02,929 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c [2024-11-23 23:27:02,941 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/data/e91c54bf1/7cac554c80f34737913483fdda99d08a/FLAG08f0c2e58 [2024-11-23 23:27:03,160 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/data/e91c54bf1/7cac554c80f34737913483fdda99d08a [2024-11-23 23:27:03,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:27:03,163 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:27:03,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:27:03,165 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:27:03,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:27:03,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:03,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f1ecfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03, skipping insertion in model container [2024-11-23 23:27:03,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:03,205 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:27:03,381 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_1d8a9ef8-9d8b-417e-a763-7a540118d6df/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c[1251,1264] [2024-11-23 23:27:03,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:27:03,666 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:27:03,675 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_1d8a9ef8-9d8b-417e-a763-7a540118d6df/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2001.c[1251,1264] [2024-11-23 23:27:03,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:27:03,840 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:27:03,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03 WrapperNode [2024-11-23 23:27:03,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:27:03,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:27:03,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:27:03,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:27:03,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:03,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,140 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1563 [2024-11-23 23:27:04,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:27:04,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:27:04,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:27:04,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:27:04,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,188 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,297 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]. [2024-11-23 23:27:04,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,372 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,518 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:27:04,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:27:04,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:27:04,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:27:04,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (1/1) ... [2024-11-23 23:27:04,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:27:04,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:27:04,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:27:04,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:27:04,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:27:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:27:04,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:27:04,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:27:04,891 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:27:04,893 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:27:07,472 INFO L? ?]: Removed 994 outVars from TransFormulas that were not future-live. [2024-11-23 23:27:07,472 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:27:07,497 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:27:07,501 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 23:27:07,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:27:07 BoogieIcfgContainer [2024-11-23 23:27:07,501 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:27:07,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:27:07,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:27:07,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:27:07,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:27:03" (1/3) ... [2024-11-23 23:27:07,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d812ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:27:07, skipping insertion in model container [2024-11-23 23:27:07,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:03" (2/3) ... [2024-11-23 23:27:07,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d812ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:27:07, skipping insertion in model container [2024-11-23 23:27:07,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:27:07" (3/3) ... [2024-11-23 23:27:07,513 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2001.c [2024-11-23 23:27:07,530 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:27:07,531 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.sw_ball2001.c that has 1 procedures, 466 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:27:07,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:27:07,616 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;@5f373332, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:27:07,617 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:27:07,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 466 states, 464 states have (on average 1.4978448275862069) internal successors, (695), 465 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:07,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-23 23:27:07,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:07,634 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:07,635 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:07,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:07,641 INFO L85 PathProgramCache]: Analyzing trace with hash -291779837, now seen corresponding path program 1 times [2024-11-23 23:27:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:07,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136513459] [2024-11-23 23:27:07,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:07,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:08,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136513459] [2024-11-23 23:27:08,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136513459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:08,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:08,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:27:08,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388104053] [2024-11-23 23:27:08,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:08,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:27:08,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:08,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:27:08,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:27:08,512 INFO L87 Difference]: Start difference. First operand has 466 states, 464 states have (on average 1.4978448275862069) internal successors, (695), 465 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:08,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:08,643 INFO L93 Difference]: Finished difference Result 873 states and 1305 transitions. [2024-11-23 23:27:08,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:27:08,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-23 23:27:08,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:08,656 INFO L225 Difference]: With dead ends: 873 [2024-11-23 23:27:08,656 INFO L226 Difference]: Without dead ends: 465 [2024-11-23 23:27:08,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:27:08,663 INFO L435 NwaCegarLoop]: 689 mSDtfsCounter, 0 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:08,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2061 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-23 23:27:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2024-11-23 23:27:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.4935344827586208) internal successors, (693), 464 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:08,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 693 transitions. [2024-11-23 23:27:08,744 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 693 transitions. Word has length 37 [2024-11-23 23:27:08,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:08,748 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 693 transitions. [2024-11-23 23:27:08,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:08,749 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 693 transitions. [2024-11-23 23:27:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 23:27:08,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:08,754 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:08,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:27:08,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:08,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash -453544994, now seen corresponding path program 1 times [2024-11-23 23:27:08,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:08,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720652294] [2024-11-23 23:27:08,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:08,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:09,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:09,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720652294] [2024-11-23 23:27:09,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720652294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:09,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:09,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:27:09,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747376946] [2024-11-23 23:27:09,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:09,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:27:09,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:09,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:27:09,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:27:09,095 INFO L87 Difference]: Start difference. First operand 465 states and 693 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:09,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:09,207 INFO L93 Difference]: Finished difference Result 874 states and 1303 transitions. [2024-11-23 23:27:09,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:27:09,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-23 23:27:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:09,211 INFO L225 Difference]: With dead ends: 874 [2024-11-23 23:27:09,215 INFO L226 Difference]: Without dead ends: 467 [2024-11-23 23:27:09,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:27:09,217 INFO L435 NwaCegarLoop]: 689 mSDtfsCounter, 0 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:09,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2057 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:09,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-23 23:27:09,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2024-11-23 23:27:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.4914163090128756) internal successors, (695), 466 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 695 transitions. [2024-11-23 23:27:09,293 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 695 transitions. Word has length 38 [2024-11-23 23:27:09,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:09,293 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 695 transitions. [2024-11-23 23:27:09,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:09,294 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 695 transitions. [2024-11-23 23:27:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 23:27:09,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:09,295 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:09,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:27:09,295 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:09,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:09,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2022008636, now seen corresponding path program 1 times [2024-11-23 23:27:09,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:09,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035890599] [2024-11-23 23:27:09,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:09,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:09,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:09,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035890599] [2024-11-23 23:27:09,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035890599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:09,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:09,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:09,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864131721] [2024-11-23 23:27:09,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:09,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:09,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:09,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:09,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:09,658 INFO L87 Difference]: Start difference. First operand 467 states and 695 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:09,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:09,853 INFO L93 Difference]: Finished difference Result 1251 states and 1864 transitions. [2024-11-23 23:27:09,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:09,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-23 23:27:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:09,858 INFO L225 Difference]: With dead ends: 1251 [2024-11-23 23:27:09,858 INFO L226 Difference]: Without dead ends: 842 [2024-11-23 23:27:09,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:09,865 INFO L435 NwaCegarLoop]: 677 mSDtfsCounter, 1779 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:09,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1779 Valid, 2025 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2024-11-23 23:27:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 469. [2024-11-23 23:27:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.4893162393162394) internal successors, (697), 468 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:09,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 697 transitions. [2024-11-23 23:27:09,895 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 697 transitions. Word has length 39 [2024-11-23 23:27:09,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:09,895 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 697 transitions. [2024-11-23 23:27:09,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:09,896 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 697 transitions. [2024-11-23 23:27:09,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-23 23:27:09,913 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:09,914 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:09,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:27:09,914 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:09,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1367168172, now seen corresponding path program 1 times [2024-11-23 23:27:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:09,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311373179] [2024-11-23 23:27:09,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:12,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:12,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311373179] [2024-11-23 23:27:12,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311373179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:12,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:12,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:27:12,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431324816] [2024-11-23 23:27:12,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:12,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:27:12,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:12,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:27:12,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:27:12,657 INFO L87 Difference]: Start difference. First operand 469 states and 697 transitions. Second operand has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:12,891 INFO L93 Difference]: Finished difference Result 1274 states and 1898 transitions. [2024-11-23 23:27:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:27:12,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2024-11-23 23:27:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:12,898 INFO L225 Difference]: With dead ends: 1274 [2024-11-23 23:27:12,898 INFO L226 Difference]: Without dead ends: 865 [2024-11-23 23:27:12,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:27:12,900 INFO L435 NwaCegarLoop]: 675 mSDtfsCounter, 1832 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:12,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1832 Valid, 2592 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:12,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2024-11-23 23:27:12,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 490. [2024-11-23 23:27:12,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.4826175869120655) internal successors, (725), 489 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 725 transitions. [2024-11-23 23:27:12,930 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 725 transitions. Word has length 242 [2024-11-23 23:27:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:12,931 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 725 transitions. [2024-11-23 23:27:12,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 725 transitions. [2024-11-23 23:27:12,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-23 23:27:12,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:12,939 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:12,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:27:12,940 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:12,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:12,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1701862998, now seen corresponding path program 1 times [2024-11-23 23:27:12,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:12,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722244968] [2024-11-23 23:27:12,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:12,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722244968] [2024-11-23 23:27:15,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722244968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:15,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:15,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:15,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698719920] [2024-11-23 23:27:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:15,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:15,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:15,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:15,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:15,550 INFO L87 Difference]: Start difference. First operand 490 states and 725 transitions. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:15,782 INFO L93 Difference]: Finished difference Result 1270 states and 1890 transitions. [2024-11-23 23:27:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:15,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2024-11-23 23:27:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:15,787 INFO L225 Difference]: With dead ends: 1270 [2024-11-23 23:27:15,787 INFO L226 Difference]: Without dead ends: 861 [2024-11-23 23:27:15,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:15,789 INFO L435 NwaCegarLoop]: 672 mSDtfsCounter, 1788 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1788 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:15,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1788 Valid, 2013 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2024-11-23 23:27:15,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 539. [2024-11-23 23:27:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.4814126394052045) internal successors, (797), 538 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 797 transitions. [2024-11-23 23:27:15,812 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 797 transitions. Word has length 243 [2024-11-23 23:27:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:15,812 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 797 transitions. [2024-11-23 23:27:15,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 797 transitions. [2024-11-23 23:27:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-23 23:27:15,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:15,816 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:15,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:27:15,817 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:15,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:15,818 INFO L85 PathProgramCache]: Analyzing trace with hash 897224313, now seen corresponding path program 1 times [2024-11-23 23:27:15,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:15,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753113362] [2024-11-23 23:27:15,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:15,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:18,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753113362] [2024-11-23 23:27:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753113362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:18,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680306758] [2024-11-23 23:27:18,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:18,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:18,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:18,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:18,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:18,598 INFO L87 Difference]: Start difference. First operand 539 states and 797 transitions. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:18,782 INFO L93 Difference]: Finished difference Result 1270 states and 1888 transitions. [2024-11-23 23:27:18,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:18,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2024-11-23 23:27:18,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:18,787 INFO L225 Difference]: With dead ends: 1270 [2024-11-23 23:27:18,788 INFO L226 Difference]: Without dead ends: 861 [2024-11-23 23:27:18,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:18,793 INFO L435 NwaCegarLoop]: 671 mSDtfsCounter, 1732 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:18,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 2012 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:18,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2024-11-23 23:27:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 642. [2024-11-23 23:27:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4820592823712948) internal successors, (950), 641 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 950 transitions. [2024-11-23 23:27:18,821 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 950 transitions. Word has length 245 [2024-11-23 23:27:18,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:18,822 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 950 transitions. [2024-11-23 23:27:18,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:18,823 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 950 transitions. [2024-11-23 23:27:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-23 23:27:18,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:18,830 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:18,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:27:18,830 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:18,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:18,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2126419276, now seen corresponding path program 1 times [2024-11-23 23:27:18,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:18,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229421073] [2024-11-23 23:27:18,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:20,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:20,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229421073] [2024-11-23 23:27:20,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229421073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:20,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:20,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:27:20,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285144309] [2024-11-23 23:27:20,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:20,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:20,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:20,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:20,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:20,930 INFO L87 Difference]: Start difference. First operand 642 states and 950 transitions. Second operand has 7 states, 7 states have (on average 35.142857142857146) internal successors, (246), 7 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:21,220 INFO L93 Difference]: Finished difference Result 1274 states and 1893 transitions. [2024-11-23 23:27:21,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:27:21,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.142857142857146) internal successors, (246), 7 states have internal predecessors, (246), 0 states have call successors, (0), 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 246 [2024-11-23 23:27:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:21,226 INFO L225 Difference]: With dead ends: 1274 [2024-11-23 23:27:21,226 INFO L226 Difference]: Without dead ends: 865 [2024-11-23 23:27:21,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:21,228 INFO L435 NwaCegarLoop]: 669 mSDtfsCounter, 1739 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:21,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 3233 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:27:21,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2024-11-23 23:27:21,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 645. [2024-11-23 23:27:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.4813664596273293) internal successors, (954), 644 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 954 transitions. [2024-11-23 23:27:21,254 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 954 transitions. Word has length 246 [2024-11-23 23:27:21,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:21,254 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 954 transitions. [2024-11-23 23:27:21,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.142857142857146) internal successors, (246), 7 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:21,255 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 954 transitions. [2024-11-23 23:27:21,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-23 23:27:21,259 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:21,259 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:21,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:27:21,259 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:21,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:21,260 INFO L85 PathProgramCache]: Analyzing trace with hash 226518912, now seen corresponding path program 1 times [2024-11-23 23:27:21,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:21,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055585380] [2024-11-23 23:27:21,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:21,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:23,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:23,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055585380] [2024-11-23 23:27:23,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055585380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:23,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:23,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:23,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125473652] [2024-11-23 23:27:23,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:23,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:23,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:23,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:23,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:23,507 INFO L87 Difference]: Start difference. First operand 645 states and 954 transitions. Second operand has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:23,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:23,711 INFO L93 Difference]: Finished difference Result 1309 states and 1943 transitions. [2024-11-23 23:27:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:23,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2024-11-23 23:27:23,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:23,716 INFO L225 Difference]: With dead ends: 1309 [2024-11-23 23:27:23,717 INFO L226 Difference]: Without dead ends: 863 [2024-11-23 23:27:23,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:23,718 INFO L435 NwaCegarLoop]: 671 mSDtfsCounter, 1748 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:23,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 2012 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-11-23 23:27:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 645. [2024-11-23 23:27:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.4798136645962734) internal successors, (953), 644 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:23,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 953 transitions. [2024-11-23 23:27:23,743 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 953 transitions. Word has length 247 [2024-11-23 23:27:23,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:23,743 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 953 transitions. [2024-11-23 23:27:23,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:23,743 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 953 transitions. [2024-11-23 23:27:23,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-23 23:27:23,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:23,748 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:23,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:27:23,748 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:23,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:23,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1955690652, now seen corresponding path program 1 times [2024-11-23 23:27:23,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:23,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565082563] [2024-11-23 23:27:23,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:23,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:26,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:26,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565082563] [2024-11-23 23:27:26,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565082563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:26,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:26,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:26,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911516365] [2024-11-23 23:27:26,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:26,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:26,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:26,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:26,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:26,250 INFO L87 Difference]: Start difference. First operand 645 states and 953 transitions. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:26,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:26,583 INFO L93 Difference]: Finished difference Result 1272 states and 1888 transitions. [2024-11-23 23:27:26,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:26,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 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 248 [2024-11-23 23:27:26,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:26,591 INFO L225 Difference]: With dead ends: 1272 [2024-11-23 23:27:26,592 INFO L226 Difference]: Without dead ends: 863 [2024-11-23 23:27:26,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:26,594 INFO L435 NwaCegarLoop]: 671 mSDtfsCounter, 1671 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:26,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 2012 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:27:26,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-11-23 23:27:26,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 752. [2024-11-23 23:27:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 1.4806924101198402) internal successors, (1112), 751 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1112 transitions. [2024-11-23 23:27:26,622 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1112 transitions. Word has length 248 [2024-11-23 23:27:26,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:26,622 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 1112 transitions. [2024-11-23 23:27:26,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:26,623 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1112 transitions. [2024-11-23 23:27:26,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-23 23:27:26,627 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:26,627 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:26,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:27:26,628 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:26,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:26,630 INFO L85 PathProgramCache]: Analyzing trace with hash 907590606, now seen corresponding path program 1 times [2024-11-23 23:27:26,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:26,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798256027] [2024-11-23 23:27:26,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:28,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798256027] [2024-11-23 23:27:28,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798256027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:28,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:28,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:28,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254534358] [2024-11-23 23:27:28,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:28,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:28,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:28,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:28,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:28,899 INFO L87 Difference]: Start difference. First operand 752 states and 1112 transitions. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:29,118 INFO L93 Difference]: Finished difference Result 1342 states and 1991 transitions. [2024-11-23 23:27:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:29,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2024-11-23 23:27:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:29,124 INFO L225 Difference]: With dead ends: 1342 [2024-11-23 23:27:29,124 INFO L226 Difference]: Without dead ends: 863 [2024-11-23 23:27:29,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:29,127 INFO L435 NwaCegarLoop]: 671 mSDtfsCounter, 1705 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:29,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 2012 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:29,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-11-23 23:27:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 752. [2024-11-23 23:27:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 1.4793608521970705) internal successors, (1111), 751 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1111 transitions. [2024-11-23 23:27:29,162 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1111 transitions. Word has length 249 [2024-11-23 23:27:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:29,163 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 1111 transitions. [2024-11-23 23:27:29,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:29,163 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1111 transitions. [2024-11-23 23:27:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-23 23:27:29,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:29,169 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:29,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:27:29,170 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:29,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:29,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1532717082, now seen corresponding path program 1 times [2024-11-23 23:27:29,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:29,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130577641] [2024-11-23 23:27:29,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:29,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:31,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:31,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130577641] [2024-11-23 23:27:31,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130577641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:31,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:31,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:27:31,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979906238] [2024-11-23 23:27:31,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:31,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:31,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:31,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:31,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:31,198 INFO L87 Difference]: Start difference. First operand 752 states and 1111 transitions. Second operand has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:31,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:31,429 INFO L93 Difference]: Finished difference Result 1342 states and 1990 transitions. [2024-11-23 23:27:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:27:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 0 states have call successors, (0), 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 250 [2024-11-23 23:27:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:31,433 