./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label00.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_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/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_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/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_bebfde6e-45e2-48c0-bb2a-551f92ad4346/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 86c00f883fa3e8faefbb452f43186512b5e61200a78dfa098cc8c12a3f17e307 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:24:14,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:24:14,835 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:24:14,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:24:14,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:24:14,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:24:14,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:24:14,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:24:14,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:24:14,897 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:24:14,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:24:14,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:24:14,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:24:14,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:24:14,900 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:24:14,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:24:14,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:24:14,901 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:24:14,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:24:14,901 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:24:14,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:24:14,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:24:14,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:24:14,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:24:14,902 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:24:14,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:24:14,902 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:24:14,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:24:14,903 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:24:14,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:24:14,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:24:14,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:24:14,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:24:14,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:24:14,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:24:14,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:24:14,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:24:14,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:24:14,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:24:14,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:24:14,906 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:24:14,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:24:14,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:24:14,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:24:14,906 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:24:14,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:24:14,906 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:24:14,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:24:14,907 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_bebfde6e-45e2-48c0-bb2a-551f92ad4346/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 -> 86c00f883fa3e8faefbb452f43186512b5e61200a78dfa098cc8c12a3f17e307 [2024-11-23 23:24:15,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:24:15,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:24:15,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:24:15,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:24:15,318 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:24:15,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label00.c [2024-11-23 23:24:18,467 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/data/24fc55b15/e8ce44ea6f384925b9127edee76e7fa5/FLAGeca1d43c5 [2024-11-23 23:24:19,149 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:24:19,150 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label00.c [2024-11-23 23:24:19,187 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/data/24fc55b15/e8ce44ea6f384925b9127edee76e7fa5/FLAGeca1d43c5 [2024-11-23 23:24:19,544 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/data/24fc55b15/e8ce44ea6f384925b9127edee76e7fa5 [2024-11-23 23:24:19,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:24:19,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:24:19,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:24:19,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:24:19,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:24:19,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:24:19" (1/1) ... [2024-11-23 23:24:19,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c914fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:19, skipping insertion in model container [2024-11-23 23:24:19,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:24:19" (1/1) ... [2024-11-23 23:24:19,763 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:24:20,254 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_bebfde6e-45e2-48c0-bb2a-551f92ad4346/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label00.c[8616,8629] [2024-11-23 23:24:20,292 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_bebfde6e-45e2-48c0-bb2a-551f92ad4346/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label00.c[10491,10504] [2024-11-23 23:24:21,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:24:21,310 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:24:21,404 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_bebfde6e-45e2-48c0-bb2a-551f92ad4346/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label00.c[8616,8629] [2024-11-23 23:24:21,416 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_bebfde6e-45e2-48c0-bb2a-551f92ad4346/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label00.c[10491,10504] [2024-11-23 23:24:22,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:24:22,088 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:24:22,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22 WrapperNode [2024-11-23 23:24:22,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:24:22,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:24:22,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:24:22,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:24:22,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:22,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:22,592 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5037 [2024-11-23 23:24:22,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:24:22,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:24:22,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:24:22,594 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:24:22,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:22,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:22,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:22,974 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 23:24:22,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:22,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:23,231 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:23,264 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:23,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:23,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:23,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:23,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:24:23,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:24:23,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:24:23,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:24:23,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (1/1) ... [2024-11-23 23:24:23,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:24:23,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:24:23,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:24:23,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:24:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:24:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:24:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:24:23,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:24:23,746 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:24:23,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:24:30,896 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2024-11-23 23:24:30,896 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:24:30,952 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:24:30,952 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 23:24:30,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:24:30 BoogieIcfgContainer [2024-11-23 23:24:30,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:24:30,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:24:30,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:24:30,965 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:24:30,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:24:19" (1/3) ... [2024-11-23 23:24:30,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd4c87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:24:30, skipping insertion in model container [2024-11-23 23:24:30,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:22" (2/3) ... [2024-11-23 23:24:30,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd4c87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:24:30, skipping insertion in model container [2024-11-23 23:24:30,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:24:30" (3/3) ... [2024-11-23 23:24:30,968 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label00.c [2024-11-23 23:24:30,991 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:24:30,996 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label00.c that has 1 procedures, 886 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-23 23:24:31,130 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:24:31,152 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;@2e416344, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:24:31,153 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 23:24:31,167 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 23:24:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-23 23:24:31,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:31,176 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:24:31,177 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:31,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:31,185 INFO L85 PathProgramCache]: Analyzing trace with hash 496136501, now seen corresponding path program 1 times [2024-11-23 23:24:31,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:31,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069195004] [2024-11-23 23:24:31,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:31,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:31,627 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 23:24:31,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:31,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069195004] [2024-11-23 23:24:31,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069195004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:31,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:31,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:24:31,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326408998] [2024-11-23 23:24:31,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:31,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:31,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:31,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:31,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:31,672 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 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 23:24:36,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:36,992 INFO L93 Difference]: Finished difference Result 2498 states and 4812 transitions. [2024-11-23 23:24:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:24:36,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-23 23:24:36,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:37,026 INFO L225 Difference]: With dead ends: 2498 [2024-11-23 23:24:37,026 INFO L226 Difference]: Without dead ends: 1571 [2024-11-23 23:24:37,036 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 23:24:37,042 INFO L435 NwaCegarLoop]: 585 mSDtfsCounter, 932 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:37,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 596 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-23 23:24:37,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2024-11-23 23:24:37,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1571. [2024-11-23 23:24:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1569 states have (on average 1.6418100701083493) internal successors, (2576), 1570 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 23:24:37,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2576 transitions. [2024-11-23 23:24:37,196 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2576 transitions. Word has length 16 [2024-11-23 23:24:37,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:37,196 INFO L471 AbstractCegarLoop]: Abstraction has 1571 states and 2576 transitions. [2024-11-23 23:24:37,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 23:24:37,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2576 transitions. [2024-11-23 23:24:37,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-23 23:24:37,198 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:37,198 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 23:24:37,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:24:37,198 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:37,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash 194021771, now seen corresponding path program 1 times [2024-11-23 23:24:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:37,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162936729] [2024-11-23 23:24:37,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:37,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:37,506 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 23:24:37,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:37,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162936729] [2024-11-23 23:24:37,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162936729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:37,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:37,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:24:37,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943185360] [2024-11-23 23:24:37,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:37,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:24:37,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:37,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:24:37,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:24:37,511 INFO L87 Difference]: Start difference. First operand 1571 states and 2576 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 23:24:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:37,639 INFO L93 Difference]: Finished difference Result 1649 states and 2696 transitions. [2024-11-23 23:24:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:24:37,640 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 23:24:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:37,649 INFO L225 Difference]: With dead ends: 1649 [2024-11-23 23:24:37,649 INFO L226 Difference]: Without dead ends: 1608 [2024-11-23 23:24:37,650 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 23:24:37,652 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 57 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 23:24:37,652 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 23:24:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2024-11-23 23:24:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1571. [2024-11-23 23:24:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1569 states have (on average 1.627151051625239) internal successors, (2553), 1570 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states 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 23:24:37,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2553 transitions. [2024-11-23 23:24:37,731 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2553 transitions. Word has length 23 [2024-11-23 23:24:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:37,732 INFO L471 AbstractCegarLoop]: Abstraction has 1571 states and 2553 transitions. [2024-11-23 23:24:37,732 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 23:24:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2553 transitions. [2024-11-23 23:24:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-23 23:24:37,737 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:37,738 