./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/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_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/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 32bit --witnessprinter.graph.data.programhash f34e139d311e566fb184ea47633b96986afa15e7a6ae2ebeede6340c715d2189 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:15:17,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:15:17,544 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:15:17,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:15:17,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:15:17,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:15:17,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:15:17,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:15:17,585 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:15:17,585 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:15:17,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:15:17,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:15:17,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:15:17,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:15:17,586 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:15:17,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:15:17,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:15:17,586 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:15:17,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:15:17,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:15:17,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:15:17,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:15:17,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:15:17,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:15:17,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:15:17,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:15:17,589 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:15:17,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:15:17,589 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:15:17,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:15:17,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:15:17,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:15:17,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:15:17,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:15:17,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:15:17,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:15:17,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:15:17,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:15:17,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:15:17,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:15:17,590 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:15:17,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:15:17,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:15:17,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:15:17,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:15:17,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:15:17,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:15:17,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:15:17,591 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_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f34e139d311e566fb184ea47633b96986afa15e7a6ae2ebeede6340c715d2189 [2024-11-23 23:15:17,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:15:17,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:15:17,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:15:17,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:15:17,903 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:15:17,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2024-11-23 23:15:20,900 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/data/c0f05bc50/91c57ac1c44244509f7f8d49916e1860/FLAGea2ec11ec [2024-11-23 23:15:21,524 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:15:21,524 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2024-11-23 23:15:21,564 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/data/c0f05bc50/91c57ac1c44244509f7f8d49916e1860/FLAGea2ec11ec [2024-11-23 23:15:21,591 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/data/c0f05bc50/91c57ac1c44244509f7f8d49916e1860 [2024-11-23 23:15:21,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:15:21,596 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:15:21,597 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:15:21,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:15:21,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:15:21,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:15:21" (1/1) ... [2024-11-23 23:15:21,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7c6679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:21, skipping insertion in model container [2024-11-23 23:15:21,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:15:21" (1/1) ... [2024-11-23 23:15:21,770 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:15:22,086 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_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[8653,8666] [2024-11-23 23:15:22,147 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_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[14208,14221] [2024-11-23 23:15:23,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:15:23,026 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:15:23,076 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_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[8653,8666] [2024-11-23 23:15:23,093 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_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[14208,14221] [2024-11-23 23:15:23,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:15:23,658 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:15:23,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23 WrapperNode [2024-11-23 23:15:23,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:15:23,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:15:23,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:15:23,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:15:23,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:23,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:24,425 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5038 [2024-11-23 23:15:24,426 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:15:24,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:15:24,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:15:24,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:15:24,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:24,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:24,543 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:24,867 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 23:15:24,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:24,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:25,148 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:25,167 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:25,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:25,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:25,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:25,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:15:25,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:15:25,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:15:25,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:15:25,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (1/1) ... [2024-11-23 23:15:25,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:15:25,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:15:25,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:15:25,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:15:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:15:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:15:25,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:15:25,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:15:25,663 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:15:25,665 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:15:32,430 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2024-11-23 23:15:32,431 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:15:32,463 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:15:32,464 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 23:15:32,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:15:32 BoogieIcfgContainer [2024-11-23 23:15:32,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:15:32,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:15:32,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:15:32,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:15:32,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:15:21" (1/3) ... [2024-11-23 23:15:32,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21844e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:15:32, skipping insertion in model container [2024-11-23 23:15:32,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:23" (2/3) ... [2024-11-23 23:15:32,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21844e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:15:32, skipping insertion in model container [2024-11-23 23:15:32,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:15:32" (3/3) ... [2024-11-23 23:15:32,488 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2024-11-23 23:15:32,510 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:15:32,515 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c that has 1 procedures, 886 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-23 23:15:32,632 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:15:32,651 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;@ee8b79e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:15:32,651 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 23:15:32,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states 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 23:15:32,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-23 23:15:32,671 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:32,672 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] [2024-11-23 23:15:32,672 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:32,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1782369673, now seen corresponding path program 1 times [2024-11-23 23:15:32,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:32,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009107583] [2024-11-23 23:15:32,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:32,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:32,976 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 23:15:32,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:32,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009107583] [2024-11-23 23:15:32,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009107583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:32,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:32,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:15:32,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229211879] [2024-11-23 23:15:32,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:32,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:15:32,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:33,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:15:33,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:15:33,015 INFO L87 Difference]: Start difference. First operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 23:15:33,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:33,132 INFO L93 Difference]: Finished difference Result 1743 states and 3310 transitions. [2024-11-23 23:15:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:15:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-23 23:15:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:33,159 INFO L225 Difference]: With dead ends: 1743 [2024-11-23 23:15:33,160 INFO L226 Difference]: Without dead ends: 820 [2024-11-23 23:15:33,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:15:33,170 INFO L435 NwaCegarLoop]: 1616 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:33,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:33,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-11-23 23:15:33,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2024-11-23 23:15:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8936430317848412) internal successors, (1549), 819 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states 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 23:15:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1549 transitions. [2024-11-23 23:15:33,283 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1549 transitions. Word has length 23 [2024-11-23 23:15:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:33,284 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1549 transitions. [2024-11-23 23:15:33,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 23:15:33,284 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1549 transitions. [2024-11-23 23:15:33,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-23 23:15:33,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:33,285 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] [2024-11-23 23:15:33,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:15:33,286 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:33,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:33,286 INFO L85 PathProgramCache]: Analyzing trace with hash 194021771, now seen corresponding path program 1 times [2024-11-23 23:15:33,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:33,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454337098] [2024-11-23 23:15:33,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:33,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:33,668 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 23:15:33,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:33,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454337098] [2024-11-23 23:15:33,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454337098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:33,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:33,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:15:33,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774037324] [2024-11-23 23:15:33,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:33,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:33,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:33,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:33,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:33,671 INFO L87 Difference]: Start difference. First operand 820 states and 1549 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 23:15:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:33,860 INFO L93 Difference]: Finished difference Result 898 states and 1669 transitions. [2024-11-23 23:15:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:15:33,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-23 23:15:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:33,868 INFO L225 Difference]: With dead ends: 898 [2024-11-23 23:15:33,870 INFO L226 Difference]: Without dead ends: 857 [2024-11-23 23:15:33,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:33,872 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 57 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6151 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:33,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6151 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:15:33,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-23 23:15:33,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 820. [2024-11-23 23:15:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8655256723716382) internal successors, (1526), 819 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states 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 23:15:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1526 transitions. [2024-11-23 23:15:33,924 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1526 transitions. Word has length 23 [2024-11-23 23:15:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:33,924 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1526 transitions. [2024-11-23 23:15:33,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 23:15:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1526 transitions. [2024-11-23 23:15:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-23 23:15:33,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:33,929 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:33,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:15:33,929 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:33,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:33,934 INFO L85 PathProgramCache]: Analyzing trace with hash 651515760, now seen corresponding path program 1 times [2024-11-23 23:15:33,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:33,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158265340] [2024-11-23 23:15:33,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:33,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:34,288 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 23:15:34,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:34,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158265340] [2024-11-23 23:15:34,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158265340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:34,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:34,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:15:34,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239029774] [2024-11-23 23:15:34,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:34,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:15:34,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:34,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:15:34,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:15:34,291 INFO L87 Difference]: Start difference. First operand 820 states and 1526 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:34,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:34,588 INFO L93 Difference]: Finished difference Result 1116 states and 1990 transitions. [2024-11-23 23:15:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:15:34,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-23 