INFO L225 Difference]: With dead ends: 1342 [2024-11-23 23:27:31,433 INFO L226 Difference]: Without dead ends: 867 [2024-11-23 23:27:31,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:31,435 INFO L435 NwaCegarLoop]: 669 mSDtfsCounter, 1713 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 3120 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:31,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 3120 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2024-11-23 23:27:31,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 754. [2024-11-23 23:27:31,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.4780876494023905) internal successors, (1113), 753 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1113 transitions. [2024-11-23 23:27:31,461 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1113 transitions. Word has length 250 [2024-11-23 23:27:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:31,461 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1113 transitions. [2024-11-23 23:27:31,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1113 transitions. [2024-11-23 23:27:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-23 23:27:31,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:31,466 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:31,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:27:31,467 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:31,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:31,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1642312903, now seen corresponding path program 1 times [2024-11-23 23:27:31,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:31,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918895729] [2024-11-23 23:27:31,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:31,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:33,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:33,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918895729] [2024-11-23 23:27:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918895729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:33,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:33,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:33,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900168661] [2024-11-23 23:27:33,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:33,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:33,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:33,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:33,589 INFO L87 Difference]: Start difference. First operand 754 states and 1113 transitions. Second operand has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:33,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:33,779 INFO L93 Difference]: Finished difference Result 1308 states and 1938 transitions. [2024-11-23 23:27:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:33,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2024-11-23 23:27:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:33,786 INFO L225 Difference]: With dead ends: 1308 [2024-11-23 23:27:33,786 INFO L226 Difference]: Without dead ends: 865 [2024-11-23 23:27:33,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:33,788 INFO L435 NwaCegarLoop]: 671 mSDtfsCounter, 1683 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:33,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1683 Valid, 2012 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:33,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2024-11-23 23:27:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 754. [2024-11-23 23:27:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.4767596281540505) internal successors, (1112), 753 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1112 transitions. [2024-11-23 23:27:33,813 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1112 transitions. Word has length 251 [2024-11-23 23:27:33,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:33,813 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1112 transitions. [2024-11-23 23:27:33,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1112 transitions. [2024-11-23 23:27:33,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:27:33,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:33,817 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:33,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:27:33,818 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:33,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:33,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2067060094, now seen corresponding path program 1 times [2024-11-23 23:27:33,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:33,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731013915] [2024-11-23 23:27:33,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:33,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:35,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:35,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731013915] [2024-11-23 23:27:35,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731013915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:35,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:35,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:27:35,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252826914] [2024-11-23 23:27:35,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:35,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:35,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:35,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:35,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:35,724 INFO L87 Difference]: Start difference. First operand 754 states and 1112 transitions. Second operand has 7 states, 7 states have (on average 36.0) internal successors, (252), 7 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:35,984 INFO L93 Difference]: Finished difference Result 1344 states and 1990 transitions. [2024-11-23 23:27:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:27:35,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.0) internal successors, (252), 7 states have internal predecessors, (252), 0 states have call successors, (0), 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 252 [2024-11-23 23:27:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:35,989 INFO L225 Difference]: With dead ends: 1344 [2024-11-23 23:27:35,989 INFO L226 Difference]: Without dead ends: 873 [2024-11-23 23:27:35,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:35,992 INFO L435 NwaCegarLoop]: 670 mSDtfsCounter, 1719 mSDsluCounter, 2569 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:35,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 3239 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:27:35,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-11-23 23:27:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 756. [2024-11-23 23:27:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 1.4754966887417218) internal successors, (1114), 755 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1114 transitions. [2024-11-23 23:27:36,018 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1114 transitions. Word has length 252 [2024-11-23 23:27:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:36,019 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 1114 transitions. [2024-11-23 23:27:36,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.0) internal successors, (252), 7 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:36,020 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1114 transitions. [2024-11-23 23:27:36,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-23 23:27:36,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:36,024 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:36,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:27:36,025 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:36,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:36,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1511218974, now seen corresponding path program 1 times [2024-11-23 23:27:36,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:36,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61234201] [2024-11-23 23:27:36,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:38,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:38,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61234201] [2024-11-23 23:27:38,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61234201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:38,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:38,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:27:38,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739516137] [2024-11-23 23:27:38,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:38,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:38,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:38,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:38,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:38,139 INFO L87 Difference]: Start difference. First operand 756 states and 1114 transitions. Second operand has 7 states, 7 states have (on average 36.0) internal successors, (252), 7 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:38,369 INFO L93 Difference]: Finished difference Result 1280 states and 1895 transitions. [2024-11-23 23:27:38,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:27:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.0) internal successors, (252), 7 states have internal predecessors, (252), 0 states have call successors, (0), 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 252 [2024-11-23 23:27:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:38,373 INFO L225 Difference]: With dead ends: 1280 [2024-11-23 23:27:38,374 INFO L226 Difference]: Without dead ends: 871 [2024-11-23 23:27:38,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:38,375 INFO L435 NwaCegarLoop]: 669 mSDtfsCounter, 1671 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:38,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 3229 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:38,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2024-11-23 23:27:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 759. [2024-11-23 23:27:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 1.474934036939314) internal successors, (1118), 758 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1118 transitions. [2024-11-23 23:27:38,399 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1118 transitions. Word has length 252 [2024-11-23 23:27:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:38,399 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 1118 transitions. [2024-11-23 23:27:38,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.0) internal successors, (252), 7 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1118 transitions. [2024-11-23 23:27:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-23 23:27:38,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:38,403 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:38,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:27:38,404 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:38,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:38,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1634203021, now seen corresponding path program 1 times [2024-11-23 23:27:38,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:38,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871022737] [2024-11-23 23:27:38,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:38,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:40,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:40,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871022737] [2024-11-23 23:27:40,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871022737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:40,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:40,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:27:40,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150255450] [2024-11-23 23:27:40,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:40,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:40,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:40,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:40,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:40,055 INFO L87 Difference]: Start difference. First operand 759 states and 1118 transitions. Second operand has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 7 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:40,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:40,278 INFO L93 Difference]: Finished difference Result 1315 states and 1945 transitions. [2024-11-23 23:27:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:27:40,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 7 states have internal predecessors, (253), 0 states have call successors, (0), 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 253 [2024-11-23 23:27:40,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:40,283 INFO L225 Difference]: With dead ends: 1315 [2024-11-23 23:27:40,283 INFO L226 Difference]: Without dead ends: 873 [2024-11-23 23:27:40,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:40,286 INFO L435 NwaCegarLoop]: 669 mSDtfsCounter, 1691 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:40,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1691 Valid, 3118 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:40,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-11-23 23:27:40,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 761. [2024-11-23 23:27:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 1.4736842105263157) internal successors, (1120), 760 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1120 transitions. [2024-11-23 23:27:40,312 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1120 transitions. Word has length 253 [2024-11-23 23:27:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:40,312 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1120 transitions. [2024-11-23 23:27:40,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 7 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:40,313 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1120 transitions. [2024-11-23 23:27:40,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-23 23:27:40,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:40,317 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:40,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:27:40,318 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:40,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:40,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1485305971, now seen corresponding path program 1 times [2024-11-23 23:27:40,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:40,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24517849] [2024-11-23 23:27:40,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:40,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:41,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:41,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:41,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24517849] [2024-11-23 23:27:41,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24517849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:41,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:41,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:27:41,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062900522] [2024-11-23 23:27:41,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:41,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:41,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:41,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:41,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:41,834 INFO L87 Difference]: Start difference. First operand 761 states and 1120 transitions. Second operand has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 7 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:42,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:42,063 INFO L93 Difference]: Finished difference Result 1288 states and 1905 transitions. [2024-11-23 23:27:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:27:42,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 7 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2024-11-23 23:27:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:42,068 INFO L225 Difference]: With dead ends: 1288 [2024-11-23 23:27:42,068 INFO L226 Difference]: Without dead ends: 879 [2024-11-23 23:27:42,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:42,070 INFO L435 NwaCegarLoop]: 670 mSDtfsCounter, 1679 mSDsluCounter, 2569 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:42,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1679 Valid, 3239 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:42,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2024-11-23 23:27:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 767. [2024-11-23 23:27:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 1.4725848563968669) internal successors, (1128), 766 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1128 transitions. [2024-11-23 23:27:42,095 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1128 transitions. Word has length 254 [2024-11-23 23:27:42,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:42,096 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1128 transitions. [2024-11-23 23:27:42,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 7 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:42,096 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1128 transitions. [2024-11-23 23:27:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-23 23:27:42,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:42,100 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:42,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:27:42,100 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:42,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash -576171735, now seen corresponding path program 1 times [2024-11-23 23:27:42,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:42,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040835042] [2024-11-23 23:27:42,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:42,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:43,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:43,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040835042] [2024-11-23 23:27:43,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040835042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:43,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:43,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:27:43,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501188955] [2024-11-23 23:27:43,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:43,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:43,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:43,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:43,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:43,958 INFO L87 Difference]: Start difference. First operand 767 