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 23:24:37,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:24:37,738 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:37,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:37,739 INFO L85 PathProgramCache]: Analyzing trace with hash 651515760, now seen corresponding path program 1 times [2024-11-23 23:24:37,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:37,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468993940] [2024-11-23 23:24:37,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:37,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:38,129 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 23:24:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:38,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468993940] [2024-11-23 23:24:38,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468993940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:38,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:38,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:24:38,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902735471] [2024-11-23 23:24:38,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:38,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:24:38,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:38,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:24:38,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:24:38,133 INFO L87 Difference]: Start difference. First operand 1571 states and 2553 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 23:24:38,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:38,423 INFO L93 Difference]: Finished difference Result 1867 states and 3017 transitions. [2024-11-23 23:24:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:24:38,424 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 23:24:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:38,433 INFO L225 Difference]: With dead ends: 1867 [2024-11-23 23:24:38,433 INFO L226 Difference]: Without dead ends: 1830 [2024-11-23 23:24:38,434 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 23:24:38,435 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 23:24:38,436 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 23:24:38,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2024-11-23 23:24:38,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1606. [2024-11-23 23:24:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1604 states have (on average 1.625935162094763) internal successors, (2608), 1605 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states 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 23:24:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2608 transitions. [2024-11-23 23:24:38,495 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2608 transitions. Word has length 45 [2024-11-23 23:24:38,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:38,495 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2608 transitions. [2024-11-23 23:24:38,495 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 23:24:38,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2608 transitions. [2024-11-23 23:24:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-23 23:24:38,498 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:38,498 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 23:24:38,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:24:38,500 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:38,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:38,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1920688320, now seen corresponding path program 1 times [2024-11-23 23:24:38,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:38,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493083197] [2024-11-23 23:24:38,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:38,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:38,662 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 23:24:38,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:38,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493083197] [2024-11-23 23:24:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493083197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:38,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:38,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:24:38,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439656401] [2024-11-23 23:24:38,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:38,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:38,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:38,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:38,663 INFO L87 Difference]: Start difference. First operand 1606 states and 2608 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 23:24:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:38,711 INFO L93 Difference]: Finished difference Result 1739 states and 2815 transitions. [2024-11-23 23:24:38,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:24:38,711 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 23:24:38,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:38,719 INFO L225 Difference]: With dead ends: 1739 [2024-11-23 23:24:38,719 INFO L226 Difference]: Without dead ends: 1667 [2024-11-23 23:24:38,720 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 23:24:38,723 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 23:24:38,724 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 23:24:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2024-11-23 23:24:38,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2024-11-23 23:24:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1663 states have (on average 1.6223692122669873) internal successors, (2698), 1664 states have internal predecessors, (2698), 0 states have call successors, (0), 0 states 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 23:24:38,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2698 transitions. [2024-11-23 23:24:38,781 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2698 transitions. Word has length 47 [2024-11-23 23:24:38,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:38,781 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2698 transitions. [2024-11-23 23:24:38,781 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 23:24:38,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2698 transitions. [2024-11-23 23:24:38,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-23 23:24:38,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:38,783 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 23:24:38,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:24:38,783 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:38,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:38,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1987181832, now seen corresponding path program 1 times [2024-11-23 23:24:38,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:38,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905285419] [2024-11-23 23:24:38,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:38,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:39,225 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 23:24:39,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:39,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905285419] [2024-11-23 23:24:39,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905285419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:39,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:39,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:24:39,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781538933] [2024-11-23 23:24:39,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:39,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:24:39,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:39,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:24:39,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:24:39,227 INFO L87 Difference]: Start difference. First operand 1665 states and 2698 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 23:24:39,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:39,434 INFO L93 Difference]: Finished difference Result 1798 states and 2902 transitions. [2024-11-23 23:24:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:24:39,435 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 23:24:39,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:39,446 INFO L225 Difference]: With dead ends: 1798 [2024-11-23 23:24:39,446 INFO L226 Difference]: Without dead ends: 1667 [2024-11-23 23:24:39,447 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 23:24:39,449 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 2968 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2968 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:39,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2968 Valid, 1685 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:24:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2024-11-23 23:24:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2024-11-23 23:24:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1663 states have (on average 1.6211665664461816) internal successors, (2696), 1664 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states 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 23:24:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2696 transitions. [2024-11-23 23:24:39,504 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2696 transitions. Word has length 47 [2024-11-23 23:24:39,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:39,505 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2696 transitions. [2024-11-23 23:24:39,505 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 23:24:39,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2696 transitions. [2024-11-23 23:24:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-23 23:24:39,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:39,507 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 23:24:39,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:24:39,507 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:39,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:39,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1058371496, now seen corresponding path program 1 times [2024-11-23 23:24:39,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:39,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468321690] [2024-11-23 23:24:39,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:39,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:39,974 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 23:24:39,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:39,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468321690] [2024-11-23 23:24:39,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468321690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:39,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:39,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:24:39,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173367102] [2024-11-23 23:24:39,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:39,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:24:39,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:39,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:24:39,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:24:39,980 INFO L87 Difference]: Start difference. First operand 1665 states and 2696 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 23:24:40,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:40,072 INFO L93 Difference]: Finished difference Result 1673 states and 2705 transitions. [2024-11-23 23:24:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:24:40,073 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 23:24:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:40,085 INFO L225 Difference]: With dead ends: 1673 [2024-11-23 23:24:40,086 INFO L226 Difference]: Without dead ends: 1671 [2024-11-23 23:24:40,087 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 23:24:40,088 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 23:24:40,088 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 23:24:40,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2024-11-23 23:24:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1671. [2024-11-23 23:24:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1669 states have (on average 1.6183343319352905) internal successors, (2701), 1670 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states 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 23:24:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2701 transitions. [2024-11-23 23:24:40,164 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2701 transitions. Word has length 48 [2024-11-23 23:24:40,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:40,165 INFO L471 AbstractCegarLoop]: Abstraction has 1671 states and 2701 transitions. [2024-11-23 23:24:40,166 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 23:24:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2701 transitions. [2024-11-23 23:24:40,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-23 23:24:40,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:40,168 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 23:24:40,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:24:40,168 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:40,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:40,169 INFO L85 PathProgramCache]: Analyzing trace with hash -912919064, now seen corresponding path program 1 times [2024-11-23 23:24:40,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:40,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512997074] [2024-11-23 23:24:40,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:40,329 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 23:24:40,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:40,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512997074] [2024-11-23 23:24:40,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512997074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:40,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:40,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:24:40,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884573484] [2024-11-23 23:24:40,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:40,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:40,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:40,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:40,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:40,333 INFO L87 Difference]: Start difference. First operand 1671 states and 2701 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 23:24:40,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:40,396 INFO L93 Difference]: Finished difference Result 1822 states and 2927 transitions. [2024-11-23 23:24:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:24:40,397 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 23:24:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:40,407 INFO L225 Difference]: With dead ends: 1822 [2024-11-23 23:24:40,407 INFO L226 Difference]: Without dead ends: 1744 [2024-11-23 23:24:40,408 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 23:24:40,410 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 23:24:40,410 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 23:24:40,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2024-11-23 23:24:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1742. [2024-11-23 23:24:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1740 states have (on average 1.6120689655172413) internal successors, (2805), 1741 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states 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 23:24:40,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2805 transitions. [2024-11-23 23:24:40,468 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2805 transitions. Word has length 49 [2024-11-23 23:24:40,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:40,469 INFO L471 AbstractCegarLoop]: Abstraction has 1742 states and 2805 transitions. [2024-11-23 23:24:40,469 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 23:24:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2805 transitions. [2024-11-23 23:24:40,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-23 23:24:40,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:40,470 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 23:24:40,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:24:40,471 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:40,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash 325342952, now seen corresponding path program 1 times [2024-11-23 23:24:40,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:40,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95850557] [2024-11-23 23:24:40,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:40,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:40,559 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 