23:15:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:34,595 INFO L225 Difference]: With dead ends: 1116 [2024-11-23 23:15:34,595 INFO L226 Difference]: Without dead ends: 1079 [2024-11-23 23:15:34,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:15:34,597 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 6223 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6223 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:34,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6223 Valid, 2326 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:15:34,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-23 23:15:34,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 855. [2024-11-23 23:15:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 853 states have (on average 1.8534583821805393) internal successors, (1581), 854 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states 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 23:15:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1581 transitions. [2024-11-23 23:15:34,646 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1581 transitions. Word has length 45 [2024-11-23 23:15:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:34,646 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1581 transitions. [2024-11-23 23:15:34,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1581 transitions. [2024-11-23 23:15:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-23 23:15:34,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:34,652 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:34,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:15:34,652 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:34,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:34,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1920688320, now seen corresponding path program 1 times [2024-11-23 23:15:34,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:34,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862073201] [2024-11-23 23:15:34,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:34,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:34,806 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 23:15:34,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:34,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862073201] [2024-11-23 23:15:34,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862073201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:34,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:34,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:34,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188694469] [2024-11-23 23:15:34,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:34,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:34,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:34,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:34,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:34,810 INFO L87 Difference]: Start difference. First operand 855 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:34,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:34,865 INFO L93 Difference]: Finished difference Result 988 states and 1788 transitions. [2024-11-23 23:15:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:34,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-23 23:15:34,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:34,871 INFO L225 Difference]: With dead ends: 988 [2024-11-23 23:15:34,872 INFO L226 Difference]: Without dead ends: 916 [2024-11-23 23:15:34,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:34,876 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:34,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:34,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-23 23:15:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-23 23:15:34,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.832236842105263) internal successors, (1671), 913 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states 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 23:15:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1671 transitions. [2024-11-23 23:15:34,921 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1671 transitions. Word has length 47 [2024-11-23 23:15:34,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:34,921 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1671 transitions. [2024-11-23 23:15:34,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:34,922 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1671 transitions. [2024-11-23 23:15:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-23 23:15:34,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:34,925 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:34,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:15:34,925 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:34,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:34,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1987181832, now seen corresponding path program 1 times [2024-11-23 23:15:34,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:34,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369307075] [2024-11-23 23:15:34,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:34,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:35,388 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 23:15:35,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:35,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369307075] [2024-11-23 23:15:35,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369307075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:35,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:35,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:15:35,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337804102] [2024-11-23 23:15:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:35,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:15:35,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:35,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:15:35,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:15:35,391 INFO L87 Difference]: Start difference. First operand 914 states and 1671 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:35,614 INFO L93 Difference]: Finished difference Result 1047 states and 1875 transitions. [2024-11-23 23:15:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:15:35,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-23 23:15:35,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:35,622 INFO L225 Difference]: With dead ends: 1047 [2024-11-23 23:15:35,622 INFO L226 Difference]: Without dead ends: 916 [2024-11-23 23:15:35,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:15:35,625 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 5924 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:35,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 1682 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:15:35,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-23 23:15:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-23 23:15:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.8300438596491229) internal successors, (1669), 913 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states 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 23:15:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1669 transitions. [2024-11-23 23:15:35,711 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1669 transitions. Word has length 47 [2024-11-23 23:15:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:35,712 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1669 transitions. [2024-11-23 23:15:35,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1669 transitions. [2024-11-23 23:15:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-23 23:15:35,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:35,713 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:35,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:15:35,714 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:35,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1058371496, now seen corresponding path program 1 times [2024-11-23 23:15:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:35,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654525832] [2024-11-23 23:15:35,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:35,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:36,040 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 23:15:36,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:36,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654525832] [2024-11-23 23:15:36,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654525832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:36,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:36,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:15:36,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839074516] [2024-11-23 23:15:36,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:36,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:36,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:36,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:36,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:36,042 INFO L87 Difference]: Start difference. First operand 914 states and 1669 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:15:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:36,106 INFO L93 Difference]: Finished difference Result 922 states and 1678 transitions. [2024-11-23 23:15:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:15:36,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-23 23:15:36,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:36,115 INFO L225 Difference]: With dead ends: 922 [2024-11-23 23:15:36,115 INFO L226 Difference]: Without dead ends: 920 [2024-11-23 23:15:36,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:36,116 INFO L435 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6083 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:36,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6083 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-23 23:15:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2024-11-23 23:15:36,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 918 states have (on average 1.8235294117647058) internal successors, (1674), 919 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states 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 23:15:36,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1674 transitions. [2024-11-23 23:15:36,151 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1674 transitions. Word has length 48 [2024-11-23 23:15:36,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:36,152 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1674 transitions. [2024-11-23 23:15:36,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:15:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1674 transitions. [2024-11-23 23:15:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-23 23:15:36,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:36,153 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:36,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:15:36,153 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:36,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash 470915509, now seen corresponding path program 1 times [2024-11-23 23:15:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:36,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852000455] [2024-11-23 23:15:36,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:36,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:36,277 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 23:15:36,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:36,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852000455] [2024-11-23 23:15:36,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852000455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:36,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:36,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:15:36,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990833558] [2024-11-23 23:15:36,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:36,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:36,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:36,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:36,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:36,279 INFO L87 Difference]: Start difference. First operand 920 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:15:41,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:41,166 INFO L93 Difference]: Finished difference Result 2424 states and 4547 transitions. [2024-11-23 23:15:41,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:41,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-23 23:15:41,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:41,176 INFO L225 Difference]: With dead ends: 2424 [2024-11-23 23:15:41,176 INFO L226 Difference]: Without dead ends: 1671 [2024-11-23 23:15:41,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:41,179 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 854 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:41,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 164 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-23 23:15:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2024-11-23 23:15:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1671. [2024-11-23 23:15:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1669 states have (on average 1.8268424206111444) internal successors, (3049), 1670 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states 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 23:15:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 3049 transitions. [2024-11-23 23:15:41,228 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 3049 transitions. Word has length 48 [2024-11-23 23:15:41,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:41,228 INFO L471 AbstractCegarLoop]: Abstraction has 1671 states and 3049 transitions. [2024-11-23 23:15:41,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 23:15:41,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 3049 transitions. [2024-11-23 23:15:41,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-23 23:15:41,230 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:41,230 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:41,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:15:41,230 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:41,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:41,231 INFO L85 PathProgramCache]: Analyzing trace with hash -912919064, now seen corresponding path program 1 times [2024-11-23 23:15:41,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:41,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622887479] [2024-11-23 23:15:41,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:41,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:41,328 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 23:15:41,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:41,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622887479] [2024-11-23 23:15:41,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622887479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:41,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:41,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:41,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928729690] [2024-11-23 23:15:41,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:41,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:41,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:41,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:41,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:41,330 INFO L87 Difference]: Start difference. First operand 1671 states and 3049 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:15:41,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:41,361 INFO L93 Difference]: Finished difference Result 1822 states and 3275 transitions. [2024-11-23 23:15:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:41,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-23 23:15:41,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:41,370 INFO L225 Difference]: With dead ends: 1822 [2024-11-23 23:15:41,370 INFO L226 Difference]: Without dead ends: 1744 [2024-11-23 23:15:41,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:41,372 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1486 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:41,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:41,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2024-11-23 23:15:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1742. [2024-11-23 23:15:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1740 states have (on average 1.8120689655172413) internal successors, (3153), 1741 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states 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 23:15:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 3153 transitions. [2024-11-23 23:15:41,469 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 3153 transitions. Word has length 49 [2024-11-23 23:15:41,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:41,470 INFO L471 AbstractCegarLoop]: Abstraction has 1742 states and 3153 transitions. [2024-11-23 23:15:41,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:15:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 3153 transitions. [2024-11-23 23:15:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-23 23:15:41,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:41,471 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:41,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:15:41,471 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:41,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:41,471 INFO L85 PathProgramCache]: Analyzing trace with hash 325342952, now seen corresponding path program 1 times [2024-11-23 23:15:41,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:41,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62975452] [2024-11-23 23:15:41,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:41,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:41,560 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 23:15:41,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:41,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62975452] [2024-11-23 