states and 1128 transitions. Second operand has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 7 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:44,198 INFO L93 Difference]: Finished difference Result 1325 states and 1957 transitions. [2024-11-23 23:27:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:27:44,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 7 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2024-11-23 23:27:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:44,203 INFO L225 Difference]: With dead ends: 1325 [2024-11-23 23:27:44,204 INFO L226 Difference]: Without dead ends: 881 [2024-11-23 23:27:44,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:44,206 INFO L435 NwaCegarLoop]: 670 mSDtfsCounter, 1700 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:44,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 3133 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-23 23:27:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 769. [2024-11-23 23:27:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 1.4713541666666667) internal successors, (1130), 768 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1130 transitions. [2024-11-23 23:27:44,234 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1130 transitions. Word has length 254 [2024-11-23 23:27:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:44,235 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 1130 transitions. [2024-11-23 23:27:44,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 7 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:44,235 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1130 transitions. [2024-11-23 23:27:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-23 23:27:44,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:44,240 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:44,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:27:44,241 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:44,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:44,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1729082565, now seen corresponding path program 1 times [2024-11-23 23:27:44,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:44,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717351922] [2024-11-23 23:27:44,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:44,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:46,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:46,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717351922] [2024-11-23 23:27:46,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717351922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:46,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:46,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:46,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673332389] [2024-11-23 23:27:46,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:46,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:46,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:46,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:46,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:46,285 INFO L87 Difference]: Start difference. First operand 769 states and 1130 transitions. Second operand has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:46,458 INFO L93 Difference]: Finished difference Result 1284 states and 1897 transitions. [2024-11-23 23:27:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:46,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 0 states have call successors, (0), 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 254 [2024-11-23 23:27:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:46,463 INFO L225 Difference]: With dead ends: 1284 [2024-11-23 23:27:46,463 INFO L226 Difference]: Without dead ends: 875 [2024-11-23 23:27:46,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:46,464 INFO L435 NwaCegarLoop]: 671 mSDtfsCounter, 1641 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:46,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 2012 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:46,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-11-23 23:27:46,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 800. [2024-11-23 23:27:46,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 1.4705882352941178) internal successors, (1175), 799 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1175 transitions. [2024-11-23 23:27:46,494 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1175 transitions. Word has length 254 [2024-11-23 23:27:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:46,495 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 1175 transitions. [2024-11-23 23:27:46,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:46,495 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1175 transitions. [2024-11-23 23:27:46,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-23 23:27:46,498 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:46,498 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:46,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:27:46,499 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:46,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:46,500 INFO L85 PathProgramCache]: Analyzing trace with hash 291520484, now seen corresponding path program 1 times [2024-11-23 23:27:46,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:46,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078125830] [2024-11-23 23:27:46,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:46,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:48,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:48,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078125830] [2024-11-23 23:27:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078125830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:48,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:48,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:27:48,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402869536] [2024-11-23 23:27:48,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:48,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:48,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:48,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:48,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:48,174 INFO L87 Difference]: Start difference. First operand 800 states and 1175 transitions. Second operand has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 7 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:48,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:48,369 INFO L93 Difference]: Finished difference Result 1288 states and 1902 transitions. [2024-11-23 23:27:48,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:27:48,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 7 states have internal predecessors, (255), 0 states have call successors, (0), 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 255 [2024-11-23 23:27:48,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:48,372 INFO L225 Difference]: With dead ends: 1288 [2024-11-23 23:27:48,372 INFO L226 Difference]: Without dead ends: 879 [2024-11-23 23:27:48,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:48,374 INFO L435 NwaCegarLoop]: 669 mSDtfsCounter, 1648 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:48,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 3340 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2024-11-23 23:27:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 803. [2024-11-23 23:27:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.4700748129675811) internal successors, (1179), 802 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:48,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1179 transitions. [2024-11-23 23:27:48,390 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1179 transitions. Word has length 255 [2024-11-23 23:27:48,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:48,391 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1179 transitions. [2024-11-23 23:27:48,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 7 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:48,391 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1179 transitions. [2024-11-23 23:27:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-23 23:27:48,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:48,393 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:48,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:27:48,394 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:48,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:48,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1562884428, now seen corresponding path program 1 times [2024-11-23 23:27:48,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:48,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546432301] [2024-11-23 23:27:48,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:48,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:50,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:50,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546432301] [2024-11-23 23:27:50,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546432301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:50,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:50,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:27:50,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328454635] [2024-11-23 23:27:50,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:50,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:50,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:50,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:50,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:50,268 INFO L87 Difference]: Start difference. First operand 803 states and 1179 transitions. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:50,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:50,498 INFO L93 Difference]: Finished difference Result 1294 states and 1910 transitions. [2024-11-23 23:27:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:27:50,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2024-11-23 23:27:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:50,503 INFO L225 Difference]: With dead ends: 1294 [2024-11-23 23:27:50,503 INFO L226 Difference]: Without dead ends: 885 [2024-11-23 23:27:50,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:50,505 INFO L435 NwaCegarLoop]: 670 mSDtfsCounter, 1658 mSDsluCounter, 2568 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:50,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 3238 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:50,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-23 23:27:50,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 809. [2024-11-23 23:27:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 1.4690594059405941) internal successors, (1187), 808 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:50,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1187 transitions. [2024-11-23 23:27:50,526 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1187 transitions. Word has length 256 [2024-11-23 23:27:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:50,527 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 1187 transitions. [2024-11-23 23:27:50,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1187 transitions. [2024-11-23 23:27:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-23 23:27:50,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:50,530 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:50,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:27:50,530 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:50,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:50,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2076340712, now seen corresponding path program 1 times [2024-11-23 23:27:50,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:50,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734298573] [2024-11-23 23:27:50,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:50,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:52,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:52,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734298573] [2024-11-23 23:27:52,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734298573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:52,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:52,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:52,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704205495] [2024-11-23 23:27:52,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:52,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:52,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:52,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:52,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:52,356 INFO L87 Difference]: Start difference. First operand 809 states and 1187 transitions. Second operand has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:52,474 INFO L93 Difference]: Finished difference Result 1288 states and 1900 transitions. [2024-11-23 23:27:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:52,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2024-11-23 23:27:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:52,478 INFO L225 Difference]: With dead ends: 1288 [2024-11-23 23:27:52,478 INFO L226 Difference]: Without dead ends: 879 [2024-11-23 23:27:52,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:52,480 INFO L435 NwaCegarLoop]: 671 mSDtfsCounter, 1619 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:52,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 2012 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2024-11-23 23:27:52,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 840. [2024-11-23 23:27:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 1.468414779499404) internal successors, (1232), 839 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:52,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1232 transitions. [2024-11-23 23:27:52,500 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1232 transitions. Word has length 256 [2024-11-23 23:27:52,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:52,501 INFO L471 AbstractCegarLoop]: Abstraction has 840 states and 1232 transitions. [2024-11-23 23:27:52,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.2) internal successors, (256), 5 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1232 transitions. [2024-11-23 23:27:52,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-23 23:27:52,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:52,504 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:52,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 23:27:52,504 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:52,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1979005952, now seen corresponding path program 1 times [2024-11-23 23:27:52,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:52,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196819449] [2024-11-23 23:27:52,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:52,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:54,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:54,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196819449] [2024-11-23 23:27:54,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196819449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:54,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:54,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:27:54,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762746897] [2024-11-23 23:27:54,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:54,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:54,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:54,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:54,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:54,279 INFO L87 Difference]: Start difference. First operand 840 states and 1232 transitions. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:54,561 INFO L93 Difference]: Finished difference Result 1292 states and 1905 transitions. [2024-11-23 23:27:54,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:27:54,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 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 257 [2024-11-23 23:27:54,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:54,566 INFO L225 Difference]: With dead ends: 1292 [2024-11-23 23:27:54,566 INFO L226 Difference]: Without dead ends: 883 [2024-11-23 23:27:54,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:54,572 INFO L435 NwaCegarLoop]: 669 mSDtfsCounter, 1626 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:54,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 3340 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:27:54,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-11-23 23:27:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 843. [2024-11-23 23:27:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 842 states have (on average 1.4679334916864608) internal successors, (1236), 842 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1236 transitions. [2024-11-23 23:27:54,605 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1236 transitions. Word has length 257 [2024-11-23 23:27:54,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:54,606 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1236 transitions. [2024-11-23 23:27:54,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1236 transitions. [2024-11-23 23:27:54,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-23 23:27:54,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:54,611 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:54,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 23:27:54,611 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:54,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:54,612 INFO L85 PathProgramCache]: Analyzing trace with hash -829423281, now seen corresponding path program 1 times [2024-11-23 23:27:54,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:54,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164163089] [2024-11-23 23:27:54,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:54,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:56,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:56,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164163089] [2024-11-23 23:27:56,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164163089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:56,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:56,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:27:56,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063752243] [2024-11-23 23:27:56,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:56,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:56,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:56,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:56,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:56,577 INFO L87 Difference]: Start difference. First operand 843 states and 1236 transitions. Second operand