23:24:40,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:40,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95850557] [2024-11-23 23:24:40,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95850557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:40,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:40,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:24:40,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541553183] [2024-11-23 23:24:40,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:40,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:40,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:40,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:40,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:40,562 INFO L87 Difference]: Start difference. First operand 1742 states and 2805 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 23:24:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:40,610 INFO L93 Difference]: Finished difference Result 2128 states and 3377 transitions. [2024-11-23 23:24:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:24:40,610 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 23:24:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:40,619 INFO L225 Difference]: With dead ends: 2128 [2024-11-23 23:24:40,619 INFO L226 Difference]: Without dead ends: 1923 [2024-11-23 23:24:40,620 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 23:24:40,622 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 23:24:40,623 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 23:24:40,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2024-11-23 23:24:40,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1921. [2024-11-23 23:24:40,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1919 states have (on average 1.5961438249088067) internal successors, (3063), 1920 states have internal predecessors, (3063), 0 states have call successors, (0), 0 states 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 23:24:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3063 transitions. [2024-11-23 23:24:40,690 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3063 transitions. Word has length 49 [2024-11-23 23:24:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:40,690 INFO L471 AbstractCegarLoop]: Abstraction has 1921 states and 3063 transitions. [2024-11-23 23:24:40,691 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 23:24:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3063 transitions. [2024-11-23 23:24:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-23 23:24:40,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:40,692 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 23:24:40,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:24:40,693 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:40,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:40,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1890125848, now seen corresponding path program 1 times [2024-11-23 23:24:40,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:40,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822996720] [2024-11-23 23:24:40,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:40,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:40,766 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 23:24:40,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:40,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822996720] [2024-11-23 23:24:40,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822996720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:40,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:40,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:24:40,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953484395] [2024-11-23 23:24:40,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:40,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:40,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:40,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:40,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:40,768 INFO L87 Difference]: Start difference. First operand 1921 states and 3063 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 23:24:40,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:40,822 INFO L93 Difference]: Finished difference Result 2641 states and 4109 transitions. [2024-11-23 23:24:40,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:24:40,822 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 23:24:40,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:40,830 INFO L225 Difference]: With dead ends: 2641 [2024-11-23 23:24:40,830 INFO L226 Difference]: Without dead ends: 2257 [2024-11-23 23:24:40,831 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 23:24:40,832 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 23:24:40,832 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 23:24:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-11-23 23:24:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2255. [2024-11-23 23:24:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2253 states have (on average 1.5672436750998668) internal successors, (3531), 2254 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states 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 23:24:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3531 transitions. [2024-11-23 23:24:40,907 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3531 transitions. Word has length 49 [2024-11-23 23:24:40,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:40,908 INFO L471 AbstractCegarLoop]: Abstraction has 2255 states and 3531 transitions. [2024-11-23 23:24:40,908 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 23:24:40,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3531 transitions. [2024-11-23 23:24:40,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-23 23:24:40,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:40,909 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 23:24:40,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:24:40,909 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:40,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:40,910 INFO L85 PathProgramCache]: Analyzing trace with hash -109192984, now seen corresponding path program 1 times [2024-11-23 23:24:40,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:40,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084167439] [2024-11-23 23:24:40,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:40,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:40,996 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 23:24:40,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:40,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084167439] [2024-11-23 23:24:40,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084167439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:40,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:40,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:24:40,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330536500] [2024-11-23 23:24:40,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:40,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:40,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:40,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:40,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:40,999 INFO L87 Difference]: Start difference. First operand 2255 states and 3531 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 23:24:41,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:41,067 INFO L93 Difference]: Finished difference Result 3595 states and 5429 transitions. [2024-11-23 23:24:41,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:24:41,068 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 23:24:41,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:41,078 INFO L225 Difference]: With dead ends: 3595 [2024-11-23 23:24:41,078 INFO L226 Difference]: Without dead ends: 2877 [2024-11-23 23:24:41,080 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 23:24:41,080 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 23:24:41,081 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 23:24:41,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2024-11-23 23:24:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2875. [2024-11-23 23:24:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2873 states have (on average 1.5214061956143403) internal successors, (4371), 2874 states have internal predecessors, (4371), 0 states have call successors, (0), 0 states 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 23:24:41,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4371 transitions. [2024-11-23 23:24:41,177 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4371 transitions. Word has length 49 [2024-11-23 23:24:41,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:41,177 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 4371 transitions. [2024-11-23 23:24:41,177 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 23:24:41,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4371 transitions. [2024-11-23 23:24:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:24:41,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:41,179 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 23:24:41,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:24:41,179 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:41,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash -280922677, now seen corresponding path program 1 times [2024-11-23 23:24:41,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:41,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329391526] [2024-11-23 23:24:41,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:41,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:41,427 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 23:24:41,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:41,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329391526] [2024-11-23 23:24:41,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329391526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:41,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:41,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:24:41,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121458997] [2024-11-23 23:24:41,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:41,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:24:41,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:41,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:24:41,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:24:41,429 INFO L87 Difference]: Start difference. First operand 2875 states and 4371 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 23:24:41,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:41,783 INFO L93 Difference]: Finished difference Result 8149 states and 11744 transitions. [2024-11-23 23:24:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:24:41,783 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 23:24:41,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:41,825 INFO L225 Difference]: With dead ends: 8149 [2024-11-23 23:24:41,826 INFO L226 Difference]: Without dead ends: 7187 [2024-11-23 23:24:41,829 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 23:24:41,830 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 23:24:41,830 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 23:24:41,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2024-11-23 23:24:41,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 4027. [2024-11-23 23:24:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 4025 states have (on average 1.4814906832298136) internal successors, (5963), 4026 states have internal predecessors, (5963), 0 states have call successors, (0), 0 states 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 23:24:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 5963 transitions. [2024-11-23 23:24:42,019 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 5963 transitions. Word has length 67 [2024-11-23 23:24:42,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:42,019 INFO L471 AbstractCegarLoop]: Abstraction has 4027 states and 5963 transitions. [2024-11-23 23:24:42,019 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 23:24:42,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 5963 transitions. [2024-11-23 23:24:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:24:42,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:42,022 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 23:24:42,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:24:42,022 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:42,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:42,023 INFO L85 PathProgramCache]: Analyzing trace with hash 957339339, now seen corresponding path program 1 times [2024-11-23 23:24:42,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:42,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468325052] [2024-11-23 23:24:42,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:42,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:42,221 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 23:24:42,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:42,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468325052] [2024-11-23 23:24:42,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468325052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:42,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:42,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:24:42,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404999820] [2024-11-23 23:24:42,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:42,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:24:42,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:42,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:24:42,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:24:42,223 INFO L87 Difference]: Start difference. First operand 4027 states and 5963 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 23:24:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:42,682 INFO L93 Difference]: Finished difference Result 9485 states and 13600 transitions. [2024-11-23 23:24:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:24:42,683 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 23:24:42,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:42,720 INFO L225 Difference]: With dead ends: 9485 [2024-11-23 23:24:42,721 INFO L226 Difference]: Without dead ends: 8147 [2024-11-23 23:24:42,725 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 23:24:42,726 INFO L435 NwaCegarLoop]: 1578 mSDtfsCounter, 4652 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:42,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3373 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:24:42,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8147 states. [2024-11-23 23:24:42,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8147 to 5843. [2024-11-23 23:24:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5843 states, 5841 states have (on average 1.4495805512754665) internal successors, (8467), 5842 states have internal predecessors, (8467), 0 states have call successors, (0), 0 states 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 23:24:42,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 8467 transitions. [2024-11-23 23:24:42,988 INFO L78 Accepts]: Start accepts. Automaton has 5843 states and 8467 transitions. Word has length 67 [2024-11-23 23:24:42,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:42,988 INFO L471 AbstractCegarLoop]: Abstraction has 5843 states and 8467 transitions. [2024-11-23 23:24:42,990 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 23:24:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5843 states and 8467 transitions. [2024-11-23 23:24:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:24:42,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:42,994 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 23:24:42,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:24:42,994 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:42,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:42,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1258129461, now seen corresponding path program 1 times [2024-11-23 23:24:42,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:42,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306768108] [2024-11-23 23:24:42,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:42,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:43,185 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 23:24:43,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306768108] [2024-11-23 23:24:43,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306768108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:43,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:43,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:24:43,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268886883] [2024-11-23 