23:15:41,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62975452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:41,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:41,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:41,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819929058] [2024-11-23 23:15:41,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:41,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:41,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:41,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:41,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:41,562 INFO L87 Difference]: Start difference. First operand 1742 states and 3153 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:15:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:41,592 INFO L93 Difference]: Finished difference Result 2128 states and 3725 transitions. [2024-11-23 23:15:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:41,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-23 23:15:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:41,601 INFO L225 Difference]: With dead ends: 2128 [2024-11-23 23:15:41,601 INFO L226 Difference]: Without dead ends: 1923 [2024-11-23 23:15:41,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:41,603 INFO L435 NwaCegarLoop]: 1570 mSDtfsCounter, 1484 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:41,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2024-11-23 23:15:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1921. [2024-11-23 23:15:41,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1919 states have (on average 1.7774882751433039) internal successors, (3411), 1920 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states 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 23:15:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3411 transitions. [2024-11-23 23:15:41,653 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3411 transitions. Word has length 49 [2024-11-23 23:15:41,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:41,653 INFO L471 AbstractCegarLoop]: Abstraction has 1921 states and 3411 transitions. [2024-11-23 23:15:41,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:15:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3411 transitions. [2024-11-23 23:15:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-23 23:15:41,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:41,654 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:41,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:15:41,655 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:41,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:41,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1890125848, now seen corresponding path program 1 times [2024-11-23 23:15:41,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:41,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746372940] [2024-11-23 23:15:41,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:41,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:41,738 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 23:15:41,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:41,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746372940] [2024-11-23 23:15:41,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746372940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:41,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:41,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489072305] [2024-11-23 23:15:41,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:41,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:41,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:41,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:41,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:41,739 INFO L87 Difference]: Start difference. First operand 1921 states and 3411 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:15:41,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:41,779 INFO L93 Difference]: Finished difference Result 2641 states and 4457 transitions. [2024-11-23 23:15:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:41,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-23 23:15:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:41,788 INFO L225 Difference]: With dead ends: 2641 [2024-11-23 23:15:41,788 INFO L226 Difference]: Without dead ends: 2257 [2024-11-23 23:15:41,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:41,791 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1482 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:41,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1635 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-11-23 23:15:41,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2255. [2024-11-23 23:15:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2253 states have (on average 1.7217043941411452) internal successors, (3879), 2254 states have internal predecessors, (3879), 0 states have call successors, (0), 0 states 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 23:15:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3879 transitions. [2024-11-23 23:15:41,850 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3879 transitions. Word has length 49 [2024-11-23 23:15:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:41,850 INFO L471 AbstractCegarLoop]: Abstraction has 2255 states and 3879 transitions. [2024-11-23 23:15:41,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:15:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3879 transitions. [2024-11-23 23:15:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-23 23:15:41,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:41,851 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:41,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:15:41,851 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:41,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:41,852 INFO L85 PathProgramCache]: Analyzing trace with hash -109192984, now seen corresponding path program 1 times [2024-11-23 23:15:41,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:41,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092855833] [2024-11-23 23:15:41,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:41,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:41,917 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 23:15:41,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:41,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092855833] [2024-11-23 23:15:41,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092855833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:41,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:41,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:41,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934926711] [2024-11-23 23:15:41,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:41,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:41,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:41,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:41,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:41,919 INFO L87 Difference]: Start difference. First operand 2255 states and 3879 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:15:41,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:41,965 INFO L93 Difference]: Finished difference Result 3595 states and 5777 transitions. [2024-11-23 23:15:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:41,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-11-23 23:15:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:41,976 INFO L225 Difference]: With dead ends: 3595 [2024-11-23 23:15:41,976 INFO L226 Difference]: Without dead ends: 2877 [2024-11-23 23:15:41,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:41,979 INFO L435 NwaCegarLoop]: 1566 mSDtfsCounter, 1480 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:41,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1637 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:41,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2024-11-23 23:15:42,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2875. [2024-11-23 23:15:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2873 states have (on average 1.6425339366515836) internal successors, (4719), 2874 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states 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 23:15:42,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4719 transitions. [2024-11-23 23:15:42,062 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4719 transitions. Word has length 49 [2024-11-23 23:15:42,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:42,062 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 4719 transitions. [2024-11-23 23:15:42,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:15:42,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4719 transitions. [2024-11-23 23:15:42,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:15:42,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:42,065 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:42,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:15:42,066 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:42,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:42,066 INFO L85 PathProgramCache]: Analyzing trace with hash -280922677, now seen corresponding path program 1 times [2024-11-23 23:15:42,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:42,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648045633] [2024-11-23 23:15:42,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:42,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:15:42,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648045633] [2024-11-23 23:15:42,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648045633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:42,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:42,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:15:42,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268203047] [2024-11-23 23:15:42,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:42,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:15:42,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:42,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:15:42,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:15:42,268 INFO L87 Difference]: Start difference. First operand 2875 states and 4719 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 23:15:42,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:42,506 INFO L93 Difference]: Finished difference Result 8149 states and 12092 transitions. [2024-11-23 23:15:42,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:15:42,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 67 [2024-11-23 23:15:42,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:42,539 INFO L225 Difference]: With dead ends: 8149 [2024-11-23 23:15:42,543 INFO L226 Difference]: Without dead ends: 7187 [2024-11-23 23:15:42,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:15:42,547 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 4652 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:42,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3381 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:15:42,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2024-11-23 23:15:42,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 4027. [2024-11-23 23:15:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 4025 states have (on average 1.5679503105590062) internal successors, (6311), 4026 states have internal predecessors, (6311), 0 states have call successors, (0), 0 states 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 23:15:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 6311 transitions. [2024-11-23 23:15:42,707 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 6311 transitions. Word has length 67 [2024-11-23 23:15:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:42,707 INFO L471 AbstractCegarLoop]: Abstraction has 4027 states and 6311 transitions. [2024-11-23 23:15:42,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 23:15:42,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 6311 transitions. [2024-11-23 23:15:42,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:15:42,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:42,711 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:42,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:15:42,712 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:42,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:42,712 INFO L85 PathProgramCache]: Analyzing trace with hash 957339339, now seen corresponding path program 1 times [2024-11-23 23:15:42,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:42,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291039045] [2024-11-23 23:15:42,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:42,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:15:42,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:42,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291039045] [2024-11-23 23:15:42,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291039045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:42,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:42,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:15:42,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051197981] [2024-11-23 23:15:42,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:42,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:15:42,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:42,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:15:42,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:15:42,883 INFO L87 Difference]: Start difference. First operand 4027 states and 6311 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 23:15:43,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:43,141 INFO L93 Difference]: Finished difference Result 9485 states and 13948 transitions. [2024-11-23 23:15:43,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:15:43,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 67 [2024-11-23 23:15:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:43,241 INFO L225 Difference]: With dead ends: 9485 [2024-11-23 23:15:43,241 INFO L226 Difference]: Without dead ends: 8147 [2024-11-23 23:15:43,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:15:43,245 INFO L435 NwaCegarLoop]: 1578 mSDtfsCounter, 4654 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 3358 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:43,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4654 Valid, 3358 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:15:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8147 states. [2024-11-23 23:15:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8147 to 5843. [2024-11-23 23:15:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5843 states, 5841 states have (on average 1.5091593905153227) internal successors, (8815), 5842 states have internal predecessors, (8815), 0 states have call successors, (0), 0 states 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 23:15:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 8815 transitions. [2024-11-23 23:15:43,474 INFO L78 Accepts]: Start accepts. Automaton has 5843 states and 8815 transitions. Word has length 67 [2024-11-23 23:15:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:43,474 INFO L471 AbstractCegarLoop]: Abstraction has 5843 states and 8815 transitions. [2024-11-23 23:15:43,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 23:15:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5843 states and 8815 transitions. [2024-11-23 23:15:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:15:43,476 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:43,476 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:43,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:15:43,477 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:43,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1258129461, now seen corresponding path program 1 times [2024-11-23 23:15:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:43,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143438946] [2024-11-23 23:15:43,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:43,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 23:15:43,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:43,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143438946] [2024-11-23 23:15:43,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143438946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:43,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:43,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:15:43,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155909149] [2024-11-23 23:15:43,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:43,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:15:43,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:43,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:15:43,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:15:43,653 INFO L87 Difference]: Start difference. First operand 5843 states and 8815 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 23:15:43,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:43,928 INFO L93 Difference]: Finished difference Result 10821 states and 15796 transitions. [2024-11-23 23:15:43,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:15:43,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 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 67 [2024-11-23 23:15:43,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:43,952 INFO L225 Difference]: With dead ends: 10821 [2024-11-23 23:15:43,953 INFO L226 Difference]: Without dead ends: 9483 [2024-11-23 23:15:43,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:15:43,958 INFO L435 NwaCegarLoop]: 1576 mSDtfsCounter, 4677 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:43,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3343 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:15:43,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9483 states. [2024-11-23 23:15:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9483 to 7179. [2024-11-23 23:15:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7179 states, 7177 states have (on average 1.4857182666852444) internal successors, (10663), 7178 states have internal predecessors, (10663), 0 states have call successors, (0), 0 states 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 23:15:44,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 10663 transitions. [2024-11-23 23:15:44,221 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 10663 transitions. Word has length 67 [2024-11-23 23:15:44,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:44,222 INFO L471 AbstractCegarLoop]: Abstraction has 7179 states and 10663 transitions. [2024-11-23 23:15:44,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 23:15:44,222 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 10663 transitions. [2024-11-23 23:15:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:15:44,224 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:44,225 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:44,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:15:44,226 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:44,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 522803403, now seen corresponding path program 1 times [2024-11-23 23:15:44,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:44,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384539102] [2024-11-23 23:15:44,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:44,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 23:15:44,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:44,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384539102] [2024-11-23 23:15:44,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384539102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:44,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:44,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:15:44,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498298925] [2024-11-23 23:15:44,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:44,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:15:44,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:44,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:15:44,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:15:44,403 INFO L87 Difference]: Start difference. First operand 7179 states and 10663 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:44,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:44,800 INFO L93 Difference]: Finished difference Result 12157 states and 17644 transitions. [2024-11-23 23:15:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:15:44,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-23 23:15:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:44,860 INFO L225 Difference]: With dead ends: 12157 [2024-11-23 23:15:44,860 INFO L226 Difference]: Without dead ends: 10819 [2024-11-23 23:15:44,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:15:44,868 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 4666 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:44,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4666 Valid, 3368 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:15:44,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2024-11-23 23:15:45,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 8515. [2024-11-23 23:15:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4696346763773054) internal successors, (12511), 8514 states have internal predecessors, (12511), 0 states have call successors, (0), 0 states 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 23:15:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 12511 transitions. [2024-11-23 23:15:45,172 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 12511 transitions. Word has length 67 [2024-11-23 23:15:45,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:45,172 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 12511 transitions. [2024-11-23 23:15:45,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 12511 transitions. [2024-11-23 23:15:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-23 23:15:45,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:45,175 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:45,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:15:45,175 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:45,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1681723190, now seen corresponding path program 1 times [2024-11-23 23:15:45,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:45,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868940629] [2024-11-23 23:15:45,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:45,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:45,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:45,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868940629] [2024-11-23 23:15:45,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868940629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:45,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:45,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:45,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121740587] [2024-11-23 23:15:45,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:45,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:45,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:45,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:45,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:45,294 INFO L87 Difference]: Start difference. First operand 8515 states and 12511 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:45,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:45,450 INFO L93 Difference]: Finished difference Result 15495 states and 22177 transitions. [2024-11-23 23:15:45,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:45,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-23 23:15:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:45,469 INFO L225 Difference]: With dead ends: 15495 [2024-11-23 23:15:45,469 INFO L226 Difference]: Without dead ends: 8517 [2024-11-23 23:15:45,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:45,478 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:45,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3067 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:45,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2024-11-23 23:15:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 8515. [2024-11-23 23:15:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4550687184306355) internal successors, (12387), 8514 states have internal predecessors, (12387), 0 states have call successors, (0), 0 states 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 23:15:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 12387 transitions. [2024-11-23 23:15:45,708 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 12387 transitions. Word has length 68 [2024-11-23 23:15:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:45,708 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 12387 transitions. [2024-11-23 23:15:45,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 12387 transitions. [2024-11-23 23:15:45,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-23 23:15:45,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:45,710 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:45,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:15:45,711 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:45,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:45,711 INFO L85 PathProgramCache]: Analyzing trace with hash -469102173, now seen corresponding path program 1 times [2024-11-23 23:15:45,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:45,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226061843] [2024-11-23 23:15:45,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:45,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:45,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:45,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226061843] [2024-11-23 23:15:45,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226061843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:45,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:45,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:45,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72129873] [2024-11-23 23:15:45,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:45,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:45,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:45,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:45,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:45,900 INFO L87 Difference]: Start difference. First operand 8515 states and 12387 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 23:15:45,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:45,982 INFO L93 Difference]: Finished difference Result 11177 states and 16060 transitions. [2024-11-23 23:15:45,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:45,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-11-23 23:15:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:45,993 INFO L225 Difference]: With dead ends: 11177 [2024-11-23 23:15:45,993 INFO L226 Difference]: Without dead ends: 4199 [2024-11-23 23:15:45,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:46,000 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:46,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2024-11-23 23:15:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4190. [2024-11-23 23:15:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4188 states have (on average 1.5439350525310411) internal successors, (6466), 4189 states have internal predecessors, (6466), 0 states have call successors, (0), 0 states 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 23:15:46,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6466 transitions. [2024-11-23 23:15:46,095 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6466 transitions. Word has length 69 [2024-11-23 23:15:46,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:46,095 INFO L471 AbstractCegarLoop]: Abstraction has 4190 states and 6466 transitions. [2024-11-23 23:15:46,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 23:15:46,096 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6466 transitions. [2024-11-23 23:15:46,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-23 23:15:46,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:46,097 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:46,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:15:46,098 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:46,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:46,099 INFO L85 PathProgramCache]: Analyzing trace with hash 422947784, now seen corresponding path program 1 times [2024-11-23 23:15:46,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:46,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53761454] [2024-11-23 23:15:46,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:46,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:46,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:46,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53761454] [2024-11-23 23:15:46,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53761454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:46,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:46,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206781407] [2024-11-23 23:15:46,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:46,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:46,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:46,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:46,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:46,240 INFO L87 Difference]: Start difference. First operand 4190 states and 6466 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:15:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:46,293 INFO L93 Difference]: Finished difference Result 5514 states and 8272 transitions. [2024-11-23 23:15:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:46,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-23 23:15:46,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:46,301 INFO L225 Difference]: With dead ends: 5514 [2024-11-23 23:15:46,301 INFO L226 Difference]: Without dead ends: 2872 [2024-11-23 23:15:46,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:46,304 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 33 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:46,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2024-11-23 23:15:46,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2870. [2024-11-23 23:15:46,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2868 states have (on average 1.6178521617852162) internal successors, (4640), 2869 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states 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 23:15:46,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4640 transitions. [2024-11-23 23:15:46,368 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4640 transitions. Word has length 70 [2024-11-23 23:15:46,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:46,368 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 4640 transitions. [2024-11-23 23:15:46,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:15:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4640 transitions. [2024-11-23 23:15:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-23 23:15:46,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:46,370 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:46,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:15:46,371 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:46,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:46,372 INFO L85 PathProgramCache]: Analyzing trace with hash 975382234, now seen corresponding path program 1 times [2024-11-23 23:15:46,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:46,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723075258] [2024-11-23 23:15:46,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:46,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:46,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:46,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723075258] [2024-11-23 23:15:46,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723075258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:46,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:46,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:46,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541451726] [2024-11-23 23:15:46,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:46,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:46,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:46,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:46,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:46,495 INFO L87 Difference]: Start difference. First operand 2870 states and 4640 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 23:15:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:46,535 INFO L93 Difference]: Finished difference Result 3534 states and 5533 transitions. [2024-11-23 23:15:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:46,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2024-11-23 23:15:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:46,541 INFO L225 Difference]: With dead ends: 3534 [2024-11-23 23:15:46,542 INFO L226 Difference]: Without dead ends: 2212 [2024-11-23 23:15:46,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:46,544 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 30 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:46,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2024-11-23 23:15:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2210. [2024-11-23 23:15:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2208 states have (on average 1.6929347826086956) internal successors, (3738), 2209 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states 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 23:15:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3738 transitions. [2024-11-23 23:15:46,587 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3738 transitions. Word has length 72 [2024-11-23 23:15:46,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:46,588 INFO L471 AbstractCegarLoop]: Abstraction has 2210 states and 3738 transitions. [2024-11-23 23:15:46,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 23:15:46,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3738 transitions. [2024-11-23 23:15:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-23 23:15:46,589 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:46,589 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:46,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:15:46,590 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:46,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:46,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1652203628, now seen corresponding path program 1 times [2024-11-23 23:15:46,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:46,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039290114] [2024-11-23 23:15:46,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:46,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:48,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:48,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039290114] [2024-11-23 23:15:48,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039290114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:15:48,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309602141] [2024-11-23 23:15:48,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:48,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:15:48,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:15:49,003 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:15:49,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:15:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:49,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 23:15:49,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:15:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:49,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:15:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:50,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309602141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:15:50,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:15:50,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-23 23:15:50,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266803339] [2024-11-23 23:15:50,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:15:50,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:15:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:50,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:15:50,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:15:50,311 INFO L87 Difference]: Start difference. First operand 2210 states and 3738 transitions. Second operand has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 23:15:57,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:57,399 INFO L93 Difference]: Finished difference Result 7458 states and 10573 transitions. [2024-11-23 23:15:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-23 23:15:57,399 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 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 74 [2024-11-23 23:15:57,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:57,414 INFO L225 Difference]: With dead ends: 7458 [2024-11-23 23:15:57,414 INFO L226 Difference]: Without dead ends: 6730 [2024-11-23 23:15:57,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3661 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1650, Invalid=8450, Unknown=0, NotChecked=0, Total=10100 [2024-11-23 23:15:57,419 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 18363 mSDsluCounter, 6411 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18363 SdHoareTripleChecker+Valid, 7916 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:57,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18363 Valid, 7916 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:15:57,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6730 states. [2024-11-23 23:15:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6730 to 6143. [2024-11-23 23:15:57,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6143 states, 6141 states have (on average 1.426803452206481) internal successors, (8762), 6142 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states 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 23:15:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6143 states to 6143 states and 8762 transitions. [2024-11-23 23:15:57,602 INFO L78 Accepts]: Start accepts. Automaton has 6143 states and 8762 transitions. Word has length 74 [2024-11-23 23:15:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:57,602 INFO L471 AbstractCegarLoop]: Abstraction has 6143 states and 8762 transitions. [2024-11-23 23:15:57,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 23:15:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6143 states and 8762 transitions. [2024-11-23 23:15:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-23 23:15:57,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:57,604 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:57,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:15:57,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:15:57,808 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:57,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:57,809 INFO L85 PathProgramCache]: Analyzing trace with hash 619603757, now seen corresponding path program 1 times [2024-11-23 23:15:57,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:57,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530078909] [2024-11-23 23:15:57,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:57,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:59,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:59,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530078909] [2024-11-23 23:15:59,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530078909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:15:59,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155290333] [2024-11-23 23:15:59,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:59,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:15:59,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:15:59,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:15:59,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:15:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:59,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:15:59,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:16:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:00,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:16:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:01,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155290333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:16:01,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:16:01,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-11-23 23:16:01,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889971497] [2024-11-23 23:16:01,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:16:01,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-23 23:16:01,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:16:01,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-23 23:16:01,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2024-11-23 23:16:01,193 INFO L87 Difference]: Start difference. First operand 6143 states and 8762 transitions. Second operand has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 28 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 23:16:03,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:16:03,976 INFO L93 Difference]: Finished difference Result 24391 states and 32369 transitions. [2024-11-23 23:16:03,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-23 23:16:03,977 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 28 states have internal predecessors, (197), 0 states have call successors, (0), 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 75 [2024-11-23 23:16:03,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:16:04,010 INFO L225 Difference]: With dead ends: 24391 [2024-11-23 23:16:04,010 INFO L226 Difference]: Without dead ends: 20131 [2024-11-23 23:16:04,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=957, Invalid=3735, Unknown=0, NotChecked=0, Total=4692 [2024-11-23 23:16:04,021 INFO L435 NwaCegarLoop]: 1496 mSDtfsCounter, 18831 mSDsluCounter, 6473 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18831 SdHoareTripleChecker+Valid, 7969 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:16:04,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18831 Valid, 7969 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:16:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20131 states. [2024-11-23 23:16:04,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20131 to 19891. [2024-11-23 23:16:04,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19891 states, 19889 states have (on average 1.3032329428327216) internal successors, (25920), 19890 states have internal predecessors, (25920), 0 states have call successors, (0), 0 states 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 23:16:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19891 states to 19891 states and 25920 transitions. [2024-11-23 23:16:04,934 INFO L78 Accepts]: Start accepts. Automaton has 19891 states and 25920 transitions. Word has length 75 [2024-11-23 23:16:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:16:04,935 INFO L471 AbstractCegarLoop]: Abstraction has 19891 states and 25920 transitions. [2024-11-23 23:16:04,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 28 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 23:16:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 19891 states and 25920 transitions. [2024-11-23 23:16:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-23 23:16:04,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:16:04,938 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:04,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:16:05,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 23:16:05,143 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:16:05,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:16:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2128735329, now seen corresponding path program 1 times [2024-11-23 23:16:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:16:05,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659272834] [2024-11-23 23:16:05,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:05,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:16:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:05,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:16:05,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659272834] [2024-11-23 23:16:05,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659272834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:16:05,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412335851] [2024-11-23 23:16:05,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:05,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:16:05,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:16:05,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:16:05,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:16:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:05,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 23:16:05,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:16:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:06,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:16:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:07,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412335851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:16:07,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:16:07,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 31 [2024-11-23 23:16:07,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666058232] [2024-11-23 23:16:07,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:16:07,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-23 23:16:07,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:16:07,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-23 23:16:07,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2024-11-23 23:16:07,739 INFO L87 Difference]: Start difference. First operand 19891 states and 25920 transitions. Second operand has 31 states, 31 states have (on average 6.612903225806452) internal successors, (205), 31 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 23:16:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:16:10,794 INFO L93 Difference]: Finished difference Result 38211 states and 49259 transitions. [2024-11-23 23:16:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-23 23:16:10,794 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.612903225806452) internal successors, (205), 31 states have internal predecessors, (205), 0 states have call successors, (0), 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 75 [2024-11-23 23:16:10,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:16:10,825 INFO L225 Difference]: With dead ends: 38211 [2024-11-23 23:16:10,825 INFO L226 Difference]: Without dead ends: 23993 [2024-11-23 23:16:10,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=739, Invalid=3043, Unknown=0, NotChecked=0, Total=3782 [2024-11-23 23:16:10,838 INFO L435 NwaCegarLoop]: 1511 mSDtfsCounter, 16855 mSDsluCounter, 6601 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16855 SdHoareTripleChecker+Valid, 8112 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:16:10,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16855 Valid, 8112 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:16:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23993 states. [2024-11-23 23:16:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23993 to 13456. [2024-11-23 23:16:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13456 states, 13454 states have (on average 1.3177493682176304) internal successors, (17729), 13455 states have internal predecessors, (17729), 0 states have call successors, (0), 0 states 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 23:16:11,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13456 states to 13456 states and 17729 transitions. [2024-11-23 23:16:11,431 INFO L78 Accepts]: Start accepts. Automaton has 13456 states and 17729 transitions. Word has length 75 [2024-11-23 23:16:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:16:11,432 INFO L471 AbstractCegarLoop]: Abstraction has 13456 states and 17729 transitions. [2024-11-23 23:16:11,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.612903225806452) internal successors, (205), 31 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 23:16:11,432 INFO L276 IsEmpty]: Start isEmpty. Operand 13456 states and 17729 transitions. [2024-11-23 23:16:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-23 23:16:11,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:16:11,434 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:11,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 23:16:11,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-23 23:16:11,639 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:16:11,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:16:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash 337145422, now seen corresponding path program 1 times [2024-11-23 23:16:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:16:11,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617207295] [2024-11-23 23:16:11,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:11,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:16:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:12,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:16:12,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617207295] [2024-11-23 23:16:12,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617207295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:16:12,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201567223] [2024-11-23 23:16:12,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:12,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:16:12,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:16:12,023 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:16:12,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:16:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:12,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 23:16:12,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:16:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:12,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:16:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201567223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:16:13,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:16:13,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-23 23:16:13,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488512572] [2024-11-23 23:16:13,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:16:13,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 23:16:13,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:16:13,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 23:16:13,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:16:13,762 INFO L87 Difference]: Start difference. First operand 13456 states and 17729 transitions. Second operand has 23 states, 23 states have (on average 7.260869565217392) internal successors, (167), 22 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 23:16:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:16:14,592 INFO L93 Difference]: Finished difference Result 27254 states and 35074 transitions. [2024-11-23 23:16:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:16:14,592 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.260869565217392) internal successors, (167), 22 states have internal predecessors, (167), 0 states have call successors, (0), 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 76 [2024-11-23 23:16:14,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:16:14,611 INFO L225 Difference]: With dead ends: 27254 [2024-11-23 23:16:14,612 INFO L226 Difference]: Without dead ends: 16245 [2024-11-23 23:16:14,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:16:14,624 INFO L435 NwaCegarLoop]: 1501 mSDtfsCounter, 16496 mSDsluCounter, 6245 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16496 SdHoareTripleChecker+Valid, 7746 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:16:14,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16496 Valid, 7746 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:16:14,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16245 states. [2024-11-23 23:16:15,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16245 to 16241. [2024-11-23 23:16:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16241 states, 16239 states have (on average 1.305499107087875) internal successors, (21200), 16240 states have internal predecessors, (21200), 0 states have call successors, (0), 0 states 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 23:16:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16241 states to 16241 states and 21200 transitions. [2024-11-23 23:16:15,464 INFO L78 Accepts]: Start accepts. Automaton has 16241 states and 21200 transitions. Word has length 76 [2024-11-23 23:16:15,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:16:15,464 INFO L471 AbstractCegarLoop]: Abstraction has 16241 states and 21200 transitions. [2024-11-23 23:16:15,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.260869565217392) internal successors, (167), 22 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 23:16:15,465 INFO L276 IsEmpty]: Start isEmpty. Operand 16241 states and 21200 transitions. [2024-11-23 23:16:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-23 23:16:15,467 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:16:15,467 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:15,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:16:15,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 23:16:15,671 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:16:15,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:16:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash -830754321, now seen corresponding path program 1 times [2024-11-23 23:16:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:16:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047292641] [2024-11-23 23:16:15,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:15,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:16:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:17,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:16:17,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047292641] [2024-11-23 23:16:17,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047292641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:16:17,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873514139] [2024-11-23 23:16:17,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:17,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:16:17,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:16:17,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:16:17,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:16:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:17,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-23 23:16:17,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:16:23,804 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:23,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:16:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:31,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873514139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:16:31,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:16:31,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29, 26] total 68 [2024-11-23 23:16:31,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68385325] [2024-11-23 23:16:31,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:16:31,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-23 23:16:31,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:16:31,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-23 23:16:31,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=3850, Unknown=0, NotChecked=0, Total=4556 [2024-11-23 23:16:31,209 INFO L87 Difference]: Start difference. First operand 16241 states and 21200 transitions. Second operand has 68 states, 68 states have (on average 3.1029411764705883) internal successors, (211), 68 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 23:18:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:18:58,855 INFO L93 Difference]: Finished difference Result 65135 states and 82254 transitions. [2024-11-23 23:18:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2024-11-23 23:18:58,855 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.1029411764705883) internal successors, (211), 68 states have internal predecessors, (211), 0 states have call successors, (0), 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 77 [2024-11-23 23:18:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:18:58,911 INFO L225 Difference]: With dead ends: 65135 [2024-11-23 23:18:58,911 INFO L226 Difference]: Without dead ends: 55958 [2024-11-23 23:18:58,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47724 ImplicationChecksByTransitivity, 139.3s TimeCoverageRelationStatistics Valid=19316, Invalid=93244, Unknown=0, NotChecked=0, Total=112560 [2024-11-23 23:18:58,937 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 25655 mSDsluCounter, 27553 mSDsCounter, 0 mSdLazyCounter, 7611 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25655 SdHoareTripleChecker+Valid, 29090 SdHoareTripleChecker+Invalid, 7843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 7611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:18:58,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25655 Valid, 29090 Invalid, 7843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [232 Valid, 7611 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2024-11-23 23:18:58,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55958 states. [2024-11-23 23:19:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55958 to 28332. [2024-11-23 23:19:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28332 states, 28330 states have (on average 1.281150723614543) internal successors, (36295), 28331 states have internal predecessors, (36295), 0 states have call successors, (0), 0 states 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 23:19:00,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28332 states to 28332 states and 36295 transitions. [2024-11-23 23:19:00,738 INFO L78 Accepts]: Start accepts. Automaton has 28332 states and 36295 transitions. Word has length 77 [2024-11-23 23:19:00,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:00,739 INFO L471 AbstractCegarLoop]: Abstraction has 28332 states and 36295 transitions. [2024-11-23 23:19:00,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.1029411764705883) internal successors, (211), 68 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 23:19:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 28332 states and 36295 transitions. [2024-11-23 23:19:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-23 23:19:00,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:00,741 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:19:00,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:19:00,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:19:00,942 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:00,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:00,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1134507608, now seen corresponding path program 1 times [2024-11-23 23:19:00,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:00,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113884444] [2024-11-23 23:19:00,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:00,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:19:02,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:02,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113884444] [2024-11-23 23:19:02,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113884444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:19:02,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988977936] [2024-11-23 23:19:02,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:02,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:19:02,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:19:02,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:19:02,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:19:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:02,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-23 23:19:02,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:19:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:19:09,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:19:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:19:18,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988977936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:19:18,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:19:18,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 31, 24] total 63 [2024-11-23 23:19:18,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912636632] [2024-11-23 23:19:18,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:19:18,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-23 23:19:18,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:18,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-23 23:19:18,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=3338, Unknown=0, NotChecked=0, Total=3906 [2024-11-23 23:19:18,206 INFO L87 Difference]: Start difference. First operand 28332 states and 36295 transitions. Second operand has 63 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 63 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:19:31,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:31,761 INFO L93 Difference]: Finished difference Result 39499 states and 50403 transitions. [2024-11-23 23:19:31,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-23 23:19:31,761 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 63 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-23 23:19:31,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:31,784 INFO L225 Difference]: With dead ends: 39499 [2024-11-23 23:19:31,784 INFO L226 Difference]: Without dead ends: 23735 [2024-11-23 23:19:31,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=2142, Invalid=9630, Unknown=0, NotChecked=0, Total=11772 [2024-11-23 23:19:31,794 INFO L435 NwaCegarLoop]: 1483 mSDtfsCounter, 15881 mSDsluCounter, 29817 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15881 SdHoareTripleChecker+Valid, 31300 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:31,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15881 Valid, 31300 Invalid, 1714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 23:19:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23735 states. [2024-11-23 23:19:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23735 to 19166. [2024-11-23 23:19:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19166 states, 19164 states have (on average 1.30030265080359) internal successors, (24919), 19165 states have internal predecessors, (24919), 0 states have call successors, (0), 0 states 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 23:19:32,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19166 states to 19166 states and 24919 transitions. [2024-11-23 23:19:32,707 INFO L78 Accepts]: Start accepts. Automaton has 19166 states and 24919 transitions. Word has length 78 [2024-11-23 23:19:32,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:32,707 INFO L471 AbstractCegarLoop]: Abstraction has 19166 states and 24919 transitions. [2024-11-23 23:19:32,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 63 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:19:32,707 INFO L276 IsEmpty]: Start isEmpty. Operand 19166 states and 24919 transitions. [2024-11-23 23:19:32,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-23 23:19:32,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:32,709 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:32,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 23:19:32,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-23 23:19:32,909 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:32,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:32,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1080487678, now seen corresponding path program 1 times [2024-11-23 23:19:32,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:32,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472450953] [2024-11-23 23:19:32,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:32,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:19:33,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:33,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472450953] [2024-11-23 23:19:33,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472450953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:19:33,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401326304] [2024-11-23 23:19:33,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:33,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:19:33,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:19:33,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:19:33,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:19:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:34,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 23:19:34,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:19:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:19:35,194 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:19:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:19:36,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401326304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:19:36,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:19:36,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2024-11-23 23:19:36,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776445615] [2024-11-23 23:19:36,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:19:36,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 23:19:36,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:36,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 23:19:36,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:19:36,336 INFO L87 Difference]: Start difference. First operand 19166 states and 24919 transitions. Second operand has 32 states, 32 states have (on average 5.9375) internal successors, (190), 32 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 23:19:40,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:40,647 INFO L93 Difference]: Finished difference Result 63069 states and 79864 transitions. [2024-11-23 23:19:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 23:19:40,647 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.9375) internal successors, (190), 32 states have internal predecessors, (190), 0 states have call successors, (0), 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 78 [2024-11-23 23:19:40,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:40,692 INFO L225 Difference]: With dead ends: 63069 [2024-11-23 23:19:40,692 INFO L226 Difference]: Without dead ends: 55839 [2024-11-23 23:19:40,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=484, Invalid=2168, Unknown=0, NotChecked=0, Total=2652 [2024-11-23 23:19:40,702 INFO L435 NwaCegarLoop]: 1497 mSDtfsCounter, 11772 mSDsluCounter, 15249 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11772 SdHoareTripleChecker+Valid, 16746 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:40,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11772 Valid, 16746 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:19:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55839 states. [2024-11-23 23:19:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55839 to 17987. [2024-11-23 23:19:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17987 states, 17985 states have (on average 1.3013066444259105) internal successors, (23404), 17986 states have internal predecessors, (23404), 0 states have call successors, (0), 0 states 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 23:19:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17987 states to 17987 states and 23404 transitions. [2024-11-23 23:19:41,880 INFO L78 Accepts]: Start accepts. Automaton has 17987 states and 23404 transitions. Word has length 78 [2024-11-23 23:19:41,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:41,880 INFO L471 AbstractCegarLoop]: Abstraction has 17987 states and 23404 transitions. [2024-11-23 23:19:41,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.9375) internal successors, (190), 32 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 23:19:41,881 INFO L276 IsEmpty]: Start isEmpty. Operand 17987 states and 23404 transitions. [2024-11-23 23:19:41,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-23 23:19:41,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:41,882 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:19:41,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 23:19:42,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-23 23:19:42,086 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:42,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1204034687, now seen corresponding path program 1 times [2024-11-23 23:19:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:42,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144779761] [2024-11-23 23:19:42,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:19:43,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:43,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144779761] [2024-11-23 23:19:43,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144779761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:19:43,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748169061] [2024-11-23 23:19:43,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:43,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:19:43,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:19:43,118 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:19:43,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:19:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:43,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 23:19:43,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:19:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:19:45,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:19:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:19:48,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748169061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:19:48,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:19:48,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 19] total 47 [2024-11-23 23:19:48,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751884303] [2024-11-23 23:19:48,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:19:48,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-23 23:19:48,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:48,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-23 23:19:48,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1897, Unknown=0, NotChecked=0, Total=2162 [2024-11-23 23:19:48,204 INFO L87 Difference]: Start difference. First operand 17987 states and 23404 transitions. Second operand has 47 states, 47 states have (on average 4.51063829787234) internal successors, (212), 47 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 23:19:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:56,017 INFO L93 Difference]: Finished difference Result 26352 states and 33772 transitions. [2024-11-23 23:19:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-23 23:19:56,017 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.51063829787234) internal successors, (212), 47 states have internal predecessors, (212), 0 states have call successors, (0), 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 79 [2024-11-23 23:19:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:56,040 INFO L225 Difference]: With dead ends: 26352 [2024-11-23 23:19:56,040 INFO L226 Difference]: Without dead ends: 19514 [2024-11-23 23:19:56,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1747, Invalid=6625, Unknown=0, NotChecked=0, Total=8372 [2024-11-23 23:19:56,047 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 20736 mSDsluCounter, 21251 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20736 SdHoareTripleChecker+Valid, 22766 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:56,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20736 Valid, 22766 Invalid, 1562 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:19:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19514 states. [2024-11-23 23:19:56,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19514 to 14577. [2024-11-23 23:19:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14577 states, 14575 states have (on average 1.3064150943396227) internal successors, (19041), 14576 states have internal predecessors, (19041), 0 states have call successors, (0), 0 states 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 23:19:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14577 states to 14577 states and 19041 transitions. [2024-11-23 23:19:56,886 INFO L78 Accepts]: Start accepts. Automaton has 14577 states and 19041 transitions. Word has length 79 [2024-11-23 23:19:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:56,886 INFO L471 AbstractCegarLoop]: Abstraction has 14577 states and 19041 transitions. [2024-11-23 23:19:56,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.51063829787234) internal successors, (212), 47 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 23:19:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 14577 states and 19041 transitions. [2024-11-23 23:19:56,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 23:19:56,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:56,889 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:56,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:19:57,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:19:57,090 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:57,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:57,090 INFO L85 PathProgramCache]: Analyzing trace with hash -237864929, now seen corresponding path program 1 times [2024-11-23 23:19:57,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:57,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97309069] [2024-11-23 23:19:57,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:57,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:19:57,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:57,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97309069] [2024-11-23 23:19:57,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97309069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:57,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:57,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:19:57,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571925909] [2024-11-23 23:19:57,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:57,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:19:57,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:57,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:19:57,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:19:57,173 INFO L87 Difference]: Start difference. First operand 14577 states and 19041 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 23:20:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:02,139 INFO L93 Difference]: Finished difference Result 17585 states and 24665 transitions. [2024-11-23 23:20:02,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:20:02,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-11-23 23:20:02,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:02,160 INFO L225 Difference]: With dead ends: 17585 [2024-11-23 23:20:02,160 INFO L226 Difference]: Without dead ends: 16081 [2024-11-23 23:20:02,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:20:02,164 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 1004 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:02,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 441 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-23 23:20:02,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16081 states. [2024-11-23 23:20:03,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16081 to 16079. [2024-11-23 23:20:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16079 states, 16077 states have (on average 1.3185295764135099) internal successors, (21198), 16078 states have internal predecessors, (21198), 0 states have call successors, (0), 0 states 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 23:20:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16079 states to 16079 states and 21198 transitions. [2024-11-23 23:20:03,403 INFO L78 Accepts]: Start accepts. Automaton has 16079 states and 21198 transitions. Word has length 121 [2024-11-23 23:20:03,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:03,403 INFO L471 AbstractCegarLoop]: Abstraction has 16079 states and 21198 transitions. [2024-11-23 23:20:03,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 23:20:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 16079 states and 21198 transitions. [2024-11-23 23:20:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 23:20:03,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:03,408 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-23 23:20:03,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 23:20:03,408 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:03,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:03,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1664818210, now seen corresponding path program 1 times [2024-11-23 23:20:03,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:03,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857051846] [2024-11-23 23:20:03,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:03,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 47 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:04,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:04,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857051846] [2024-11-23 23:20:04,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857051846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:04,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395342679] [2024-11-23 23:20:04,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:04,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:04,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:04,372 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:04,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:20:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:04,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:20:04,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 29 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:05,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:20:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 23 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:07,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395342679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:20:07,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:20:07,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 32 [2024-11-23 23:20:07,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973930164] [2024-11-23 23:20:07,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:20:07,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 23:20:07,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:07,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 23:20:07,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:20:07,720 INFO L87 Difference]: Start difference. First operand 16079 states and 21198 transitions. Second operand has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 states have internal predecessors, (336), 0 states have call successors, (0), 0 states 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 23:20:12,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:12,928 INFO L93 Difference]: Finished difference Result 28966 states and 36989 transitions. [2024-11-23 23:20:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-23 23:20:12,928 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 states have internal predecessors, (336), 0 states have call successors, (0), 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 124 [2024-11-23 23:20:12,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:12,948 INFO L225 Difference]: With dead ends: 28966 [2024-11-23 23:20:12,948 INFO L226 Difference]: Without dead ends: 22973 [2024-11-23 23:20:12,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1039, Invalid=4661, Unknown=0, NotChecked=0, Total=5700 [2024-11-23 23:20:12,957 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 19840 mSDsluCounter, 17252 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19840 SdHoareTripleChecker+Valid, 18799 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:12,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19840 Valid, 18799 Invalid, 1283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:20:12,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22973 states. [2024-11-23 23:20:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22973 to 17956. [2024-11-23 23:20:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17956 states, 17954 states have (on average 1.2931380193828674) internal successors, (23217), 17955 states have internal predecessors, (23217), 0 states have call successors, (0), 0 states 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 23:20:13,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17956 states to 17956 states and 23217 transitions. [2024-11-23 23:20:13,978 INFO L78 Accepts]: Start accepts. Automaton has 17956 states and 23217 transitions. Word has length 124 [2024-11-23 23:20:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:13,978 INFO L471 AbstractCegarLoop]: Abstraction has 17956 states and 23217 transitions. [2024-11-23 23:20:13,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 states have internal predecessors, (336), 0 states have call successors, (0), 0 states 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 23:20:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 17956 states and 23217 transitions. [2024-11-23 23:20:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 23:20:13,981 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:13,981 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-23 23:20:13,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:20:14,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 23:20:14,182 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:14,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1418733460, now seen corresponding path program 1 times [2024-11-23 23:20:14,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:14,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353701310] [2024-11-23 23:20:14,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:14,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:15,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:15,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353701310] [2024-11-23 23:20:15,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353701310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:15,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102144329] [2024-11-23 23:20:15,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:15,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:15,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:15,279 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:15,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:20:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:15,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 23:20:15,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 36 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:16,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:20:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102144329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:20:20,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:20:20,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2024-11-23 23:20:20,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420827214] [2024-11-23 23:20:20,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:20:20,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-23 23:20:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:20,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-23 23:20:20,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 23:20:20,126 INFO L87 Difference]: Start difference. First operand 17956 states and 23217 transitions. Second operand has 33 states, 33 states have (on average 9.090909090909092) internal successors, (300), 33 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:29,283 INFO L93 Difference]: Finished difference Result 64324 states and 80235 transitions. [2024-11-23 23:20:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-23 23:20:29,284 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.090909090909092) internal successors, (300), 33 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-11-23 23:20:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:29,327 INFO L225 Difference]: With dead ends: 64324 [2024-11-23 23:20:29,327 INFO L226 Difference]: Without dead ends: 49919 [2024-11-23 23:20:29,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2952 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1986, Invalid=8726, Unknown=0, NotChecked=0, Total=10712 [2024-11-23 23:20:29,345 INFO L435 NwaCegarLoop]: 1623 mSDtfsCounter, 20025 mSDsluCounter, 8741 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20025 SdHoareTripleChecker+Valid, 10364 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:29,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20025 Valid, 10364 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 23:20:29,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49919 states. [2024-11-23 23:20:31,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49919 to 26377. [2024-11-23 23:20:31,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26377 states, 26375 states have (on average 1.2578199052132701) internal successors, (33175), 26376 states have internal predecessors, (33175), 0 states have call successors, (0), 0 states 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 23:20:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26377 states to 26377 states and 33175 transitions. [2024-11-23 23:20:31,199 INFO L78 Accepts]: Start accepts. Automaton has 26377 states and 33175 transitions. Word has length 124 [2024-11-23 23:20:31,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:31,199 INFO L471 AbstractCegarLoop]: Abstraction has 26377 states and 33175 transitions. [2024-11-23 23:20:31,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.090909090909092) internal successors, (300), 33 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:20:31,200 INFO L276 IsEmpty]: Start isEmpty. Operand 26377 states and 33175 transitions. [2024-11-23 23:20:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 23:20:31,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:31,202 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-23 23:20:31,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:20:31,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:31,404 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:31,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1450242217, now seen corresponding path program 1 times [2024-11-23 23:20:31,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:31,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872052791] [2024-11-23 23:20:31,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:31,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:32,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872052791] [2024-11-23 23:20:32,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872052791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:32,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365455337] [2024-11-23 23:20:32,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:32,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:32,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:32,439 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:32,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:20:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:32,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 23:20:32,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 29 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:33,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:20:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:35,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365455337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:20:35,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:20:35,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2024-11-23 23:20:35,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288234243] [2024-11-23 23:20:35,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:20:35,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 23:20:35,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:35,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 23:20:35,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:20:35,554 INFO L87 Difference]: Start difference. First operand 26377 states and 33175 transitions. Second operand has 32 states, 32 states have (on average 9.5625) internal successors, (306), 31 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 23:20:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:38,869 INFO L93 Difference]: Finished difference Result 41128 states and 51205 transitions. [2024-11-23 23:20:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 23:20:38,869 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.5625) internal successors, (306), 31 states have internal predecessors, (306), 0 states have call successors, (0), 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 125 [2024-11-23 23:20:38,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:38,899 INFO L225 Difference]: With dead ends: 41128 [2024-11-23 23:20:38,899 INFO L226 Difference]: Without dead ends: 27281 [2024-11-23 23:20:38,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=497, Invalid=2053, Unknown=0, NotChecked=0, Total=2550 [2024-11-23 23:20:38,909 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 24245 mSDsluCounter, 12331 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24245 SdHoareTripleChecker+Valid, 13848 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:38,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24245 Valid, 13848 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:20:38,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27281 states. [2024-11-23 23:20:40,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27281 to 26377. [2024-11-23 23:20:40,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26377 states, 26375 states have (on average 1.249781990521327) internal successors, (32963), 26376 states have internal predecessors, (32963), 0 states have call successors, (0), 0 states 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 23:20:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26377 states to 26377 states and 32963 transitions. [2024-11-23 23:20:40,922 INFO L78 Accepts]: Start accepts. Automaton has 26377 states and 32963 transitions. Word has length 125 [2024-11-23 23:20:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:40,923 INFO L471 AbstractCegarLoop]: Abstraction has 26377 states and 32963 transitions. [2024-11-23 23:20:40,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.5625) internal successors, (306), 31 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 23:20:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 26377 states and 32963 transitions. [2024-11-23 23:20:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 23:20:40,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:40,927 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:40,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 23:20:41,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-23 23:20:41,131 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:41,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:41,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1091070560, now seen corresponding path program 1 times [2024-11-23 23:20:41,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:41,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135331970] [2024-11-23 23:20:41,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:42,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:42,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135331970] [2024-11-23 23:20:42,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135331970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:42,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108053694] [2024-11-23 23:20:42,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:42,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:42,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:42,307 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:42,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:20:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:42,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-23 23:20:42,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:45,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:20:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:53,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108053694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:20:53,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:20:53,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 26] total 68 [2024-11-23 23:20:53,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077675517] [2024-11-23 23:20:53,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:20:53,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-23 23:20:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:53,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-23 23:20:53,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=4009, Unknown=0, NotChecked=0, Total=4556 [2024-11-23 23:20:53,932 INFO L87 Difference]: Start difference. First operand 26377 states and 32963 transitions. Second operand has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 23:22:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:22:18,129 INFO L93 Difference]: Finished difference Result 87868 states and 106055 transitions. [2024-11-23 23:22:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2024-11-23 23:22:18,130 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 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 126 [2024-11-23 23:22:18,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:22:18,197 INFO L225 Difference]: With dead ends: 87868 [2024-11-23 23:22:18,197 INFO L226 Difference]: Without dead ends: 71822 [2024-11-23 23:22:18,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26449 ImplicationChecksByTransitivity, 75.7s TimeCoverageRelationStatistics Valid=11037, Invalid=58395, Unknown=0, NotChecked=0, Total=69432 [2024-11-23 23:22:18,215 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 34985 mSDsluCounter, 26797 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34985 SdHoareTripleChecker+Valid, 28322 SdHoareTripleChecker+Invalid, 4029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:22:18,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34985 Valid, 28322 Invalid, 4029 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-23 23:22:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71822 states. [2024-11-23 23:22:21,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71822 to 35053. [2024-11-23 23:22:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35053 states, 35051 states have (on average 1.2301218224872328) internal successors, (43117), 35052 states have internal predecessors, (43117), 0 states have call successors, (0), 0 states 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 23:22:21,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35053 states to 35053 states and 43117 transitions. [2024-11-23 23:22:21,666 INFO L78 Accepts]: Start accepts. Automaton has 35053 states and 43117 transitions. Word has length 126 [2024-11-23 23:22:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:22:21,666 INFO L471 AbstractCegarLoop]: Abstraction has 35053 states and 43117 transitions. [2024-11-23 23:22:21,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 23:22:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 35053 states and 43117 transitions. [2024-11-23 23:22:21,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 23:22:21,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:21,672 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:22:21,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-23 23:22:21,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-23 23:22:21,876 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:21,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:21,877 INFO L85 PathProgramCache]: Analyzing trace with hash 607913984, now seen corresponding path program 1 times [2024-11-23 23:22:21,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:21,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350298715] [2024-11-23 23:22:21,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:21,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:23,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:22:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350298715] [2024-11-23 23:22:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350298715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:22:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511895289] [2024-11-23 23:22:23,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:23,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:22:23,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:22:23,911 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:22:23,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:22:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:24,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-23 23:22:24,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:22:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:26,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:22:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:33,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511895289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:22:33,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:22:33,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 25] total 68 [2024-11-23 23:22:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421960731] [2024-11-23 23:22:33,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:22:33,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-23 23:22:33,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:22:33,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-23 23:22:33,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=4203, Unknown=0, NotChecked=0, Total=4556 [2024-11-23 23:22:33,421 INFO L87 Difference]: Start difference. First operand 35053 states and 43117 transitions. Second operand has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 23:23:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:23:39,918 INFO L93 Difference]: Finished difference Result 106038 states and 127311 transitions. [2024-11-23 23:23:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states. [2024-11-23 23:23:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 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 126 [2024-11-23 23:23:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:23:39,992 INFO L225 Difference]: With dead ends: 106038 [2024-11-23 23:23:39,992 INFO L226 Difference]: Without dead ends: 93817 [2024-11-23 23:23:40,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44414 ImplicationChecksByTransitivity, 51.1s TimeCoverageRelationStatistics Valid=15429, Invalid=110241, Unknown=0, NotChecked=0, Total=125670 [2024-11-23 23:23:40,006 INFO L435 NwaCegarLoop]: 1679 mSDtfsCounter, 32939 mSDsluCounter, 53151 mSDsCounter, 0 mSdLazyCounter, 10158 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32939 SdHoareTripleChecker+Valid, 54830 SdHoareTripleChecker+Invalid, 10412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 10158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:23:40,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32939 Valid, 54830 Invalid, 10412 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [254 Valid, 10158 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-23 23:23:40,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93817 states. [2024-11-23 23:23:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93817 to 65379. [2024-11-23 23:23:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65379 states, 65377 states have (on average 1.2134848647077718) internal successors, (79334), 65378 states have internal predecessors, (79334), 0 states have call successors, (0), 0 states 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 23:23:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65379 states to 65379 states and 79334 transitions. [2024-11-23 23:23:47,950 INFO L78 Accepts]: Start accepts. Automaton has 65379 states and 79334 transitions. Word has length 126 [2024-11-23 23:23:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:23:47,950 INFO L471 AbstractCegarLoop]: Abstraction has 65379 states and 79334 transitions. [2024-11-23 23:23:47,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 23:23:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 65379 states and 79334 transitions. [2024-11-23 23:23:47,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 23:23:47,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:23:47,955 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:23:47,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 23:23:48,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:23:48,156 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:23:48,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:23:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1164539556, now seen corresponding path program 1 times [2024-11-23 23:23:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:23:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349234552] [2024-11-23 23:23:48,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:23:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 43 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:23:51,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:23:51,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349234552] [2024-11-23 23:23:51,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349234552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:23:51,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691514286] [2024-11-23 23:23:51,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:23:51,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:23:51,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:23:51,183 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:23:51,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:23:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:23:51,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-23 23:23:51,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:23:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:23:54,459 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:24:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:24:00,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691514286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:24:00,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:24:00,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 22] total 70 [2024-11-23 23:24:00,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269294829] [2024-11-23 23:24:00,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:24:00,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-23 23:24:00,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:00,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-23 23:24:00,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=4487, Unknown=0, NotChecked=0, Total=4830 [2024-11-23 23:24:00,140 INFO L87 Difference]: Start difference. First operand 65379 states and 79334 transitions. Second operand has 70 states, 70 states have (on average 5.185714285714286) internal successors, (363), 70 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 23:25:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:40,303 INFO L93 Difference]: Finished difference Result 208032 states and 249000 transitions. [2024-11-23 23:25:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2024-11-23 23:25:40,304 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.185714285714286) internal successors, (363), 70 states have internal predecessors, (363), 0 states have call successors, (0), 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 126 [2024-11-23 23:25:40,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:40,456 INFO L225 Difference]: With dead ends: 208032 [2024-11-23 23:25:40,457 INFO L226 Difference]: Without dead ends: 169589 [2024-11-23 23:25:40,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26561 ImplicationChecksByTransitivity, 77.0s TimeCoverageRelationStatistics Valid=10990, Invalid=64360, Unknown=0, NotChecked=0, Total=75350 [2024-11-23 23:25:40,489 INFO L435 NwaCegarLoop]: 1662 mSDtfsCounter, 29344 mSDsluCounter, 43164 mSDsCounter, 0 mSdLazyCounter, 7829 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29344 SdHoareTripleChecker+Valid, 44826 SdHoareTripleChecker+Invalid, 8120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 7829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:40,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29344 Valid, 44826 Invalid, 8120 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [291 Valid, 7829 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2024-11-23 23:25:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169589 states. [2024-11-23 23:25:49,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169589 to 84446. [2024-11-23 23:25:49,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84446 states, 84444 states have (on average 1.2011392165221921) internal successors, (101429), 84445 states have internal predecessors, (101429), 0 states have call successors, (0), 0 states 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 23:25:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84446 states to 84446 states and 101429 transitions. [2024-11-23 23:25:49,864 INFO L78 Accepts]: Start accepts. Automaton has 84446 states and 101429 transitions. Word has length 126 [2024-11-23 23:25:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:49,865 INFO L471 AbstractCegarLoop]: Abstraction has 84446 states and 101429 transitions. [2024-11-23 23:25:49,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.185714285714286) internal successors, (363), 70 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 23:25:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 84446 states and 101429 transitions. [2024-11-23 23:25:49,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:25:49,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:49,869 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-23 23:25:49,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 23:25:50,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:25:50,069 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:50,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:50,070 INFO L85 PathProgramCache]: Analyzing trace with hash -568615929, now seen corresponding path program 1 times [2024-11-23 23:25:50,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:50,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182121454] [2024-11-23 23:25:50,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:50,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 22 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:25:52,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:52,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182121454] [2024-11-23 23:25:52,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182121454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:25:52,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985642798] [2024-11-23 23:25:52,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:52,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:25:52,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:25:52,078 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:25:52,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_299e99ff-e9c1-43b0-91d0-9f0ff28aaf8f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 23:25:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:52,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-23 23:25:52,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:25:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 22 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:25:58,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:26:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 22 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:26:10,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985642798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:26:10,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:26:10,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 33, 31] total 88 [2024-11-23 23:26:10,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277087033] [2024-11-23 23:26:10,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:26:10,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-23 23:26:10,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:26:10,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-23 23:26:10,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=589, Invalid=7067, Unknown=0, NotChecked=0, Total=7656 [2024-11-23 23:26:10,187 INFO L87 Difference]: Start difference. First operand 84446 states and 101429 transitions. Second operand has 88 states, 88 states have (on average 4.113636363636363) internal successors, (362), 88 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)