has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:56,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:56,829 INFO L93 Difference]: Finished difference Result 1298 states and 1913 transitions. [2024-11-23 23:27:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:27:56,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2024-11-23 23:27:56,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:56,833 INFO L225 Difference]: With dead ends: 1298 [2024-11-23 23:27:56,834 INFO L226 Difference]: Without dead ends: 889 [2024-11-23 23:27:56,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:56,836 INFO L435 NwaCegarLoop]: 670 mSDtfsCounter, 1635 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 3345 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:56,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 3345 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:27:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-23 23:27:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 849. [2024-11-23 23:27:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 1.4669811320754718) internal successors, (1244), 848 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1244 transitions. [2024-11-23 23:27:56,857 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1244 transitions. Word has length 258 [2024-11-23 23:27:56,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:56,857 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1244 transitions. [2024-11-23 23:27:56,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:27:56,857 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1244 transitions. [2024-11-23 23:27:56,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-23 23:27:56,860 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:56,860 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:56,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 23:27:56,861 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:56,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:56,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1000532203, now seen corresponding path program 1 times [2024-11-23 23:27:56,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:56,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268479502] [2024-11-23 23:27:56,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:56,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:27:58,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:58,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268479502] [2024-11-23 23:27:58,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268479502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:27:58,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410840386] [2024-11-23 23:27:58,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:58,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:27:58,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:27:58,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:27:58,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:28:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:00,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-23 23:28:00,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:28:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:01,018 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:28:01,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410840386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:01,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:28:01,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-23 23:28:01,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172842444] [2024-11-23 23:28:01,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:01,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:28:01,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:01,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:28:01,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:28:01,021 INFO L87 Difference]: Start difference. First operand 849 states and 1244 transitions. Second operand has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:01,865 INFO L93 Difference]: Finished difference Result 1649 states and 2419 transitions. [2024-11-23 23:28:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:28:01,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2024-11-23 23:28:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:01,868 INFO L225 Difference]: With dead ends: 1649 [2024-11-23 23:28:01,868 INFO L226 Difference]: Without dead ends: 890 [2024-11-23 23:28:01,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:28:01,870 INFO L435 NwaCegarLoop]: 581 mSDtfsCounter, 1815 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:01,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1815 Valid, 2902 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:28:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2024-11-23 23:28:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 852. [2024-11-23 23:28:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.4653349001175089) internal successors, (1247), 851 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1247 transitions. [2024-11-23 23:28:01,890 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1247 transitions. Word has length 258 [2024-11-23 23:28:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:01,890 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1247 transitions. [2024-11-23 23:28:01,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1247 transitions. [2024-11-23 23:28:01,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-23 23:28:01,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:01,893 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:28:01,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:28:02,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-23 23:28:02,094 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:02,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:02,095 INFO L85 PathProgramCache]: Analyzing trace with hash 128456742, now seen corresponding path program 1 times [2024-11-23 23:28:02,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:02,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457399658] [2024-11-23 23:28:02,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:02,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:04,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:04,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457399658] [2024-11-23 23:28:04,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457399658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:04,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:04,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:28:04,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030988621] [2024-11-23 23:28:04,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:04,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:28:04,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:04,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:28:04,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:28:04,237 INFO L87 Difference]: Start difference. First operand 852 states and 1247 transitions. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:04,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:04,394 INFO L93 Difference]: Finished difference Result 1536 states and 2251 transitions. [2024-11-23 23:28:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:28:04,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 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 259 [2024-11-23 23:28:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:04,397 INFO L225 Difference]: With dead ends: 1536 [2024-11-23 23:28:04,397 INFO L226 Difference]: Without dead ends: 886 [2024-11-23 23:28:04,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:28:04,398 INFO L435 NwaCegarLoop]: 672 mSDtfsCounter, 1734 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:04,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 2013 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:28:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-23 23:28:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 852. [2024-11-23 23:28:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.464159811985899) internal successors, (1246), 851 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1246 transitions. [2024-11-23 23:28:04,417 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1246 transitions. Word has length 259 [2024-11-23 23:28:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:04,417 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1246 transitions. [2024-11-23 23:28:04,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1246 transitions. [2024-11-23 23:28:04,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-23 23:28:04,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:04,420 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:28:04,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 23:28:04,421 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:04,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1247395191, now seen corresponding path program 1 times [2024-11-23 23:28:04,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:04,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51698127] [2024-11-23 23:28:04,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:04,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:06,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:06,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51698127] [2024-11-23 23:28:06,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51698127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:06,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:06,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:28:06,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982778695] [2024-11-23 23:28:06,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:06,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:28:06,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:06,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:28:06,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:28:06,212 INFO L87 Difference]: Start difference. First operand 852 states and 1246 transitions. Second operand has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:06,447 INFO L93 Difference]: Finished difference Result 1496 states and 2192 transitions. [2024-11-23 23:28:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:28:06,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2024-11-23 23:28:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:06,458 INFO L225 Difference]: With dead ends: 1496 [2024-11-23 23:28:06,458 INFO L226 Difference]: Without dead ends: 884 [2024-11-23 23:28:06,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:28:06,459 INFO L435 NwaCegarLoop]: 672 mSDtfsCounter, 1713 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:06,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 2681 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:28:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2024-11-23 23:28:06,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 850. [2024-11-23 23:28:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 1.464075382803298) internal successors, (1243), 849 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1243 transitions. [2024-11-23 23:28:06,496 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1243 transitions. Word has length 260 [2024-11-23 23:28:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:06,496 INFO L471 AbstractCegarLoop]: Abstraction has 850 states and 1243 transitions. [2024-11-23 23:28:06,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1243 transitions. [2024-11-23 23:28:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-23 23:28:06,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:06,502 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:28:06,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 23:28:06,504 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:06,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:06,505 INFO L85 PathProgramCache]: Analyzing trace with hash -93378797, now seen corresponding path program 1 times [2024-11-23 23:28:06,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:06,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025251277] [2024-11-23 23:28:06,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:10,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:10,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:10,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025251277] [2024-11-23 23:28:10,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025251277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:28:10,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065876055] [2024-11-23 23:28:10,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:10,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:28:10,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:28:10,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:28:10,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:28:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:11,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-23 23:28:11,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:28:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:13,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:28:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:15,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065876055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:28:15,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:28:15,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 11] total 33 [2024-11-23 23:28:15,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130216429] [2024-11-23 23:28:15,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:28:15,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-23 23:28:15,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:15,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-23 23:28:15,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 23:28:15,589 INFO L87 Difference]: Start difference. First operand 850 states and 1243 transitions. Second operand has 33 states, 33 states have (on average 23.21212121212121) internal successors, (766), 33 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:19,174 INFO L93 Difference]: Finished difference Result 4516 states and 6582 transitions. [2024-11-23 23:28:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-23 23:28:19,175 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 23.21212121212121) internal successors, (766), 33 states have internal predecessors, (766), 0 states have call successors, (0), 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 260 [2024-11-23 23:28:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:19,185 INFO L225 Difference]: With dead ends: 4516 [2024-11-23 23:28:19,185 INFO L226 Difference]: Without dead ends: 3737 [2024-11-23 23:28:19,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=762, Invalid=4068, Unknown=0, NotChecked=0, Total=4830 [2024-11-23 23:28:19,188 INFO L435 NwaCegarLoop]: 574 mSDtfsCounter, 34510 mSDsluCounter, 12715 mSDsCounter, 0 mSdLazyCounter, 2252 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34510 SdHoareTripleChecker+Valid, 13289 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:19,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34510 Valid, 13289 Invalid, 2269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2252 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 23:28:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2024-11-23 23:28:19,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 1618. [2024-11-23 23:28:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 1.463821892393321) internal successors, (2367), 1617 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2367 transitions. [2024-11-23 23:28:19,223 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2367 transitions. Word has length 260 [2024-11-23 23:28:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:19,223 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2367 transitions. [2024-11-23 23:28:19,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 23.21212121212121) internal successors, (766), 33 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:19,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2367 transitions. [2024-11-23 23:28:19,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-23 23:28:19,226 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:19,227 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:28:19,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:28:19,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-23 23:28:19,427 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:19,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1995524960, now seen corresponding path program 1 times [2024-11-23 23:28:19,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:19,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788630049] [2024-11-23 23:28:19,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:19,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:20,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788630049] [2024-11-23 23:28:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788630049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:20,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:20,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:28:20,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270967310] [2024-11-23 23:28:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:20,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:28:20,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:20,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:28:20,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:28:20,147 INFO L87 Difference]: Start difference. First operand 1618 states and 2367 transitions. Second operand has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:20,255 INFO L93 Difference]: Finished difference Result 2432 states and 3558 transitions. [2024-11-23 23:28:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:28:20,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2024-11-23 23:28:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:20,261 INFO L225 Difference]: With dead ends: 2432 [2024-11-23 23:28:20,261 INFO L226 Difference]: Without dead ends: 1651 [2024-11-23 23:28:20,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:28:20,263 INFO L435 NwaCegarLoop]: 677 mSDtfsCounter, 1741 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:20,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 2026 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:28:20,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2024-11-23 23:28:20,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1615. [2024-11-23 23:28:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 1.462825278810409) internal successors, (2361), 1614 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2361 transitions. [2024-11-23 23:28:20,299 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2361 transitions. Word has length 261 [2024-11-23 