23:24:43,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:43,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:24:43,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:43,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:24:43,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:24:43,188 INFO L87 Difference]: Start difference. First operand 5843 states and 8467 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 23:24:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:43,634 INFO L93 Difference]: Finished difference Result 10821 states and 15448 transitions. [2024-11-23 23:24:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:24:43,635 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 23:24:43,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:43,662 INFO L225 Difference]: With dead ends: 10821 [2024-11-23 23:24:43,662 INFO L226 Difference]: Without dead ends: 9483 [2024-11-23 23:24:43,667 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 23:24:43,668 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 23:24:43,668 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 23:24:43,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9483 states. [2024-11-23 23:24:44,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9483 to 7179. [2024-11-23 23:24:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7179 states, 7177 states have (on average 1.4372300404068552) internal successors, (10315), 7178 states have internal predecessors, (10315), 0 states have call successors, (0), 0 states 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 23:24:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 10315 transitions. [2024-11-23 23:24:44,149 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 10315 transitions. Word has length 67 [2024-11-23 23:24:44,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:44,149 INFO L471 AbstractCegarLoop]: Abstraction has 7179 states and 10315 transitions. [2024-11-23 23:24:44,150 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 23:24:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 10315 transitions. [2024-11-23 23:24:44,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 23:24:44,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:44,154 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 23:24:44,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:24:44,155 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:44,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:44,156 INFO L85 PathProgramCache]: Analyzing trace with hash 522803403, now seen corresponding path program 1 times [2024-11-23 23:24:44,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:44,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593270602] [2024-11-23 23:24:44,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:44,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:44,358 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 23:24:44,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:44,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593270602] [2024-11-23 23:24:44,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593270602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:44,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:44,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:24:44,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135652868] [2024-11-23 23:24:44,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:44,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:24:44,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:44,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:24:44,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:24:44,360 INFO L87 Difference]: Start difference. First operand 7179 states and 10315 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 23:24:44,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:44,733 INFO L93 Difference]: Finished difference Result 12157 states and 17296 transitions. [2024-11-23 23:24:44,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:24:44,733 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 23:24:44,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:44,759 INFO L225 Difference]: With dead ends: 12157 [2024-11-23 23:24:44,759 INFO L226 Difference]: Without dead ends: 10819 [2024-11-23 23:24:44,763 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 23:24:44,764 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 23:24:44,764 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 23:24:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2024-11-23 23:24:45,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 8515. [2024-11-23 23:24:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4287560202043932) internal successors, (12163), 8514 states have internal predecessors, (12163), 0 states have call successors, (0), 0 states 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 23:24:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 12163 transitions. [2024-11-23 23:24:45,062 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 12163 transitions. Word has length 67 [2024-11-23 23:24:45,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:45,063 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 12163 transitions. [2024-11-23 23:24:45,063 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 23:24:45,063 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 12163 transitions. [2024-11-23 23:24:45,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-23 23:24:45,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:45,065 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 23:24:45,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:24:45,066 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:45,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:45,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1681723190, now seen corresponding path program 1 times [2024-11-23 23:24:45,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:45,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735534670] [2024-11-23 23:24:45,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:45,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:45,256 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 23:24:45,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:45,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735534670] [2024-11-23 23:24:45,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735534670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:45,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:45,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:24:45,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169769566] [2024-11-23 23:24:45,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:45,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:45,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:45,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:45,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:45,259 INFO L87 Difference]: Start difference. First operand 8515 states and 12163 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 23:24:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:45,525 INFO L93 Difference]: Finished difference Result 15495 states and 21829 transitions. [2024-11-23 23:24:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:24:45,525 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 23:24:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:45,547 INFO L225 Difference]: With dead ends: 15495 [2024-11-23 23:24:45,547 INFO L226 Difference]: Without dead ends: 8517 [2024-11-23 23:24:45,558 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 23:24:45,559 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 23:24:45,560 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 23:24:45,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2024-11-23 23:24:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 8515. [2024-11-23 23:24:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4141900622577235) internal successors, (12039), 8514 states have internal predecessors, (12039), 0 states have call successors, (0), 0 states 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 23:24:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 12039 transitions. [2024-11-23 23:24:45,916 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 12039 transitions. Word has length 68 [2024-11-23 23:24:45,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:45,916 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 12039 transitions. [2024-11-23 23:24:45,917 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 23:24:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 12039 transitions. [2024-11-23 23:24:45,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-23 23:24:45,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:45,919 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 23:24:45,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:24:45,919 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:45,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:45,920 INFO L85 PathProgramCache]: Analyzing trace with hash -469102173, now seen corresponding path program 1 times [2024-11-23 23:24:45,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:45,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242483240] [2024-11-23 23:24:45,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:45,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:46,077 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 23:24:46,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:46,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242483240] [2024-11-23 23:24:46,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242483240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:46,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:46,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:24:46,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57876021] [2024-11-23 23:24:46,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:46,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:46,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:46,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:46,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:46,081 INFO L87 Difference]: Start difference. First operand 8515 states and 12039 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 23:24:46,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:46,175 INFO L93 Difference]: Finished difference Result 11177 states and 15712 transitions. [2024-11-23 23:24:46,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:24:46,175 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 23:24:46,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:46,186 INFO L225 Difference]: With dead ends: 11177 [2024-11-23 23:24:46,187 INFO L226 Difference]: Without dead ends: 4199 [2024-11-23 23:24:46,193 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 23:24:46,195 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 23:24:46,195 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 23:24:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2024-11-23 23:24:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4190. [2024-11-23 23:24:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4188 states have (on average 1.4608404966571156) internal successors, (6118), 4189 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states 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 23:24:46,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6118 transitions. [2024-11-23 23:24:46,367 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6118 transitions. Word has length 69 [2024-11-23 23:24:46,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:46,367 INFO L471 AbstractCegarLoop]: Abstraction has 4190 states and 6118 transitions. [2024-11-23 23:24:46,367 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 23:24:46,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6118 transitions. [2024-11-23 23:24:46,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-23 23:24:46,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:46,369 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 23:24:46,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:24:46,369 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:46,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:46,369 INFO L85 PathProgramCache]: Analyzing trace with hash 422947784, now seen corresponding path program 1 times [2024-11-23 23:24:46,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:46,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285699862] [2024-11-23 23:24:46,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:46,506 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 23:24:46,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:46,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285699862] [2024-11-23 23:24:46,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285699862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:46,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:46,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:24:46,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318127525] [2024-11-23 23:24:46,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:46,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:46,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:46,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:46,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:46,507 INFO L87 Difference]: Start difference. First operand 4190 states and 6118 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 23:24:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:46,571 INFO L93 Difference]: Finished difference Result 5514 states and 7924 transitions. [2024-11-23 23:24:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:24:46,571 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 23:24:46,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:46,578 INFO L225 Difference]: With dead ends: 5514 [2024-11-23 23:24:46,578 INFO L226 Difference]: Without dead ends: 2872 [2024-11-23 23:24:46,581 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 23:24:46,583 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 23:24:46,583 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 23:24:46,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2024-11-23 23:24:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2870. [2024-11-23 23:24:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2868 states have (on average 1.496513249651325) internal successors, (4292), 2869 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states 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 23:24:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4292 transitions. [2024-11-23 23:24:46,654 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4292 transitions. Word has length 70 [2024-11-23 23:24:46,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:46,654 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 4292 transitions. [2024-11-23 23:24:46,654 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 23:24:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4292 transitions. [2024-11-23 23:24:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-23 23:24:46,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:46,656 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 23:24:46,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:24:46,657 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:46,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash 975382234, now seen corresponding path program 1 times [2024-11-23 23:24:46,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:46,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908384693] [2024-11-23 23:24:46,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:46,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:46,799 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 23:24:46,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:46,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908384693] [2024-11-23 23:24:46,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908384693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:46,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:46,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:24:46,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381471400] [2024-11-23 23:24:46,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:46,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:24:46,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:46,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:24:46,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:24:46,802 INFO L87 Difference]: Start difference. First operand 2870 states and 4292 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 23:24:46,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:46,849 INFO L93 Difference]: Finished difference Result 3534 states and 5185 transitions. [2024-11-23 23:24:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:24:46,850 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 23:24:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:46,856 INFO L225 Difference]: With dead ends: 3534 [2024-11-23 23:24:46,856 INFO L226 Difference]: Without dead ends: 2212 [2024-11-23 23:24:46,858 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 23:24:46,859 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 23:24:46,859 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 23:24:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2024-11-23 23:24:46,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2210. [2024-11-23 23:24:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2208 states have (on average 1.5353260869565217) internal successors, (3390), 2209 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states 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 23:24:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3390 transitions. [2024-11-23 23:24:46,916 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3390 transitions. Word has length 72 [2024-11-23 23:24:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:46,917 INFO L471 AbstractCegarLoop]: Abstraction has 2210 states and 3390 transitions. [2024-11-23 23:24:46,917 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 23:24:46,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3390 transitions. [2024-11-23 23:24:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-23 23:24:46,918 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:46,918 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 23:24:46,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:24:46,919 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:46,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:46,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1652203628, now seen corresponding path program 1 times [2024-11-23 23:24:46,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:46,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499203947] [2024-11-23 23:24:46,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:46,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:49,264 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 23:24:49,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:49,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499203947] [2024-11-23 23:24:49,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499203947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:24:49,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885326771] [2024-11-23 23:24:49,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:49,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:24:49,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:24:49,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:24:49,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:24:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:49,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:24:49,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:24:50,303 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 23:24:50,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:24:51,880 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 23:24:51,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885326771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:24:51,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:24:51,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-23 23:24:51,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962263473] [2024-11-23 23:24:51,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:24:51,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 23:24:51,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:51,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 23:24:51,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-11-23 23:24:51,885 INFO L87 Difference]: Start difference. First operand 2210 states and 3390 transitions. Second operand has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 23:24:56,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:56,225 INFO L93 Difference]: Finished difference Result 4574 states and 6541 transitions. [2024-11-23 23:24:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-23 23:24:56,225 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 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 23:24:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:56,235 INFO L225 Difference]: With dead ends: 4574 [2024-11-23 23:24:56,236 INFO L226 Difference]: Without dead ends: 3912 [2024-11-23 23:24:56,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=813, Invalid=3093, Unknown=0, NotChecked=0, Total=3906 [2024-11-23 23:24:56,240 INFO L435 NwaCegarLoop]: 1493 mSDtfsCounter, 21243 mSDsluCounter, 6425 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21243 SdHoareTripleChecker+Valid, 7918 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:56,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21243 Valid, 7918 Invalid, 784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:24:56,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2024-11-23 23:24:56,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3849. [2024-11-23 23:24:56,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3847 states have (on average 1.4359240966987263) internal successors, (5524), 3848 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states 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 23:24:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 5524 transitions. [2024-11-23 23:24:56,370 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 5524 transitions. Word has length 74 [2024-11-23 23:24:56,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:56,371 INFO L471 AbstractCegarLoop]: Abstraction has 3849 states and 5524 transitions. [2024-11-23 23:24:56,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 23:24:56,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 5524 transitions. [2024-11-23 23:24:56,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-23 23:24:56,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:56,373 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 23:24:56,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:24:56,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:24:56,575 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:56,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:56,575 INFO L85 PathProgramCache]: Analyzing trace with hash 117635487, now seen corresponding path program 1 times [2024-11-23 23:24:56,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:56,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941273434] [2024-11-23 23:24:56,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:56,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:57,306 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 23:24:57,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:57,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941273434] [2024-11-23 23:24:57,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941273434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:24:57,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432773928] [2024-11-23 23:24:57,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:57,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:24:57,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:24:57,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:24:57,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:24:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:57,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 23:24:57,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:24:58,649 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 23:24:58,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:25:00,214 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 23:25:00,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432773928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:25:00,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:25:00,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-23 23:25:00,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588374419] [2024-11-23 23:25:00,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:25:00,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 23:25:00,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:00,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 23:25:00,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:25:00,218 INFO L87 Difference]: Start difference. First operand 3849 states and 5524 transitions. Second operand has 32 states, 32 states have (on average 5.90625) internal successors, (189), 32 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 23:25:07,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:07,999 INFO L93 Difference]: Finished difference Result 14659 states and 19770 transitions. [2024-11-23 23:25:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-23 23:25:08,000 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.90625) internal successors, (189), 32 states have internal predecessors, (189), 0 states have call successors, (0), 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 23:25:08,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:08,030 INFO L225 Difference]: With dead ends: 14659 [2024-11-23 23:25:08,030 INFO L226 Difference]: Without dead ends: 12358 [2024-11-23 23:25:08,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3304 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1887, Invalid=9243, Unknown=0, NotChecked=0, Total=11130 [2024-11-23 23:25:08,037 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 24426 mSDsluCounter, 15607 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24426 SdHoareTripleChecker+Valid, 17114 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:08,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24426 Valid, 17114 Invalid, 1447 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 23:25:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12358 states. [2024-11-23 23:25:08,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12358 to 5622. [2024-11-23 23:25:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 5620 states have (on average 1.3905693950177935) internal successors, (7815), 5621 states have internal predecessors, (7815), 0 states have call successors, (0), 0 states 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 23:25:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 7815 transitions. [2024-11-23 23:25:08,319 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 7815 transitions. Word has length 75 [2024-11-23 23:25:08,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:08,320 INFO L471 AbstractCegarLoop]: Abstraction has 5622 states and 7815 transitions. [2024-11-23 23:25:08,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.90625) internal successors, (189), 32 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 23:25:08,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 7815 transitions. [2024-11-23 23:25:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-23 23:25:08,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:08,322 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, 1, 1] [2024-11-23 23:25:08,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:25:08,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:25:08,525 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:08,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:08,526 INFO L85 PathProgramCache]: Analyzing trace with hash 465454108, now seen corresponding path program 1 times [2024-11-23 23:25:08,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:08,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838641149] [2024-11-23 23:25:08,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:08,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:09,177 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 23:25:09,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:09,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838641149] [2024-11-23 23:25:09,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838641149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:25:09,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488167877] [2024-11-23 23:25:09,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:09,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:25:09,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:25:09,181 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:25:09,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:25:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:09,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:25:09,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:25:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:25:09,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:25:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:25:09,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488167877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:25:09,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:25:09,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2024-11-23 23:25:09,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940364663] [2024-11-23 23:25:09,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:25:09,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:25:09,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:09,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:25:09,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:25:09,966 INFO L87 Difference]: Start difference. First operand 5622 states and 7815 transitions. Second operand has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 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 23:25:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:11,983 INFO L93 Difference]: Finished difference Result 19208 states and 25035 transitions. [2024-11-23 23:25:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-23 23:25:11,984 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 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 76 [2024-11-23 23:25:11,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:12,012 INFO L225 Difference]: With dead ends: 19208 [2024-11-23 23:25:12,013 INFO L226 Difference]: Without dead ends: 15134 [2024-11-23 23:25:12,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=492, Invalid=1578, Unknown=0, NotChecked=0, Total=2070 [2024-11-23 23:25:12,019 INFO L435 NwaCegarLoop]: 1511 mSDtfsCounter, 15552 mSDsluCounter, 4861 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15552 SdHoareTripleChecker+Valid, 6372 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:12,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15552 Valid, 6372 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:25:12,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15134 states. [2024-11-23 23:25:12,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15134 to 13834. [2024-11-23 23:25:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13834 states, 13832 states have (on average 1.279786003470214) internal successors, (17702), 13833 states have internal predecessors, (17702), 0 states have call successors, (0), 0 states 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 23:25:12,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13834 states to 13834 states and 17702 transitions. [2024-11-23 23:25:12,719 INFO L78 Accepts]: Start accepts. Automaton has 13834 states and 17702 transitions. Word has length 76 [2024-11-23 23:25:12,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:12,719 INFO L471 AbstractCegarLoop]: Abstraction has 13834 states and 17702 transitions. [2024-11-23 23:25:12,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 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 23:25:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 13834 states and 17702 transitions. [2024-11-23 23:25:12,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-23 23:25:12,721 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:12,721 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 23:25:12,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:25:12,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 23:25:12,926 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:12,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:12,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1384788294, now seen corresponding path program 1 times [2024-11-23 23:25:12,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:12,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815727452] [2024-11-23 23:25:12,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:12,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:13,420 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 23:25:13,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815727452] [2024-11-23 23:25:13,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815727452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:25:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566714058] [2024-11-23 23:25:13,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:13,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:25:13,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:25:13,423 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:25:13,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:25:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:13,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:25:13,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:25:14,255 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 23:25:14,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:25:15,376 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 23:25:15,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566714058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:25:15,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:25:15,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-23 23:25:15,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085993528] [2024-11-23 23:25:15,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:25:15,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:25:15,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:15,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:25:15,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:25:15,377 INFO L87 Difference]: Start difference. First operand 13834 states and 17702 transitions. Second operand has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 23:25:16,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:25:16,777 INFO L93 Difference]: Finished difference Result 35890 states and 45223 transitions. [2024-11-23 23:25:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:25:16,777 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 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 23:25:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:25:16,826 INFO L225 Difference]: With dead ends: 35890 [2024-11-23 23:25:16,826 INFO L226 Difference]: Without dead ends: 25806 [2024-11-23 23:25:16,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:25:16,839 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 15265 mSDsluCounter, 6238 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15265 SdHoareTripleChecker+Valid, 7745 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:25:16,840 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15265 Valid, 7745 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:25:16,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25806 states. [2024-11-23 23:25:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25806 to 25466. [2024-11-23 23:25:18,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25466 states, 25464 states have (on average 1.2461514294690543) internal successors, (31732), 25465 states have internal predecessors, (31732), 0 states have call successors, (0), 0 states 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 23:25:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25466 states to 25466 states and 31732 transitions. [2024-11-23 23:25:18,300 INFO L78 Accepts]: Start accepts. Automaton has 25466 states and 31732 transitions. Word has length 76 [2024-11-23 23:25:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:25:18,301 INFO L471 AbstractCegarLoop]: Abstraction has 25466 states and 31732 transitions. [2024-11-23 23:25:18,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 23:25:18,301 INFO L276 IsEmpty]: Start isEmpty. Operand 25466 states and 31732 transitions. [2024-11-23 23:25:18,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-23 23:25:18,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:25:18,303 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 23:25:18,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:25:18,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-23 23:25:18,504 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:25:18,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:25:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash -830754321, now seen corresponding path program 1 times [2024-11-23 23:25:18,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:25:18,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139094979] [2024-11-23 23:25:18,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:18,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:25:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:19,668 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 23:25:19,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:25:19,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139094979] [2024-11-23 23:25:19,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139094979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:25:19,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195535466] [2024-11-23 23:25:19,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:25:19,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:25:19,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:25:19,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:25:19,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:25:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:25:19,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-23 23:25:19,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:25:25,598 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 23:25:25,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:25:31,431 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 23:25:31,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195535466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:25:31,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:25:31,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26, 23] total 55 [2024-11-23 23:25:31,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627740058] [2024-11-23 23:25:31,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:25:31,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-23 23:25:31,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:25:31,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-23 23:25:31,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=2566, Unknown=0, NotChecked=0, Total=2970 [2024-11-23 23:25:31,434 INFO L87 Difference]: Start difference. First operand 25466 states and 31732 transitions. Second operand has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 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 23:26:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:26:00,262 INFO L93 Difference]: Finished difference Result 75514 states and 92673 transitions. [2024-11-23 23:26:00,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-23 23:26:00,262 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 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 77 [2024-11-23 23:26:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:26:00,311 INFO L225 Difference]: With dead ends: 75514 [2024-11-23 23:26:00,311 INFO L226 Difference]: Without dead ends: 66316 [2024-11-23 23:26:00,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11079 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=5198, Invalid=25954, Unknown=0, NotChecked=0, Total=31152 [2024-11-23 23:26:00,326 INFO L435 NwaCegarLoop]: 1557 mSDtfsCounter, 24233 mSDsluCounter, 25894 mSDsCounter, 0 mSdLazyCounter, 3574 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24233 SdHoareTripleChecker+Valid, 27451 SdHoareTripleChecker+Invalid, 3707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:26:00,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24233 Valid, 27451 Invalid, 3707 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [133 Valid, 3574 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-23 23:26:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66316 states. [2024-11-23 23:26:01,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66316 to 25226. [2024-11-23 23:26:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25226 states, 25224 states have (on average 1.247779892166191) internal successors, (31474), 25225 states have internal predecessors, (31474), 0 states have call successors, (0), 0 states 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 23:26:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25226 states to 25226 states and 31474 transitions. [2024-11-23 23:26:01,485 INFO L78 Accepts]: Start accepts. Automaton has 25226 states and 31474 transitions. Word has length 77 [2024-11-23 23:26:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:26:01,486 INFO L471 AbstractCegarLoop]: Abstraction has 25226 states and 31474 transitions. [2024-11-23 23:26:01,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 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 23:26:01,486 INFO L276 IsEmpty]: Start isEmpty. Operand 25226 states and 31474 transitions. [2024-11-23 23:26:01,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-23 23:26:01,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:26:01,488 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 23:26:01,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:26:01,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 23:26:01,689 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:26:01,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:26:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash -747594897, now seen corresponding path program 1 times [2024-11-23 23:26:01,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:26:01,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806755797] [2024-11-23 23:26:01,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:26:01,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:26:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:26:06,165 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 23:26:06,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:26:06,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806755797] [2024-11-23 23:26:06,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806755797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:26:06,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229111434] [2024-11-23 23:26:06,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:26:06,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:26:06,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:26:06,169 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:26:06,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:26:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:26:06,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 23:26:06,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:26:07,277 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 23:26:07,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:26:09,418 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 23:26:09,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229111434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:26:09,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:26:09,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 12, 12] total 46 [2024-11-23 23:26:09,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494778617] [2024-11-23 23:26:09,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:26:09,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-23 23:26:09,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:26:09,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-23 23:26:09,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1889, Unknown=0, NotChecked=0, Total=2070 [2024-11-23 23:26:09,421 INFO L87 Difference]: Start difference. First operand 25226 states and 31474 transitions. Second operand has 46 states, 46 states have (on average 4.326086956521739) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 23:26:28,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:26:28,655 INFO L93 Difference]: Finished difference Result 47464 states and 58328 transitions. [2024-11-23 23:26:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-23 23:26:28,655 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.326086956521739) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 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 23:26:28,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:26:28,687 INFO L225 Difference]: With dead ends: 47464 [2024-11-23 23:26:28,687 INFO L226 Difference]: Without dead ends: 37288 [2024-11-23 23:26:28,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8182 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=4922, Invalid=20518, Unknown=0, NotChecked=0, Total=25440 [2024-11-23 23:26:28,704 INFO L435 NwaCegarLoop]: 1676 mSDtfsCounter, 21913 mSDsluCounter, 26298 mSDsCounter, 0 mSdLazyCounter, 4686 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21913 SdHoareTripleChecker+Valid, 27974 SdHoareTripleChecker+Invalid, 4832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:26:28,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21913 Valid, 27974 Invalid, 4832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [146 Valid, 4686 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-23 23:26:28,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37288 states. [2024-11-23 23:26:29,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37288 to 20708. [2024-11-23 23:26:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20708 states, 20706 states have (on average 1.2504105090311988) internal successors, (25891), 20707 states have internal predecessors, (25891), 0 states have call successors, (0), 0 states 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 23:26:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20708 states to 20708 states and 25891 transitions. [2024-11-23 23:26:29,822 INFO L78 Accepts]: Start accepts. Automaton has 20708 states and 25891 transitions. Word has length 77 [2024-11-23 23:26:29,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:26:29,823 INFO L471 AbstractCegarLoop]: Abstraction has 20708 states and 25891 transitions. [2024-11-23 23:26:29,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.326086956521739) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 23:26:29,823 INFO L276 IsEmpty]: Start isEmpty. Operand 20708 states and 25891 transitions. [2024-11-23 23:26:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-23 23:26:29,825 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:26:29,825 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 23:26:29,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:26:30,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:26:30,029 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:26:30,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:26:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1437385468, now seen corresponding path program 1 times [2024-11-23 23:26:30,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:26:30,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413465366] [2024-11-23 23:26:30,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:26:30,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:26:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:26:32,586 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 23:26:32,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:26:32,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413465366] [2024-11-23 23:26:32,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413465366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:26:32,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198833895] [2024-11-23 23:26:32,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:26:32,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:26:32,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:26:32,588 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:26:32,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:26:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:26:32,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-23 23:26:32,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:26:38,124 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 23:26:38,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:26:45,797 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 23:26:45,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198833895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:26:45,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:26:45,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 30, 26] total 75 [2024-11-23 23:26:45,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078148445] [2024-11-23 23:26:45,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:26:45,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-23 23:26:45,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:26:45,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-23 23:26:45,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=774, Invalid=4776, Unknown=0, NotChecked=0, Total=5550 [2024-11-23 23:26:45,799 INFO L87 Difference]: Start difference. First operand 20708 states and 25891 transitions. Second operand has 75 states, 75 states have (on average 2.8) internal successors, (210), 75 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:42,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:42,715 INFO L93 Difference]: Finished difference Result 58486 states and 72364 transitions. [2024-11-23 23:29:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2024-11-23 23:29:42,716 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.8) internal successors, (210), 75 states have internal predecessors, (210), 0 states have call successors, (0), 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 23:29:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:42,754 INFO L225 Difference]: With dead ends: 58486 [2024-11-23 23:29:42,755 INFO L226 Difference]: Without dead ends: 48386 [2024-11-23 23:29:42,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47986 ImplicationChecksByTransitivity, 164.9s TimeCoverageRelationStatistics Valid=16347, Invalid=100959, Unknown=0, NotChecked=0, Total=117306 [2024-11-23 23:29:42,774 INFO L435 NwaCegarLoop]: 1629 mSDtfsCounter, 25240 mSDsluCounter, 29717 mSDsCounter, 0 mSdLazyCounter, 10174 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25240 SdHoareTripleChecker+Valid, 31346 SdHoareTripleChecker+Invalid, 10384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 10174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:42,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25240 Valid, 31346 Invalid, 10384 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [210 Valid, 10174 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2024-11-23 23:29:42,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48386 states. [2024-11-23 23:29:44,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48386 to 22141. [2024-11-23 23:29:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22141 states, 22139 states have (on average 1.2488368941686616) internal successors, (27648), 22140 states have internal predecessors, (27648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22141 states to 22141 states and 27648 transitions. [2024-11-23 23:29:44,273 INFO L78 Accepts]: Start accepts. Automaton has 22141 states and 27648 transitions. Word has length 78 [2024-11-23 23:29:44,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:44,274 INFO L471 AbstractCegarLoop]: Abstraction has 22141 states and 27648 transitions. [2024-11-23 23:29:44,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.8) internal successors, (210), 75 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:44,274 INFO L276 IsEmpty]: Start isEmpty. Operand 22141 states and 27648 transitions. [2024-11-23 23:29:44,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-23 23:29:44,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:44,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:44,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 23:29:44,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-23 23:29:44,477 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:44,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:44,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1425384422, now seen corresponding path program 1 times [2024-11-23 23:29:44,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:44,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068228966] [2024-11-23 23:29:44,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:44,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:44,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:44,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068228966] [2024-11-23 23:29:44,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068228966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:44,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:44,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:29:44,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924538699] [2024-11-23 23:29:44,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:44,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:29:44,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:44,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:29:44,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:44,577 INFO L87 Difference]: Start difference. First operand 22141 states and 27648 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:50,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:50,335 INFO L93 Difference]: Finished difference Result 25147 states and 32575 transitions. [2024-11-23 23:29:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:29:50,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-23 23:29:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:50,354 INFO L225 Difference]: With dead ends: 25147 [2024-11-23 23:29:50,354 INFO L226 Difference]: Without dead ends: 23643 [2024-11-23 23:29:50,357 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 23:29:50,358 INFO L435 NwaCegarLoop]: 1236 mSDtfsCounter, 753 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:50,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1331 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-23 23:29:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23643 states. [2024-11-23 23:29:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23643 to 23643. [2024-11-23 23:29:51,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23643 states, 23641 states have (on average 1.2606911721162388) internal successors, (29804), 23642 states have internal predecessors, (29804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23643 states to 23643 states and 29804 transitions. [2024-11-23 23:29:51,665 INFO L78 Accepts]: Start accepts. Automaton has 23643 states and 29804 transitions. Word has length 87 [2024-11-23 23:29:51,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:51,666 INFO L471 AbstractCegarLoop]: Abstraction has 23643 states and 29804 transitions. [2024-11-23 23:29:51,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:51,666 INFO L276 IsEmpty]: Start isEmpty. Operand 23643 states and 29804 transitions. [2024-11-23 23:29:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-23 23:29:51,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:51,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:51,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 23:29:51,668 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:51,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:51,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1707527665, now seen corresponding path program 1 times [2024-11-23 23:29:51,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:51,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433523050] [2024-11-23 23:29:51,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:51,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:51,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:51,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433523050] [2024-11-23 23:29:51,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433523050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:51,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:51,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:29:51,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584571003] [2024-11-23 23:29:51,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:51,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:29:51,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:51,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:29:51,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:51,759 INFO L87 Difference]: Start difference. First operand 23643 states and 29804 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:57,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:57,719 INFO L93 Difference]: Finished difference Result 29655 states and 39044 transitions. [2024-11-23 23:29:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:29:57,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2024-11-23 23:29:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:57,744 INFO L225 Difference]: With dead ends: 29655 [2024-11-23 23:29:57,744 INFO L226 Difference]: Without dead ends: 26649 [2024-11-23 23:29:57,751 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 23:29:57,751 INFO L435 NwaCegarLoop]: 580 mSDtfsCounter, 813 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:57,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 587 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-23 23:29:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26649 states. [2024-11-23 23:29:59,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26649 to 26647. [2024-11-23 23:29:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26647 states, 26645 states have (on average 1.2529555263651717) internal successors, (33385), 26646 states have internal predecessors, (33385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26647 states to 26647 states and 33385 transitions. [2024-11-23 23:29:59,146 INFO L78 Accepts]: Start accepts. Automaton has 26647 states and 33385 transitions. Word has length 90 [2024-11-23 23:29:59,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:59,146 INFO L471 AbstractCegarLoop]: Abstraction has 26647 states and 33385 transitions. [2024-11-23 23:29:59,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 26647 states and 33385 transitions. [2024-11-23 23:29:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-23 23:29:59,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:59,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:59,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 23:29:59,148 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:59,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash 202248996, now seen corresponding path program 1 times [2024-11-23 23:29:59,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:59,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531668670] [2024-11-23 23:29:59,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:59,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:59,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:59,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531668670] [2024-11-23 23:29:59,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531668670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:59,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:59,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:29:59,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885176678] [2024-11-23 23:29:59,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:59,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:29:59,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:59,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:29:59,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:29:59,362 INFO L87 Difference]: Start difference. First operand 26647 states and 33385 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:05,015 INFO L93 Difference]: Finished difference Result 33408 states and 42427 transitions. [2024-11-23 23:30:05,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:30:05,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-11-23 23:30:05,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:05,038 INFO L225 Difference]: With dead ends: 33408 [2024-11-23 23:30:05,038 INFO L226 Difference]: Without dead ends: 27398 [2024-11-23 23:30:05,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:30:05,044 INFO L435 NwaCegarLoop]: 778 mSDtfsCounter, 977 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:05,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 1343 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-23 23:30:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27398 states. [2024-11-23 23:30:06,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27398 to 27398. [2024-11-23 23:30:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27398 states, 27396 states have (on average 1.2462403270550446) internal successors, (34142), 27397 states have internal predecessors, (34142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:06,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27398 states to 27398 states and 34142 transitions. [2024-11-23 23:30:06,340 INFO L78 Accepts]: Start accepts. Automaton has 27398 states and 34142 transitions. Word has length 91 [2024-11-23 23:30:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:06,340 INFO L471 AbstractCegarLoop]: Abstraction has 27398 states and 34142 transitions. [2024-11-23 23:30:06,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 27398 states and 34142 transitions. [2024-11-23 23:30:06,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 23:30:06,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:06,345 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 23:30:06,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 23:30:06,345 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:06,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1942011500, now seen corresponding path program 1 times [2024-11-23 23:30:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:06,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998235815] [2024-11-23 23:30:06,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:06,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 43 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:07,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:07,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998235815] [2024-11-23 23:30:07,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998235815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:07,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774352187] [2024-11-23 23:30:07,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:07,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:07,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:07,419 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:07,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:30:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:07,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 23:30:07,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 23 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:09,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:30:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 17 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:12,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774352187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:30:12,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:30:12,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 15] total 41 [2024-11-23 23:30:12,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342117745] [2024-11-23 23:30:12,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:30:12,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-23 23:30:12,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:12,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-23 23:30:12,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1500, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 23:30:12,698 INFO L87 Difference]: Start difference. First operand 27398 states and 34142 transitions. Second operand has 41 states, 41 states have (on average 8.634146341463415) internal successors, (354), 41 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:25,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:25,436 INFO L93 Difference]: Finished difference Result 44663 states and 55105 transitions. [2024-11-23 23:30:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-23 23:30:25,436 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 8.634146341463415) internal successors, (354), 41 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-11-23 23:30:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:25,464 INFO L225 Difference]: With dead ends: 44663 [2024-11-23 23:30:25,464 INFO L226 Difference]: Without dead ends: 35172 [2024-11-23 23:30:25,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2680 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=1697, Invalid=9015, Unknown=0, NotChecked=0, Total=10712 [2024-11-23 23:30:25,474 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 23470 mSDsluCounter, 20571 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23470 SdHoareTripleChecker+Valid, 22118 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:25,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23470 Valid, 22118 Invalid, 1738 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 23:30:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35172 states. [2024-11-23 23:30:27,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35172 to 25834. [2024-11-23 23:30:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25834 states, 25832 states have (on average 1.243922266955714) internal successors, (32133), 25833 states have internal predecessors, (32133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:27,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25834 states to 25834 states and 32133 transitions. [2024-11-23 23:30:27,066 INFO L78 Accepts]: Start accepts. Automaton has 25834 states and 32133 transitions. Word has length 124 [2024-11-23 23:30:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:27,066 INFO L471 AbstractCegarLoop]: Abstraction has 25834 states and 32133 transitions. [2024-11-23 23:30:27,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 8.634146341463415) internal successors, (354), 41 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 25834 states and 32133 transitions. [2024-11-23 23:30:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 23:30:27,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:27,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:27,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 23:30:27,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 23:30:27,270 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:27,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:27,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1684250167, now seen corresponding path program 1 times [2024-11-23 23:30:27,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:27,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606565417] [2024-11-23 23:30:27,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:27,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 32 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:28,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:28,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606565417] [2024-11-23 23:30:28,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606565417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:28,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44792544] [2024-11-23 23:30:28,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:28,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:28,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:28,397 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:28,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:30:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:28,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 23:30:28,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 35 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:29,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:30:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 32 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:31,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44792544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:30:31,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:30:31,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-23 23:30:31,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778649246] [2024-11-23 23:30:31,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:30:31,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-23 23:30:31,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:31,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-23 23:30:31,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2024-11-23 23:30:31,833 INFO L87 Difference]: Start difference. First operand 25834 states and 32133 transitions. Second operand has 27 states, 27 states have (on average 10.25925925925926) internal successors, (277), 26 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:34,819 INFO L93 Difference]: Finished difference Result 37864 states and 46950 transitions. [2024-11-23 23:30:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:30:34,819 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.25925925925926) internal successors, (277), 26 states have internal predecessors, (277), 0 states have call successors, (0), 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 23:30:34,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:34,849 INFO L225 Difference]: With dead ends: 37864 [2024-11-23 23:30:34,849 INFO L226 Difference]: Without dead ends: 26811 [2024-11-23 23:30:34,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=345, Invalid=1215, Unknown=0, NotChecked=0, Total=1560 [2024-11-23 23:30:34,861 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 14965 mSDsluCounter, 10894 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14965 SdHoareTripleChecker+Valid, 12422 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:34,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14965 Valid, 12422 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:30:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26811 states. [2024-11-23 23:30:36,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26811 to 25774. [2024-11-23 23:30:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25774 states, 25772 states have (on average 1.23738941486885) internal successors, (31890), 25773 states have internal predecessors, (31890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25774 states to 25774 states and 31890 transitions. [2024-11-23 23:30:36,793 INFO L78 Accepts]: Start accepts. Automaton has 25774 states and 31890 transitions. Word has length 125 [2024-11-23 23:30:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:36,793 INFO L471 AbstractCegarLoop]: Abstraction has 25774 states and 31890 transitions. [2024-11-23 23:30:36,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.25925925925926) internal successors, (277), 26 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 25774 states and 31890 transitions. [2024-11-23 23:30:36,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 23:30:36,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:36,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:36,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:30:36,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:36,997 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:36,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:36,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1393249079, now seen corresponding path program 1 times [2024-11-23 23:30:36,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:36,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649064303] [2024-11-23 23:30:36,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:36,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 39 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:38,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:38,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649064303] [2024-11-23 23:30:38,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649064303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:38,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661228178] [2024-11-23 23:30:38,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:38,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:38,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:38,032 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:38,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:30:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:38,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 23:30:38,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 42 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:39,502 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:30:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 39 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:41,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661228178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:30:41,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:30:41,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2024-11-23 23:30:41,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452933160] [2024-11-23 23:30:41,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:30:41,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-23 23:30:41,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:41,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-23 23:30:41,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-11-23 23:30:41,649 INFO L87 Difference]: Start difference. First operand 25774 states and 31890 transitions. Second operand has 30 states, 30 states have (on average 10.0) internal successors, (300), 29 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 23:30:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:45,530 INFO L93 Difference]: Finished difference Result 38337 states and 47259 transitions. [2024-11-23 23:30:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 23:30:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.0) internal successors, (300), 29 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 125 [2024-11-23 23:30:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:45,556 INFO L225 Difference]: With dead ends: 38337 [2024-11-23 23:30:45,556 INFO L226 Difference]: Without dead ends: 27240 [2024-11-23 23:30:45,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2024-11-23 23:30:45,569 INFO L435 NwaCegarLoop]: 1519 mSDtfsCounter, 16952 mSDsluCounter, 13826 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16952 SdHoareTripleChecker+Valid, 15345 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:45,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16952 Valid, 15345 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:30:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27240 states. [2024-11-23 23:30:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27240 to 25774. [2024-11-23 23:30:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25774 states, 25772 states have (on average 1.2306767033990378) internal successors, (31717), 25773 states have internal predecessors, (31717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:30:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25774 states to 25774 states and 31717 transitions. [2024-11-23 23:30:47,508 INFO L78 Accepts]: Start accepts. Automaton has 25774 states and 31717 transitions. Word has length 125 [2024-11-23 23:30:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:47,509 INFO L471 AbstractCegarLoop]: Abstraction has 25774 states and 31717 transitions. [2024-11-23 23:30:47,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.0) internal successors, (300), 29 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 23:30:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 25774 states and 31717 transitions. [2024-11-23 23:30:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 23:30:47,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:47,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:47,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 23:30:47,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:47,714 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:47,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash 891280809, now seen corresponding path program 1 times [2024-11-23 23:30:47,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:47,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170060120] [2024-11-23 23:30:47,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:47,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 16 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:30:48,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:48,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170060120] [2024-11-23 23:30:48,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170060120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:48,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250164400] [2024-11-23 23:30:48,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:48,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:48,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:48,847 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:48,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:30:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:49,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-23 23:30:49,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:52,129 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 23:30:52,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:30:59,995 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 23:30:59,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250164400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:30:59,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:30:59,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23, 22] total 58 [2024-11-23 23:30:59,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544306921] [2024-11-23 23:30:59,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:30:59,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-23 23:30:59,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:59,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-23 23:30:59,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=3002, Unknown=0, NotChecked=0, Total=3306 [2024-11-23 23:30:59,998 INFO L87 Difference]: Start difference. First operand 25774 states and 31717 transitions. Second operand has 58 states, 58 states have (on average 6.017241379310345) internal successors, (349), 58 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:36:40,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:40,394 INFO L93 Difference]: Finished difference Result 123785 states and 149571 transitions. [2024-11-23 23:36:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 623 states. [2024-11-23 23:36:40,394 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 6.017241379310345) internal successors, (349), 58 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-11-23 23:36:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:40,536 INFO L225 Difference]: With dead ends: 123785 [2024-11-23 23:36:40,537 INFO L226 Difference]: Without dead ends: 110916 [2024-11-23 23:36:40,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 677 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213386 ImplicationChecksByTransitivity, 322.3s TimeCoverageRelationStatistics Valid=51625, Invalid=408737, Unknown=0, NotChecked=0, Total=460362 [2024-11-23 23:36:40,561 INFO L435 NwaCegarLoop]: 1762 mSDtfsCounter, 46375 mSDsluCounter, 32108 mSDsCounter, 0 mSdLazyCounter, 7191 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46375 SdHoareTripleChecker+Valid, 33870 SdHoareTripleChecker+Invalid, 7603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 7191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:40,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46375 Valid, 33870 Invalid, 7603 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [412 Valid, 7191 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-23 23:36:40,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110916 states. [2024-11-23 23:36:47,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110916 to 71594. [2024-11-23 23:36:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71594 states, 71592 states have (on average 1.2095625209520617) internal successors, (86595), 71593 states have internal predecessors, (86595), 0 states have call successors, (0), 0 states 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 23:36:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71594 states to 71594 states and 86595 transitions. [2024-11-23 23:36:47,593 INFO L78 Accepts]: Start accepts. Automaton has 71594 states and 86595 transitions. Word has length 125 [2024-11-23 23:36:47,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:47,593 INFO L471 AbstractCegarLoop]: Abstraction has 71594 states and 86595 transitions. [2024-11-23 23:36:47,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 6.017241379310345) internal successors, (349), 58 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:36:47,593 INFO L276 IsEmpty]: Start isEmpty. Operand 71594 states and 86595 transitions. [2024-11-23 23:36:47,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 23:36:47,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:47,597 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 23:36:47,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:36:47,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-23 23:36:47,798 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:36:47,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:47,798 INFO L85 PathProgramCache]: Analyzing trace with hash 607913984, now seen corresponding path program 1 times [2024-11-23 23:36:47,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:36:47,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698455938] [2024-11-23 23:36:47,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:47,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:36:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:50,559 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 23:36:50,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:36:50,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698455938] [2024-11-23 23:36:50,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698455938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:36:50,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777916145] [2024-11-23 23:36:50,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:50,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:50,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:50,562 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:50,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebfde6e-45e2-48c0-bb2a-551f92ad4346/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:36:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:50,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-23 23:36:50,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:56,950 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 23:36:56,950 INFO L312 TraceCheckSpWp]: Computing backward predicates...