23:28:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:20,299 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 2361 transitions. [2024-11-23 23:28:20,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2361 transitions. [2024-11-23 23:28:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-23 23:28:20,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:20,304 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:28:20,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 23:28:20,304 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:20,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1650285959, now seen corresponding path program 1 times [2024-11-23 23:28:20,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:20,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675815336] [2024-11-23 23:28:20,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:20,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:20,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:20,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675815336] [2024-11-23 23:28:20,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675815336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:20,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:20,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:28:20,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577637074] [2024-11-23 23:28:20,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:20,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:28:20,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:20,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:28:20,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:28:20,953 INFO L87 Difference]: Start difference. First operand 1615 states and 2361 transitions. Second operand has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:21,060 INFO L93 Difference]: Finished difference Result 2038 states and 2990 transitions. [2024-11-23 23:28:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:28:21,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2024-11-23 23:28:21,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:21,065 INFO L225 Difference]: With dead ends: 2038 [2024-11-23 23:28:21,065 INFO L226 Difference]: Without dead ends: 1256 [2024-11-23 23:28:21,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:28:21,067 INFO L435 NwaCegarLoop]: 677 mSDtfsCounter, 1723 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:21,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 2025 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:28:21,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2024-11-23 23:28:21,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1242. [2024-11-23 23:28:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 1.4705882352941178) internal successors, (1825), 1241 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:21,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1825 transitions. [2024-11-23 23:28:21,088 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1825 transitions. Word has length 261 [2024-11-23 23:28:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:21,088 INFO L471 AbstractCegarLoop]: Abstraction has 1242 states and 1825 transitions. [2024-11-23 23:28:21,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:21,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1825 transitions. [2024-11-23 23:28:21,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-11-23 23:28:21,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:21,094 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:28:21,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 23:28:21,094 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:21,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash -731742344, now seen corresponding path program 1 times [2024-11-23 23:28:21,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:21,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114570176] [2024-11-23 23:28:21,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:21,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 173 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:28,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114570176] [2024-11-23 23:28:28,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114570176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:28:28,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257433323] [2024-11-23 23:28:28,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:28,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:28:28,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:28:28,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:28:28,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:28:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:30,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-23 23:28:30,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:28:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 107 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:34,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:28:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 101 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:41,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257433323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:28:41,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:28:41,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 17] total 36 [2024-11-23 23:28:41,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117790314] [2024-11-23 23:28:41,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:28:41,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-23 23:28:41,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:41,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-23 23:28:41,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2024-11-23 23:28:41,232 INFO L87 Difference]: Start difference. First operand 1242 states and 1825 transitions. Second operand has 36 states, 36 states have (on average 34.861111111111114) internal successors, (1255), 36 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:51,575 INFO L93 Difference]: Finished difference Result 17416 states and 25963 transitions. [2024-11-23 23:28:51,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-23 23:28:51,577 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 34.861111111111114) internal successors, (1255), 36 states have internal predecessors, (1255), 0 states have call successors, (0), 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 464 [2024-11-23 23:28:51,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:51,609 INFO L225 Difference]: With dead ends: 17416 [2024-11-23 23:28:51,610 INFO L226 Difference]: Without dead ends: 16334 [2024-11-23 23:28:51,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 912 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8027 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2914, Invalid=19736, Unknown=0, NotChecked=0, Total=22650 [2024-11-23 23:28:51,621 INFO L435 NwaCegarLoop]: 1609 mSDtfsCounter, 39985 mSDsluCounter, 26642 mSDsCounter, 0 mSdLazyCounter, 3584 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39985 SdHoareTripleChecker+Valid, 28251 SdHoareTripleChecker+Invalid, 3635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:51,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39985 Valid, 28251 Invalid, 3635 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 3584 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-23 23:28:51,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16334 states. [2024-11-23 23:28:51,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16334 to 6914. [2024-11-23 23:28:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6914 states, 6913 states have (on average 1.4847388977289164) internal successors, (10264), 6913 states have internal predecessors, (10264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6914 states to 6914 states and 10264 transitions. [2024-11-23 23:28:51,791 INFO L78 Accepts]: Start accepts. Automaton has 6914 states and 10264 transitions. Word has length 464 [2024-11-23 23:28:51,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:51,792 INFO L471 AbstractCegarLoop]: Abstraction has 6914 states and 10264 transitions. [2024-11-23 23:28:51,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 34.861111111111114) internal successors, (1255), 36 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:51,792 INFO L276 IsEmpty]: Start isEmpty. Operand 6914 states and 10264 transitions. [2024-11-23 23:28:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-23 23:28:51,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:51,806 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:28:51,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:28:52,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:28:52,007 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:52,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:52,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2014192669, now seen corresponding path program 1 times [2024-11-23 23:28:52,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:52,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131942741] [2024-11-23 23:28:52,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:52,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-23 23:28:55,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:55,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131942741] [2024-11-23 23:28:55,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131942741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:55,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:55,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:28:55,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143405710] [2024-11-23 23:28:55,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:55,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:28:55,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:55,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:28:55,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:28:55,324 INFO L87 Difference]: Start difference. First operand 6914 states and 10264 transitions. Second operand has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:28:55,513 INFO L93 Difference]: Finished difference Result 13765 states and 20441 transitions. [2024-11-23 23:28:55,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:28:55,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 466 [2024-11-23 23:28:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:28:55,527 INFO L225 Difference]: With dead ends: 13765 [2024-11-23 23:28:55,527 INFO L226 Difference]: Without dead ends: 6933 [2024-11-23 23:28:55,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:28:55,531 INFO L435 NwaCegarLoop]: 675 mSDtfsCounter, 1769 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:28:55,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 2688 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:28:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6933 states. [2024-11-23 23:28:55,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6933 to 6895. [2024-11-23 23:28:55,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6895 states, 6894 states have (on average 1.4843342036553524) internal successors, (10233), 6894 states have internal predecessors, (10233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6895 states to 6895 states and 10233 transitions. [2024-11-23 23:28:55,632 INFO L78 Accepts]: Start accepts. Automaton has 6895 states and 10233 transitions. Word has length 466 [2024-11-23 23:28:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:28:55,632 INFO L471 AbstractCegarLoop]: Abstraction has 6895 states and 10233 transitions. [2024-11-23 23:28:55,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:55,632 INFO L276 IsEmpty]: Start isEmpty. Operand 6895 states and 10233 transitions. [2024-11-23 23:28:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-23 23:28:55,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:28:55,641 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:28:55,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 23:28:55,642 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:28:55,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:55,642 INFO L85 PathProgramCache]: Analyzing trace with hash -17742208, now seen corresponding path program 1 times [2024-11-23 23:28:55,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:55,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361744839] [2024-11-23 23:28:55,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:55,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 125 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:02,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:02,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361744839] [2024-11-23 23:29:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361744839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275220340] [2024-11-23 23:29:02,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:02,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:02,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:29:02,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:29:02,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:29:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:03,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-23 23:29:03,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:29:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 47 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:07,182 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:29:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-23 23:29:07,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275220340] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:07,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:29:07,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 13] total 23 [2024-11-23 23:29:07,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610435642] [2024-11-23 23:29:07,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:07,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:29:07,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:07,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:29:07,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:29:07,823 INFO L87 Difference]: Start difference. First operand 6895 states and 10233 transitions. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:08,080 INFO L93 Difference]: Finished difference Result 14557 states and 21656 transitions. [2024-11-23 23:29:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:29:08,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 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 466 [2024-11-23 23:29:08,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:08,100 INFO L225 Difference]: With dead ends: 14557 [2024-11-23 23:29:08,100 INFO L226 Difference]: Without dead ends: 9271 [2024-11-23 23:29:08,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 917 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:29:08,109 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 400 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:08,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 3187 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:29:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9271 states. [2024-11-23 23:29:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9271 to 8031. [2024-11-23 23:29:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8031 states, 8030 states have (on average 1.4855541718555416) internal successors, (11929), 8030 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8031 states to 8031 states and 11929 transitions. [2024-11-23 23:29:08,251 INFO L78 Accepts]: Start accepts. Automaton has 8031 states and 11929 transitions. Word has length 466 [2024-11-23 23:29:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:08,252 INFO L471 AbstractCegarLoop]: Abstraction has 8031 states and 11929 transitions. [2024-11-23 23:29:08,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 8031 states and 11929 transitions. [2024-11-23 23:29:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-23 23:29:08,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:08,263 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:29:08,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:29:08,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-23 23:29:08,464 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:08,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1451370534, now seen corresponding path program 1 times [2024-11-23 23:29:08,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:08,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906465786] [2024-11-23 23:29:08,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:08,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 181 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:15,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:15,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906465786] [2024-11-23 23:29:15,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906465786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:15,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268283554] [2024-11-23 23:29:15,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:15,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:15,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:29:15,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:29:15,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:29:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:18,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-23 23:29:18,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:29:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 145 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:21,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:29:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 121 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:23,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268283554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:29:23,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:29:23,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17, 13] total 34 [2024-11-23 23:29:23,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897658834] [2024-11-23 23:29:23,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:29:23,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-23 23:29:23,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:23,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-23 23:29:23,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 23:29:23,502 INFO L87 Difference]: Start difference. First operand 8031 states and 11929 transitions. Second operand has 34 states, 34 states have (on average 32.6764705882353) internal successors, (1111), 34 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:29,422 INFO L93 Difference]: Finished difference Result 48812 states and 72797 transitions. [2024-11-23 23:29:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-23 23:29:29,423 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 32.6764705882353) internal successors, (1111), 34 states have internal predecessors, (1111), 0 states have call successors, (0), 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 467 [2024-11-23 23:29:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:29,489 INFO L225 Difference]: With dead ends: 48812 [2024-11-23 23:29:29,489 INFO L226 Difference]: Without dead ends: 38930 [2024-11-23 23:29:29,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1015 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1382, Invalid=7930, Unknown=0, NotChecked=0, Total=9312 [2024-11-23 23:29:29,511 INFO L435 NwaCegarLoop]: 1723 mSDtfsCounter, 26333 mSDsluCounter, 28161 mSDsCounter, 0 mSdLazyCounter, 4063 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26333 SdHoareTripleChecker+Valid, 29884 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 4063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:29,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26333 Valid, 29884 Invalid, 4086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 4063 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 23:29:29,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38930 states. [2024-11-23 23:29:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38930 to 20068. [2024-11-23 23:29:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20068 states, 20067 states have (on average 1.4841780036876464) internal successors, (29783), 20067 states have internal predecessors, (29783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20068 states to 20068 states and 29783 transitions. [2024-11-23 23:29:30,107 INFO L78 Accepts]: Start accepts. Automaton has 20068 states and 29783 transitions. Word has length 467 [2024-11-23 23:29:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:30,108 INFO L471 AbstractCegarLoop]: Abstraction has 20068 states and 29783 transitions. [2024-11-23 23:29:30,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 32.6764705882353) internal successors, (1111), 34 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:30,109 INFO L276 IsEmpty]: Start isEmpty. Operand 20068 states and 29783 transitions. [2024-11-23 23:29:30,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-23 23:29:30,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:30,129 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:29:30,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:29:30,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-23 23:29:30,330 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:30,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:30,332 INFO L85 PathProgramCache]: Analyzing trace with hash 142582398, now seen corresponding path program 1 times [2024-11-23 23:29:30,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:30,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770499306] [2024-11-23 23:29:30,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:30,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 126 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:37,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770499306] [2024-11-23 23:29:37,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770499306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:37,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931182624] [2024-11-23 23:29:37,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:37,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:37,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:29:37,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:29:37,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:29:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:39,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-23 23:29:39,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:29:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 48 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:43,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:29:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-23 23:29:43,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931182624] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:43,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:29:43,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 13] total 23 [2024-11-23 23:29:43,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081915815] [2024-11-23 23:29:43,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:43,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:29:43,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:43,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:29:43,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:29:43,345 INFO L87 Difference]: Start difference. First operand 20068 states and 29783 transitions. Second operand has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:43,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:43,571 INFO L93 Difference]: Finished difference Result 38174 states and 56768 transitions. [2024-11-23 23:29:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:29:43,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 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 468 [2024-11-23 23:29:43,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:43,595 INFO L225 Difference]: With dead ends: 38174 [2024-11-23 23:29:43,595 INFO L226 Difference]: Without dead ends: 22052 [2024-11-23 23:29:43,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 944 GetRequests, 921 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:29:43,612 INFO L435 NwaCegarLoop]: 786 mSDtfsCounter, 184 mSDsluCounter, 2227 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:43,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 3013 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:29:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22052 states. [2024-11-23 23:29:44,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22052 to 21444. [2024-11-23 23:29:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21444 states, 21443 states have (on average 1.4840740568017534) internal successors, (31823), 21443 states have internal predecessors, (31823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21444 states to 21444 states and 31823 transitions. [2024-11-23 23:29:44,120 INFO L78 Accepts]: Start accepts. Automaton has 21444 states and 31823 transitions. Word has length 468 [2024-11-23 23:29:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:44,121 INFO L471 AbstractCegarLoop]: Abstraction has 21444 states and 31823 transitions. [2024-11-23 23:29:44,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 21444 states and 31823 transitions. [2024-11-23 23:29:44,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-23 23:29:44,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:44,149 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:29:44,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:29:44,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-23 23:29:44,350 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:44,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1701941893, now seen corresponding path program 1 times [2024-11-23 23:29:44,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:44,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568359495] [2024-11-23 23:29:44,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:44,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 214 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:52,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:52,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568359495] [2024-11-23 23:29:52,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568359495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:52,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155383711] [2024-11-23 23:29:52,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:52,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:52,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:29:52,665 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:29:52,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:29:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:54,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-23 23:29:54,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:29:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 47 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:58,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:29:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-23 23:29:58,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155383711] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:58,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:29:58,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 14] total 23 [2024-11-23 23:29:58,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269824512] [2024-11-23 23:29:58,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:58,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:29:58,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:58,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:29:58,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:29:58,662 INFO L87 Difference]: Start difference. First operand 21444 states and 31823 transitions. Second operand has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:58,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:58,895 INFO L93 Difference]: Finished difference Result 42398 states and 63064 transitions. [2024-11-23 23:29:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:29:58,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 468 [2024-11-23 23:29:58,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:58,920 INFO L225 Difference]: With dead ends: 42398 [2024-11-23 23:29:58,920 INFO L226 Difference]: Without dead ends: 24900 [2024-11-23 23:29:58,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 924 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:29:58,935 INFO L435 NwaCegarLoop]: 680 mSDtfsCounter, 403 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:58,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 2022 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:29:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24900 states. [2024-11-23 23:29:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24900 to 20020. [2024-11-23 23:29:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20020 states, 20019 states have (on average 1.4829412058544382) internal successors, (29687), 20019 states have internal predecessors, (29687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20020 states to 20020 states and 29687 transitions. [2024-11-23 23:29:59,249 INFO L78 Accepts]: Start accepts. Automaton has 20020 states and 29687 transitions. Word has length 468 [2024-11-23 23:29:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:59,249 INFO L471 AbstractCegarLoop]: Abstraction has 20020 states and 29687 transitions. [2024-11-23 23:29:59,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 20020 states and 29687 transitions. [2024-11-23 23:29:59,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-23 23:29:59,267 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:59,267 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:29:59,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 23:29:59,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-23 23:29:59,468 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:59,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:59,469 INFO L85 PathProgramCache]: Analyzing trace with hash -94023123, now seen corresponding path program 1 times [2024-11-23 23:29:59,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:59,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021766586] [2024-11-23 23:29:59,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:59,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 127 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:05,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:05,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021766586] [2024-11-23 23:30:05,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021766586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:05,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710156039] [2024-11-23 23:30:05,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:05,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:05,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:05,398 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:05,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:30:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:07,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-23 23:30:07,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 49 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:12,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:30:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 46 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:16,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710156039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:30:16,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:30:16,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 15] total 32 [2024-11-23 23:30:16,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519329704] [2024-11-23 23:30:16,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:30:16,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 23:30:16,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:16,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 23:30:16,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:30:16,968 INFO L87 Difference]: Start difference. First operand 20020 states and 29687 transitions. Second operand has 32 states, 32 states have (on average 41.5) internal successors, (1328), 32 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:31,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:31,862 INFO L93 Difference]: Finished difference Result 202314 states and 301403 transitions. [2024-11-23 23:30:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2024-11-23 23:30:31,863 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 41.5) internal successors, (1328), 32 states have internal predecessors, (1328), 0 states have call successors, (0), 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 469 [2024-11-23 23:30:31,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:31,971 INFO L225 Difference]: With dead ends: 202314 [2024-11-23 23:30:31,971 INFO L226 Difference]: Without dead ends: 157200 [2024-11-23 23:30:32,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1144 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17104 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=4634, Invalid=40098, Unknown=0, NotChecked=0, Total=44732 [2024-11-23 23:30:32,020 INFO L435 NwaCegarLoop]: 2499 mSDtfsCounter, 24173 mSDsluCounter, 42404 mSDsCounter, 0 mSdLazyCounter, 6681 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24173 SdHoareTripleChecker+Valid, 44903 SdHoareTripleChecker+Invalid, 6698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 6681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:32,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24173 Valid, 44903 Invalid, 6698 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [17 Valid, 6681 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-23 23:30:32,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157200 states. [2024-11-23 23:30:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157200 to 40886. [2024-11-23 23:30:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40886 states, 40885 states have (on average 1.4845786963434022) internal successors, (60697), 40885 states have internal predecessors, (60697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:32,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40886 states to 40886 states and 60697 transitions. [2024-11-23 23:30:32,866 INFO L78 Accepts]: Start accepts. Automaton has 40886 states and 60697 transitions. Word has length 469 [2024-11-23 23:30:32,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:32,866 INFO L471 AbstractCegarLoop]: Abstraction has 40886 states and 60697 transitions. [2024-11-23 23:30:32,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 41.5) internal successors, (1328), 32 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:32,867 INFO L276 IsEmpty]: Start isEmpty. Operand 40886 states and 60697 transitions. [2024-11-23 23:30:32,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-11-23 23:30:32,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:32,883 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:30:32,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 23:30:33,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-23 23:30:33,084 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:33,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1213294177, now seen corresponding path program 1 times [2024-11-23 23:30:33,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:33,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670979269] [2024-11-23 23:30:33,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:33,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 165 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:35,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:35,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670979269] [2024-11-23 23:30:35,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670979269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:35,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351267266] [2024-11-23 23:30:35,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:35,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:35,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:35,766 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:35,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:30:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:37,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 3076 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-23 23:30:37,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 164 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:41,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:30:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 52 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:46,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351267266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:30:46,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:30:46,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 17] total 35 [2024-11-23 23:30:46,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224432214] [2024-11-23 23:30:46,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:30:46,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-23 23:30:46,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:46,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-23 23:30:46,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 23:30:46,543 INFO L87 Difference]: Start difference. First operand 40886 states and 60697 transitions. Second operand has 35 states, 35 states have (on average 34.82857142857143) internal successors, (1219), 35 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:13,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:13,302 INFO L93 Difference]: Finished difference Result 414306 states and 616983 transitions. [2024-11-23 23:31:13,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2024-11-23 23:31:13,303 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 34.82857142857143) internal successors, (1219), 35 states have internal predecessors, (1219), 0 states have call successors, (0), 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 471 [2024-11-23 23:31:13,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:13,634 INFO L225 Difference]: With dead ends: 414306 [2024-11-23 23:31:13,634 INFO L226 Difference]: Without dead ends: 357994 [2024-11-23 23:31:13,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 925 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14527 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=4008, Invalid=36998, Unknown=0, NotChecked=0, Total=41006 [2024-11-23 23:31:13,716 INFO L435 NwaCegarLoop]: 8055 mSDtfsCounter, 9693 mSDsluCounter, 136555 mSDsCounter, 0 mSdLazyCounter, 14000 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9693 SdHoareTripleChecker+Valid, 144610 SdHoareTripleChecker+Invalid, 14015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 14000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:13,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9693 Valid, 144610 Invalid, 14015 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [15 Valid, 14000 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2024-11-23 23:31:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357994 states. [2024-11-23 23:31:17,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357994 to 118346. [2024-11-23 23:31:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118346 states, 118345 states have (on average 1.4856985930964552) internal successors, (175825), 118345 states have internal predecessors, (175825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118346 states to 118346 states and 175825 transitions. [2024-11-23 23:31:17,409 INFO L78 Accepts]: Start accepts. Automaton has 118346 states and 175825 transitions. Word has length 471 [2024-11-23 23:31:17,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:17,410 INFO L471 AbstractCegarLoop]: Abstraction has 118346 states and 175825 transitions. [2024-11-23 23:31:17,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 34.82857142857143) internal successors, (1219), 35 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:17,410 INFO L276 IsEmpty]: Start isEmpty. Operand 118346 states and 175825 transitions. [2024-11-23 23:31:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-11-23 23:31:17,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:17,512 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:31:17,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:31:17,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:31:17,713 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:17,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1626480627, now seen corresponding path program 1 times [2024-11-23 23:31:17,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:17,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649499046] [2024-11-23 23:31:17,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:17,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 199 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:26,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:26,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649499046] [2024-11-23 23:31:26,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649499046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:31:26,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729492499] [2024-11-23 23:31:26,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:26,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:31:26,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:31:26,235 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:31:26,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:31:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:28,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-23 23:31:28,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:31:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 37 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:34,659 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:31:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 46 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:31:39,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729492499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:31:39,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:31:39,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17, 15] total 36 [2024-11-23 23:31:39,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670849175] [2024-11-23 23:31:39,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:31:39,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-23 23:31:39,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:39,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-23 23:31:39,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2024-11-23 23:31:39,343 INFO L87 Difference]: Start difference. First operand 118346 states and 175825 transitions. Second operand has 36 states, 36 states have (on average 37.05555555555556) internal successors, (1334), 36 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:55,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:55,580 INFO L93 Difference]: Finished difference Result 452042 states and 672349 transitions. [2024-11-23 23:31:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2024-11-23 23:31:55,581 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 37.05555555555556) internal successors, (1334), 36 states have internal predecessors, (1334), 0 states have call successors, (0), 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 471 [2024-11-23 23:31:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:56,412 INFO L225 Difference]: With dead ends: 452042 [2024-11-23 23:31:56,413 INFO L226 Difference]: Without dead ends: 310580 [2024-11-23 23:31:56,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1118 GetRequests, 929 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13434 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=3335, Invalid=32955, Unknown=0, NotChecked=0, Total=36290 [2024-11-23 23:31:56,468 INFO L435 NwaCegarLoop]: 1778 mSDtfsCounter, 24147 mSDsluCounter, 40532 mSDsCounter, 0 mSdLazyCounter, 6420 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24147 SdHoareTripleChecker+Valid, 42310 SdHoareTripleChecker+Invalid, 6443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:56,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24147 Valid, 42310 Invalid, 6443 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 6420 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-23 23:31:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310580 states. [2024-11-23 23:31:58,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310580 to 133025. [2024-11-23 23:31:58,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133025 states, 133024 states have (on average 1.4842810319942266) internal successors, (197445), 133024 states have internal predecessors, (197445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133025 states to 133025 states and 197445 transitions. [2024-11-23 23:31:59,410 INFO L78 Accepts]: Start accepts. Automaton has 133025 states and 197445 transitions. Word has length 471 [2024-11-23 23:31:59,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:59,411 INFO L471 AbstractCegarLoop]: Abstraction has 133025 states and 197445 transitions. [2024-11-23 23:31:59,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 37.05555555555556) internal successors, (1334), 36 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:31:59,411 INFO L276 IsEmpty]: Start isEmpty. Operand 133025 states and 197445 transitions. [2024-11-23 23:31:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-11-23 23:31:59,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:59,458 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:31:59,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:31:59,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-23 23:31:59,659 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:59,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash 547638472, now seen corresponding path program 1 times [2024-11-23 23:31:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:59,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271683470] [2024-11-23 23:31:59,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:59,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:32:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 187 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:07,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:32:07,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271683470] [2024-11-23 23:32:07,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271683470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:32:07,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025435278] [2024-11-23 23:32:07,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:07,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:32:07,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:32:07,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:32:07,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:32:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:10,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-23 23:32:10,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:32:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 167 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:11,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:32:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 167 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:12,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025435278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:32:12,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:32:12,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 9] total 24 [2024-11-23 23:32:12,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265286808] [2024-11-23 23:32:12,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:32:12,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 23:32:12,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:32:12,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 23:32:12,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:32:12,308 INFO L87 Difference]: Start difference. First operand 133025 states and 197445 transitions. Second operand has 24 states, 24 states have (on average 45.375) internal successors, (1089), 24 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:32:23,516 INFO L93 Difference]: Finished difference Result 811817 states and 1207045 transitions. [2024-11-23 23:32:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-23 23:32:23,517 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 45.375) internal successors, (1089), 24 states have internal predecessors, (1089), 0 states have call successors, (0), 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 472 [2024-11-23 23:32:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:32:24,771 INFO L225 Difference]: With dead ends: 811817 [2024-11-23 23:32:24,771 INFO L226 Difference]: Without dead ends: 692226 [2024-11-23 23:32:25,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8798 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2505, Invalid=21057, Unknown=0, NotChecked=0, Total=23562 [2024-11-23 23:32:25,106 INFO L435 NwaCegarLoop]: 1595 mSDtfsCounter, 46149 mSDsluCounter, 24389 mSDsCounter, 0 mSdLazyCounter, 3913 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46149 SdHoareTripleChecker+Valid, 25984 SdHoareTripleChecker+Invalid, 3933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:32:25,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46149 Valid, 25984 Invalid, 3933 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 3913 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 23:32:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692226 states. [2024-11-23 23:32:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692226 to 359960. [2024-11-23 23:32:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359960 states, 359959 states have (on average 1.4817715350914966) internal successors, (533377), 359959 states have internal predecessors, (533377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359960 states to 359960 states and 533377 transitions. [2024-11-23 23:32:33,259 INFO L78 Accepts]: Start accepts. Automaton has 359960 states and 533377 transitions. Word has length 472 [2024-11-23 23:32:33,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:32:33,259 INFO L471 AbstractCegarLoop]: Abstraction has 359960 states and 533377 transitions. [2024-11-23 23:32:33,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 45.375) internal successors, (1089), 24 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 359960 states and 533377 transitions. [2024-11-23 23:32:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-11-23 23:32:34,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:32:34,210 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:32:34,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 23:32:34,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-23 23:32:34,411 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:32:34,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:32:34,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1749829220, now seen corresponding path program 1 times [2024-11-23 23:32:34,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:32:34,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317414227] [2024-11-23 23:32:34,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:34,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:32:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 67 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:42,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:32:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317414227] [2024-11-23 23:32:42,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317414227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:32:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652636034] [2024-11-23 23:32:42,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:42,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:32:42,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:32:42,668 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:32:42,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:32:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:45,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 3075 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-23 23:32:45,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:32:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 49 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:47,343 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:32:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 49 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:32:50,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652636034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:32:50,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:32:50,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2024-11-23 23:32:50,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451632465] [2024-11-23 23:32:50,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:32:50,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 23:32:50,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:32:50,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 23:32:50,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:32:50,216 INFO L87 Difference]: Start difference. First operand 359960 states and 533377 transitions. Second operand has 25 states, 25 states have (on average 52.24) internal successors, (1306), 25 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:32:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:32:58,628 INFO L93 Difference]: Finished difference Result 1123946 states and 1667536 transitions. [2024-11-23 23:32:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-23 23:32:58,629 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 52.24) internal successors, (1306), 25 states have internal predecessors, (1306), 0 states have call successors, (0), 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 472 [2024-11-23 23:32:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:32:59,466 INFO L225 Difference]: With dead ends: 1123946 [2024-11-23 23:32:59,466 INFO L226 Difference]: Without dead ends: 775974 [2024-11-23 23:32:59,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 931 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1637 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1183, Invalid=5137, Unknown=0, NotChecked=0, Total=6320 [2024-11-23 23:32:59,642 INFO L435 NwaCegarLoop]: 2133 mSDtfsCounter, 8198 mSDsluCounter, 25138 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8198 SdHoareTripleChecker+Valid, 27271 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:32:59,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8198 Valid, 27271 Invalid, 3034 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-23 23:33:00,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775974 states. [2024-11-23 23:33:07,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775974 to 439682. [2024-11-23 23:33:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439682 states, 439681 states have (on average 1.4794748920239902) internal successors, (650497), 439681 states have internal predecessors, (650497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439682 states to 439682 states and 650497 transitions. [2024-11-23 23:33:08,492 INFO L78 Accepts]: Start accepts. Automaton has 439682 states and 650497 transitions. Word has length 472 [2024-11-23 23:33:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:08,493 INFO L471 AbstractCegarLoop]: Abstraction has 439682 states and 650497 transitions. [2024-11-23 23:33:08,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 52.24) internal successors, (1306), 25 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:33:08,494 INFO L276 IsEmpty]: Start isEmpty. Operand 439682 states and 650497 transitions. [2024-11-23 23:33:09,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-23 23:33:09,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:09,789 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 23:33:09,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-23 23:33:09,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d8a9ef8-9d8b-417e-a763-7a540118d6df/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-23 23:33:09,989 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:09,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:09,990 INFO L85 PathProgramCache]: Analyzing trace with hash -635462109, now seen corresponding path program 1 times [2024-11-23 23:33:09,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:09,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001727546] [2024-11-23 23:33:09,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:09,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms