./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.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_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/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_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/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_494cef23-1c67-4675-9e91-e425ade64f67/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 20bccc5c4039b31e1359e00bb81f308547d82590fa0687937b9518c1e6a7a105 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:41:02,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:41:02,758 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:41:02,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:41:02,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:41:02,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:41:02,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:41:02,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:41:02,824 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:41:02,825 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:41:02,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:41:02,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:41:02,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:41:02,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:41:02,828 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:41:02,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:41:02,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:41:02,829 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:41:02,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:41:02,829 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:41:02,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:41:02,830 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:41:02,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:41:02,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:41:02,830 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:41:02,830 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:41:02,830 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:41:02,830 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:41:02,830 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:41:02,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:41:02,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:41:02,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:41:02,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:41:02,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:41:02,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:41:02,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:41:02,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:41:02,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:41:02,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:41:02,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:41:02,832 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:41:02,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:41:02,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:41:02,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:41:02,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:41:02,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:41:02,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:41:02,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:41:02,832 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_494cef23-1c67-4675-9e91-e425ade64f67/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 -> 20bccc5c4039b31e1359e00bb81f308547d82590fa0687937b9518c1e6a7a105 [2024-11-23 23:41:03,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:41:03,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:41:03,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:41:03,173 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:41:03,174 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:41:03,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2024-11-23 23:41:06,441 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/data/8b3ed02c8/1fdddb19a52042c398708c73c493b911/FLAG03f6241de [2024-11-23 23:41:07,153 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:41:07,154 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2024-11-23 23:41:07,192 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/data/8b3ed02c8/1fdddb19a52042c398708c73c493b911/FLAG03f6241de [2024-11-23 23:41:07,220 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/data/8b3ed02c8/1fdddb19a52042c398708c73c493b911 [2024-11-23 23:41:07,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:41:07,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:41:07,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:41:07,230 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:41:07,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:41:07,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:41:07" (1/1) ... [2024-11-23 23:41:07,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10da8d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:07, skipping insertion in model container [2024-11-23 23:41:07,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:41:07" (1/1) ... [2024-11-23 23:41:07,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:41:07,761 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_494cef23-1c67-4675-9e91-e425ade64f67/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2024-11-23 23:41:07,815 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_494cef23-1c67-4675-9e91-e425ade64f67/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2024-11-23 23:41:08,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:41:08,778 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:41:08,830 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_494cef23-1c67-4675-9e91-e425ade64f67/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2024-11-23 23:41:08,849 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_494cef23-1c67-4675-9e91-e425ade64f67/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2024-11-23 23:41:09,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:41:09,497 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:41:09,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09 WrapperNode [2024-11-23 23:41:09,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:41:09,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:41:09,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:41:09,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:41:09,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:09,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,056 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-11-23 23:41:10,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:41:10,057 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:41:10,057 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:41:10,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:41:10,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,138 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,443 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 23:41:10,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,599 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:41:10,771 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:41:10,771 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:41:10,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:41:10,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (1/1) ... [2024-11-23 23:41:10,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:41:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:41:10,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:41:10,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:41:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:41:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:41:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:41:10,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:41:11,006 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:41:11,008 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:41:18,434 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-11-23 23:41:18,434 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:41:18,498 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:41:18,503 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 23:41:18,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:41:18 BoogieIcfgContainer [2024-11-23 23:41:18,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:41:18,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:41:18,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:41:18,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:41:18,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:41:07" (1/3) ... [2024-11-23 23:41:18,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f05171c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:41:18, skipping insertion in model container [2024-11-23 23:41:18,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:09" (2/3) ... [2024-11-23 23:41:18,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f05171c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:41:18, skipping insertion in model container [2024-11-23 23:41:18,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:41:18" (3/3) ... [2024-11-23 23:41:18,523 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2024-11-23 23:41:18,547 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:41:18,551 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c that has 1 procedures, 873 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-23 23:41:18,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:41:18,712 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;@9dffb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:41:18,713 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 23:41:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-23 23:41:18,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:18,737 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] [2024-11-23 23:41:18,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:18,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1661669358, now seen corresponding path program 1 times [2024-11-23 23:41:18,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:18,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510611472] [2024-11-23 23:41:18,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:18,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:19,075 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 23:41:19,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510611472] [2024-11-23 23:41:19,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510611472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:19,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:19,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:41:19,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946164765] [2024-11-23 23:41:19,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:19,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:41:19,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:19,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:41:19,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:41:19,122 INFO L87 Difference]: Start difference. First operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:19,259 INFO L93 Difference]: Finished difference Result 1724 states and 3276 transitions. [2024-11-23 23:41:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:41:19,261 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-23 23:41:19,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:19,276 INFO L225 Difference]: With dead ends: 1724 [2024-11-23 23:41:19,277 INFO L226 Difference]: Without dead ends: 807 [2024-11-23 23:41:19,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:41:19,288 INFO L435 NwaCegarLoop]: 1592 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:19,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-11-23 23:41:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-11-23 23:41:19,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8944099378881987) internal successors, (1525), 806 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:19,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1525 transitions. [2024-11-23 23:41:19,432 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1525 transitions. Word has length 21 [2024-11-23 23:41:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:19,433 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1525 transitions. [2024-11-23 23:41:19,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1525 transitions. [2024-11-23 23:41:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-23 23:41:19,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:19,437 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] [2024-11-23 23:41:19,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:41:19,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:19,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434260, now seen corresponding path program 1 times [2024-11-23 23:41:19,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:19,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575403610] [2024-11-23 23:41:19,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:19,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:19,829 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 23:41:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:19,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575403610] [2024-11-23 23:41:19,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575403610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:19,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:19,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:41:19,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612849997] [2024-11-23 23:41:19,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:19,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:41:19,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:19,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:41:19,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:41:19,834 INFO L87 Difference]: Start difference. First operand 807 states and 1525 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:20,041 INFO L93 Difference]: Finished difference Result 873 states and 1625 transitions. [2024-11-23 23:41:20,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:41:20,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-23 23:41:20,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:20,048 INFO L225 Difference]: With dead ends: 873 [2024-11-23 23:41:20,048 INFO L226 Difference]: Without dead ends: 838 [2024-11-23 23:41:20,052 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 23:41:20,053 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 47 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:20,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6062 Invalid, 37 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:41:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-23 23:41:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 807. [2024-11-23 23:41:20,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8745341614906832) internal successors, (1509), 806 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1509 transitions. [2024-11-23 23:41:20,091 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1509 transitions. Word has length 21 [2024-11-23 23:41:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:20,092 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1509 transitions. [2024-11-23 23:41:20,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1509 transitions. [2024-11-23 23:41:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-23 23:41:20,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:20,093 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] [2024-11-23 23:41:20,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:41:20,094 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:20,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2102639597, now seen corresponding path program 1 times [2024-11-23 23:41:20,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:20,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623844601] [2024-11-23 23:41:20,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:20,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:20,253 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 23:41:20,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:20,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623844601] [2024-11-23 23:41:20,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623844601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:20,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:20,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:41:20,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025763099] [2024-11-23 23:41:20,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:20,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:41:20,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:20,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:41:20,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:41:20,256 INFO L87 Difference]: Start difference. First operand 807 states and 1509 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:25,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:25,704 INFO L93 Difference]: Finished difference Result 2311 states and 4382 transitions. [2024-11-23 23:41:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:41:25,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-11-23 23:41:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:25,717 INFO L225 Difference]: With dead ends: 2311 [2024-11-23 23:41:25,718 INFO L226 Difference]: Without dead ends: 1558 [2024-11-23 23:41:25,722 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 23:41:25,725 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 909 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:25,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 185 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-23 23:41:25,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2024-11-23 23:41:25,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1558. [2024-11-23 23:41:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1556 states have (on average 1.8303341902313626) internal successors, (2848), 1557 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2848 transitions. [2024-11-23 23:41:25,800 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2848 transitions. Word has length 30 [2024-11-23 23:41:25,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:25,801 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 2848 transitions. [2024-11-23 23:41:25,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2848 transitions. [2024-11-23 23:41:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-23 23:41:25,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:25,804 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] [2024-11-23 23:41:25,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:41:25,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:25,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash 904930012, now seen corresponding path program 1 times [2024-11-23 23:41:25,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:25,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739334409] [2024-11-23 23:41:25,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:25,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:26,015 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 23:41:26,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739334409] [2024-11-23 23:41:26,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739334409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:26,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:26,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:41:26,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834035765] [2024-11-23 23:41:26,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:26,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:41:26,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:26,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:41:26,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:41:26,018 INFO L87 Difference]: Start difference. First operand 1558 states and 2848 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:26,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:26,175 INFO L93 Difference]: Finished difference Result 1744 states and 3136 transitions. [2024-11-23 23:41:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:41:26,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-11-23 23:41:26,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:26,184 INFO L225 Difference]: With dead ends: 1744 [2024-11-23 23:41:26,184 INFO L226 Difference]: Without dead ends: 1713 [2024-11-23 23:41:26,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:41:26,186 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 4627 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:26,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 1775 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:41:26,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2024-11-23 23:41:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1587. [2024-11-23 23:41:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1585 states have (on average 1.825236593059937) internal successors, (2893), 1586 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2893 transitions. [2024-11-23 23:41:26,240 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2893 transitions. Word has length 36 [2024-11-23 23:41:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:26,241 INFO L471 AbstractCegarLoop]: Abstraction has 1587 states and 2893 transitions. [2024-11-23 23:41:26,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2893 transitions. [2024-11-23 23:41:26,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 23:41:26,246 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:26,246 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:41:26,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:41:26,247 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:26,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:26,248 INFO L85 PathProgramCache]: Analyzing trace with hash 638646444, now seen corresponding path program 1 times [2024-11-23 23:41:26,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:26,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135497601] [2024-11-23 23:41:26,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:26,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:26,398 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 23:41:26,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:26,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135497601] [2024-11-23 23:41:26,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135497601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:26,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:26,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:41:26,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778993093] [2024-11-23 23:41:26,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:26,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:41:26,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:26,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:41:26,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:41:26,402 INFO L87 Difference]: Start difference. First operand 1587 states and 2893 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:26,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:26,450 INFO L93 Difference]: Finished difference Result 1696 states and 3060 transitions. [2024-11-23 23:41:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:41:26,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-23 23:41:26,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:26,461 INFO L225 Difference]: With dead ends: 1696 [2024-11-23 23:41:26,462 INFO L226 Difference]: Without dead ends: 1636 [2024-11-23 23:41:26,463 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 23:41:26,465 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1549 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 23:41:26,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:26,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-11-23 23:41:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-11-23 23:41:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.8155637254901962) internal successors, (2963), 1633 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2963 transitions. [2024-11-23 23:41:26,518 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2963 transitions. Word has length 38 [2024-11-23 23:41:26,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:26,518 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2963 transitions. [2024-11-23 23:41:26,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2963 transitions. [2024-11-23 23:41:26,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 23:41:26,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:26,519 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:41:26,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:41:26,520 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:26,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:26,520 INFO L85 PathProgramCache]: Analyzing trace with hash 705139956, now seen corresponding path program 1 times [2024-11-23 23:41:26,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:26,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741064245] [2024-11-23 23:41:26,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:26,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:26,838 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 23:41:26,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:26,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741064245] [2024-11-23 23:41:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741064245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:41:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035543131] [2024-11-23 23:41:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:26,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:41:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:26,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:41:26,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:41:26,840 INFO L87 Difference]: Start difference. First operand 1634 states and 2963 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:26,960 INFO L93 Difference]: Finished difference Result 1743 states and 3127 transitions. [2024-11-23 23:41:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:41:26,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-23 23:41:26,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:26,975 INFO L225 Difference]: With dead ends: 1743 [2024-11-23 23:41:26,975 INFO L226 Difference]: Without dead ends: 1636 [2024-11-23 23:41:26,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:41:26,976 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 4417 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4417 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:26,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4417 Valid, 1592 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-11-23 23:41:27,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-11-23 23:41:27,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.8143382352941178) internal successors, (2961), 1633 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2961 transitions. [2024-11-23 23:41:27,033 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2961 transitions. Word has length 38 [2024-11-23 23:41:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:27,034 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2961 transitions. [2024-11-23 23:41:27,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2961 transitions. [2024-11-23 23:41:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 23:41:27,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:27,035 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:41:27,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:41:27,036 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:27,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash -30221064, now seen corresponding path program 1 times [2024-11-23 23:41:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:27,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66233709] [2024-11-23 23:41:27,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:27,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:27,263 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 23:41:27,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66233709] [2024-11-23 23:41:27,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66233709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:27,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:27,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:41:27,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584101392] [2024-11-23 23:41:27,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:27,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:41:27,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:27,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:41:27,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:41:27,265 INFO L87 Difference]: Start difference. First operand 1634 states and 2961 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:27,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:27,329 INFO L93 Difference]: Finished difference Result 1642 states and 2970 transitions. [2024-11-23 23:41:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:41:27,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-23 23:41:27,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:27,338 INFO L225 Difference]: With dead ends: 1642 [2024-11-23 23:41:27,338 INFO L226 Difference]: Without dead ends: 1640 [2024-11-23 23:41:27,339 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 23:41:27,340 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6015 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 23:41:27,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6015 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-11-23 23:41:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2024-11-23 23:41:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1638 states have (on average 1.8107448107448108) internal successors, (2966), 1639 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2966 transitions. [2024-11-23 23:41:27,391 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2966 transitions. Word has length 39 [2024-11-23 23:41:27,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:27,392 INFO L471 AbstractCegarLoop]: Abstraction has 1640 states and 2966 transitions. [2024-11-23 23:41:27,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:27,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2966 transitions. [2024-11-23 23:41:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-23 23:41:27,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:27,393 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] [2024-11-23 23:41:27,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:41:27,393 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:27,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1276756908, now seen corresponding path program 1 times [2024-11-23 23:41:27,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:27,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755089396] [2024-11-23 23:41:27,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:27,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:27,491 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 23:41:27,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:27,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755089396] [2024-11-23 23:41:27,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755089396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:27,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:27,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:41:27,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628406441] [2024-11-23 23:41:27,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:27,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:41:27,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:27,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:41:27,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:41:27,493 INFO L87 Difference]: Start difference. First operand 1640 states and 2966 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:27,541 INFO L93 Difference]: Finished difference Result 1850 states and 3270 transitions. [2024-11-23 23:41:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:41:27,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-23 23:41:27,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:27,549 INFO L225 Difference]: With dead ends: 1850 [2024-11-23 23:41:27,549 INFO L226 Difference]: Without dead ends: 1737 [2024-11-23 23:41:27,550 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 23:41:27,551 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1588 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 23:41:27,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2024-11-23 23:41:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1735. [2024-11-23 23:41:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1733 states have (on average 1.7882285054818234) internal successors, (3099), 1734 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 3099 transitions. [2024-11-23 23:41:27,610 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 3099 transitions. Word has length 40 [2024-11-23 23:41:27,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:27,610 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 3099 transitions. [2024-11-23 23:41:27,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:27,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 3099 transitions. [2024-11-23 23:41:27,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-23 23:41:27,611 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:27,611 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] [2024-11-23 23:41:27,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:41:27,612 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:27,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:27,612 INFO L85 PathProgramCache]: Analyzing trace with hash 504175956, now seen corresponding path program 1 times [2024-11-23 23:41:27,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:27,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251115770] [2024-11-23 23:41:27,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:27,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:27,751 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 23:41:27,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:27,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251115770] [2024-11-23 23:41:27,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251115770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:27,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:27,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:41:27,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693859834] [2024-11-23 23:41:27,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:27,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:41:27,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:27,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:41:27,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:41:27,753 INFO L87 Difference]: Start difference. First operand 1735 states and 3099 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:27,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:27,803 INFO L93 Difference]: Finished difference Result 2119 states and 3641 transitions. [2024-11-23 23:41:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:41:27,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-23 23:41:27,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:27,815 INFO L225 Difference]: With dead ends: 2119 [2024-11-23 23:41:27,815 INFO L226 Difference]: Without dead ends: 1911 [2024-11-23 23:41:27,817 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 23:41:27,818 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 1472 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1590 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 23:41:27,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2024-11-23 23:41:27,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1909. [2024-11-23 23:41:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1907 states have (on average 1.747771368641846) internal successors, (3333), 1908 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:27,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 3333 transitions. [2024-11-23 23:41:27,883 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 3333 transitions. Word has length 40 [2024-11-23 23:41:27,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:27,883 INFO L471 AbstractCegarLoop]: Abstraction has 1909 states and 3333 transitions. [2024-11-23 23:41:27,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:27,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 3333 transitions. [2024-11-23 23:41:27,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-23 23:41:27,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:27,884 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] [2024-11-23 23:41:27,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:41:27,885 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:27,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash 938711892, now seen corresponding path program 1 times [2024-11-23 23:41:27,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:27,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75295119] [2024-11-23 23:41:27,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:27,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:27,966 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 23:41:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75295119] [2024-11-23 23:41:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75295119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:27,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:27,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:41:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599296817] [2024-11-23 23:41:27,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:27,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:41:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:27,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:41:27,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:41:27,968 INFO L87 Difference]: Start difference. First operand 1909 states and 3333 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:28,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:28,019 INFO L93 Difference]: Finished difference Result 2332 states and 3931 transitions. [2024-11-23 23:41:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:41:28,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-23 23:41:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:28,029 INFO L225 Difference]: With dead ends: 2332 [2024-11-23 23:41:28,029 INFO L226 Difference]: Without dead ends: 2106 [2024-11-23 23:41:28,032 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 23:41:28,033 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1476 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1590 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 23:41:28,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:28,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2024-11-23 23:41:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2104. [2024-11-23 23:41:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2102 states have (on average 1.7107516650808754) internal successors, (3596), 2103 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3596 transitions. [2024-11-23 23:41:28,108 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3596 transitions. Word has length 40 [2024-11-23 23:41:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:28,108 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 3596 transitions. [2024-11-23 23:41:28,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:28,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3596 transitions. [2024-11-23 23:41:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 23:41:28,109 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:28,109 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] [2024-11-23 23:41:28,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:41:28,110 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:28,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1906548838, now seen corresponding path program 1 times [2024-11-23 23:41:28,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:28,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276381212] [2024-11-23 23:41:28,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:41:28,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:28,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276381212] [2024-11-23 23:41:28,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276381212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:28,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:28,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:41:28,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207716888] [2024-11-23 23:41:28,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:28,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:41:28,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:28,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:41:28,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:41:28,298 INFO L87 Difference]: Start difference. First operand 2104 states and 3596 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:28,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:28,459 INFO L93 Difference]: Finished difference Result 3960 states and 6148 transitions. [2024-11-23 23:41:28,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:41:28,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 56 [2024-11-23 23:41:28,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:28,474 INFO L225 Difference]: With dead ends: 3960 [2024-11-23 23:41:28,474 INFO L226 Difference]: Without dead ends: 3386 [2024-11-23 23:41:28,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:41:28,477 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3044 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:28,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3044 Valid, 3149 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:41:28,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2024-11-23 23:41:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2676. [2024-11-23 23:41:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2674 states have (on average 1.636499626028422) internal successors, (4376), 2675 states have internal predecessors, (4376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:28,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 4376 transitions. [2024-11-23 23:41:28,578 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 4376 transitions. Word has length 56 [2024-11-23 23:41:28,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:28,578 INFO L471 AbstractCegarLoop]: Abstraction has 2676 states and 4376 transitions. [2024-11-23 23:41:28,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:28,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 4376 transitions. [2024-11-23 23:41:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 23:41:28,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:28,580 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] [2024-11-23 23:41:28,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:41:28,581 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:28,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:28,581 INFO L85 PathProgramCache]: Analyzing trace with hash -125615974, now seen corresponding path program 1 times [2024-11-23 23:41:28,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:28,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124503431] [2024-11-23 23:41:28,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:28,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 23:41:28,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:28,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124503431] [2024-11-23 23:41:28,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124503431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:28,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:28,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:41:28,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692588745] [2024-11-23 23:41:28,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:28,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:41:28,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:28,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:41:28,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:41:28,798 INFO L87 Difference]: Start difference. First operand 2676 states and 4376 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:28,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:28,967 INFO L93 Difference]: Finished difference Result 4532 states and 6928 transitions. [2024-11-23 23:41:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:41:28,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 56 [2024-11-23 23:41:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:28,989 INFO L225 Difference]: With dead ends: 4532 [2024-11-23 23:41:28,990 INFO L226 Difference]: Without dead ends: 3958 [2024-11-23 23:41:28,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:41:28,997 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3048 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:28,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3048 Valid, 3155 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:41:29,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2024-11-23 23:41:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3536. [2024-11-23 23:41:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.5664968873797396) internal successors, (5536), 3535 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5536 transitions. [2024-11-23 23:41:29,133 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5536 transitions. Word has length 56 [2024-11-23 23:41:29,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:29,133 INFO L471 AbstractCegarLoop]: Abstraction has 3536 states and 5536 transitions. [2024-11-23 23:41:29,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5536 transitions. [2024-11-23 23:41:29,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 23:41:29,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:29,136 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] [2024-11-23 23:41:29,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:41:29,138 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:29,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:29,138 INFO L85 PathProgramCache]: Analyzing trace with hash 308919962, now seen corresponding path program 1 times [2024-11-23 23:41:29,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:29,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540287231] [2024-11-23 23:41:29,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:29,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:41:29,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:29,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540287231] [2024-11-23 23:41:29,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540287231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:29,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:29,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:41:29,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35412889] [2024-11-23 23:41:29,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:29,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:41:29,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:29,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:41:29,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:41:29,292 INFO L87 Difference]: Start difference. First operand 3536 states and 5536 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:29,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:29,479 INFO L93 Difference]: Finished difference Result 4792 states and 7292 transitions. [2024-11-23 23:41:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:41:29,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 56 [2024-11-23 23:41:29,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:29,509 INFO L225 Difference]: With dead ends: 4792 [2024-11-23 23:41:29,515 INFO L226 Difference]: Without dead ends: 4374 [2024-11-23 23:41:29,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:41:29,518 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3043 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:29,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3163 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2024-11-23 23:41:29,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 3952. [2024-11-23 23:41:29,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.5473417721518987) internal successors, (6112), 3951 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 6112 transitions. [2024-11-23 23:41:29,711 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 6112 transitions. Word has length 56 [2024-11-23 23:41:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:29,712 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 6112 transitions. [2024-11-23 23:41:29,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 6112 transitions. [2024-11-23 23:41:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-23 23:41:29,716 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:29,716 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] [2024-11-23 23:41:29,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:41:29,717 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:29,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:29,717 INFO L85 PathProgramCache]: Analyzing trace with hash 977738755, now seen corresponding path program 1 times [2024-11-23 23:41:29,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:29,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702023675] [2024-11-23 23:41:29,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:29,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:29,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702023675] [2024-11-23 23:41:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702023675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:29,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:29,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:41:29,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616071313] [2024-11-23 23:41:29,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:29,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:41:29,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:29,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:41:29,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:41:29,876 INFO L87 Difference]: Start difference. First operand 3952 states and 6112 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:29,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:29,982 INFO L93 Difference]: Finished difference Result 6376 states and 9422 transitions. [2024-11-23 23:41:29,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:41:29,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-11-23 23:41:29,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:29,997 INFO L225 Difference]: With dead ends: 6376 [2024-11-23 23:41:29,998 INFO L226 Difference]: Without dead ends: 3954 [2024-11-23 23:41:30,002 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 23:41:30,002 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3025 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 23:41:30,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2024-11-23 23:41:30,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3952. [2024-11-23 23:41:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.5346835443037974) internal successors, (6062), 3951 states have internal predecessors, (6062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 6062 transitions. [2024-11-23 23:41:30,145 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 6062 transitions. Word has length 57 [2024-11-23 23:41:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:30,146 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 6062 transitions. [2024-11-23 23:41:30,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:30,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 6062 transitions. [2024-11-23 23:41:30,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-23 23:41:30,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:30,148 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] [2024-11-23 23:41:30,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:41:30,149 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:30,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:30,149 INFO L85 PathProgramCache]: Analyzing trace with hash 408394290, now seen corresponding path program 1 times [2024-11-23 23:41:30,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:30,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28805487] [2024-11-23 23:41:30,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:30,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:30,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:30,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28805487] [2024-11-23 23:41:30,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28805487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:30,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:30,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:41:30,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036396454] [2024-11-23 23:41:30,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:30,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:41:30,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:30,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:41:30,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:41:30,293 INFO L87 Difference]: Start difference. First operand 3952 states and 6062 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:30,358 INFO L93 Difference]: Finished difference Result 4908 states and 7359 transitions. [2024-11-23 23:41:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:41:30,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-23 23:41:30,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:30,369 INFO L225 Difference]: With dead ends: 4908 [2024-11-23 23:41:30,371 INFO L226 Difference]: Without dead ends: 2486 [2024-11-23 23:41:30,375 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 23:41:30,376 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 23 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3022 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 23:41:30,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:30,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2024-11-23 23:41:30,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2477. [2024-11-23 23:41:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.6456565656565656) internal successors, (4073), 2476 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4073 transitions. [2024-11-23 23:41:30,449 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4073 transitions. Word has length 58 [2024-11-23 23:41:30,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:30,450 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 4073 transitions. [2024-11-23 23:41:30,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:30,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4073 transitions. [2024-11-23 23:41:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 23:41:30,451 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:30,451 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] [2024-11-23 23:41:30,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:41:30,452 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:30,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:30,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1553558485, now seen corresponding path program 1 times [2024-11-23 23:41:30,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:30,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328704363] [2024-11-23 23:41:30,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:30,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:30,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:30,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:30,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328704363] [2024-11-23 23:41:30,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328704363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:30,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:30,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:41:30,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791957548] [2024-11-23 23:41:30,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:30,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:41:30,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:30,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:41:30,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:41:30,592 INFO L87 Difference]: Start difference. First operand 2477 states and 4073 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 23:41:30,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:30,677 INFO L93 Difference]: Finished difference Result 2949 states and 4705 transitions. [2024-11-23 23:41:30,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:41:30,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 59 [2024-11-23 23:41:30,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:30,684 INFO L225 Difference]: With dead ends: 2949 [2024-11-23 23:41:30,684 INFO L226 Difference]: Without dead ends: 2011 [2024-11-23 23:41:30,686 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 23:41:30,687 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 25 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3001 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 23:41:30,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2024-11-23 23:41:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 2009. [2024-11-23 23:41:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2007 states have (on average 1.7110114598903836) internal successors, (3434), 2008 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3434 transitions. [2024-11-23 23:41:30,740 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3434 transitions. Word has length 59 [2024-11-23 23:41:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:30,740 INFO L471 AbstractCegarLoop]: Abstraction has 2009 states and 3434 transitions. [2024-11-23 23:41:30,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 23:41:30,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3434 transitions. [2024-11-23 23:41:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-23 23:41:30,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:30,744 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] [2024-11-23 23:41:30,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:41:30,745 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:30,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1066169817, now seen corresponding path program 1 times [2024-11-23 23:41:30,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:30,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990802194] [2024-11-23 23:41:30,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:30,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:41:30,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:30,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990802194] [2024-11-23 23:41:30,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990802194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:41:30,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32213689] [2024-11-23 23:41:30,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:30,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:41:30,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:41:30,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:41:30,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:41:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:31,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:41:31,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:41:31,793 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 23:41:31,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:41:33,074 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 23:41:33,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32213689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:41:33,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:41:33,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-11-23 23:41:33,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065963270] [2024-11-23 23:41:33,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:41:33,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:41:33,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:33,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:41:33,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:41:33,077 INFO L87 Difference]: Start difference. First operand 2009 states and 3434 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:34,291 INFO L93 Difference]: Finished difference Result 3490 states and 5347 transitions. [2024-11-23 23:41:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 23:41:34,292 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 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 61 [2024-11-23 23:41:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:34,300 INFO L225 Difference]: With dead ends: 3490 [2024-11-23 23:41:34,300 INFO L226 Difference]: Without dead ends: 3020 [2024-11-23 23:41:34,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 23:41:34,303 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 15564 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15564 SdHoareTripleChecker+Valid, 4639 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:34,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15564 Valid, 4639 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:41:34,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2024-11-23 23:41:34,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2880. [2024-11-23 23:41:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2878 states have (on average 1.5639332870048646) internal successors, (4501), 2879 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:34,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4501 transitions. [2024-11-23 23:41:34,398 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4501 transitions. Word has length 61 [2024-11-23 23:41:34,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:34,398 INFO L471 AbstractCegarLoop]: Abstraction has 2880 states and 4501 transitions. [2024-11-23 23:41:34,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4501 transitions. [2024-11-23 23:41:34,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 23:41:34,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:34,400 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] [2024-11-23 23:41:34,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:41:34,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 23:41:34,601 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:34,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:34,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2045594482, now seen corresponding path program 1 times [2024-11-23 23:41:34,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:34,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333439584] [2024-11-23 23:41:34,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:34,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:35,286 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 23:41:35,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:35,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333439584] [2024-11-23 23:41:35,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333439584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:41:35,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517245930] [2024-11-23 23:41:35,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:35,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:41:35,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:41:35,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:41:35,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:41:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:35,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 23:41:35,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:41:36,110 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 23:41:36,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:41:37,264 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 23:41:37,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517245930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:41:37,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:41:37,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-23 23:41:37,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117951095] [2024-11-23 23:41:37,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:41:37,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 23:41:37,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:37,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 23:41:37,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:41:37,267 INFO L87 Difference]: Start difference. First operand 2880 states and 4501 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:39,217 INFO L93 Difference]: Finished difference Result 6371 states and 8980 transitions. [2024-11-23 23:41:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 23:41:39,218 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 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 62 [2024-11-23 23:41:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:39,229 INFO L225 Difference]: With dead ends: 6371 [2024-11-23 23:41:39,229 INFO L226 Difference]: Without dead ends: 5150 [2024-11-23 23:41:39,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2024-11-23 23:41:39,233 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 18135 mSDsluCounter, 4853 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18135 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:39,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18135 Valid, 6340 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:41:39,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2024-11-23 23:41:39,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 5124. [2024-11-23 23:41:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5124 states, 5122 states have (on average 1.4283483014447482) internal successors, (7316), 5123 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 7316 transitions. [2024-11-23 23:41:39,394 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 7316 transitions. Word has length 62 [2024-11-23 23:41:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:39,395 INFO L471 AbstractCegarLoop]: Abstraction has 5124 states and 7316 transitions. [2024-11-23 23:41:39,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 7316 transitions. [2024-11-23 23:41:39,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 23:41:39,396 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:39,396 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:41:39,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:41:39,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 23:41:39,598 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:39,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:39,601 INFO L85 PathProgramCache]: Analyzing trace with hash -679621431, now seen corresponding path program 1 times [2024-11-23 23:41:39,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:39,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096493037] [2024-11-23 23:41:39,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:39,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:40,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:40,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096493037] [2024-11-23 23:41:40,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096493037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:41:40,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485684385] [2024-11-23 23:41:40,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:40,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:41:40,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:41:40,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:41:40,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:41:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:41,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 23:41:41,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:41:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:42,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:41:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:43,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485684385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:41:43,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:41:43,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2024-11-23 23:41:43,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017775668] [2024-11-23 23:41:43,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:41:43,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-23 23:41:43,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:43,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-23 23:41:43,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-11-23 23:41:43,570 INFO L87 Difference]: Start difference. First operand 5124 states and 7316 transitions. Second operand has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:45,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:45,925 INFO L93 Difference]: Finished difference Result 11908 states and 16167 transitions. [2024-11-23 23:41:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 23:41:45,925 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 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 63 [2024-11-23 23:41:45,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:45,950 INFO L225 Difference]: With dead ends: 11908 [2024-11-23 23:41:45,950 INFO L226 Difference]: Without dead ends: 10404 [2024-11-23 23:41:45,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=548, Invalid=2104, Unknown=0, NotChecked=0, Total=2652 [2024-11-23 23:41:45,956 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 11683 mSDsluCounter, 13608 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11683 SdHoareTripleChecker+Valid, 15107 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:45,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11683 Valid, 15107 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:41:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10404 states. [2024-11-23 23:41:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10404 to 4691. [2024-11-23 23:41:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 4689 states have (on average 1.4440179142674343) internal successors, (6771), 4690 states have internal predecessors, (6771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 6771 transitions. [2024-11-23 23:41:46,173 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 6771 transitions. Word has length 63 [2024-11-23 23:41:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:46,174 INFO L471 AbstractCegarLoop]: Abstraction has 4691 states and 6771 transitions. [2024-11-23 23:41:46,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:41:46,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 6771 transitions. [2024-11-23 23:41:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 23:41:46,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:46,176 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:41:46,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:41:46,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:41:46,380 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:46,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:46,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1861102501, now seen corresponding path program 1 times [2024-11-23 23:41:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:46,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717980135] [2024-11-23 23:41:46,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:46,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:47,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:47,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717980135] [2024-11-23 23:41:47,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717980135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:41:47,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640727245] [2024-11-23 23:41:47,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:47,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:41:47,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:41:47,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:41:47,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:41:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:47,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-23 23:41:47,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:41:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:50,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:41:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:41:53,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640727245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:41:53,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:41:53,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 18] total 46 [2024-11-23 23:41:53,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277028555] [2024-11-23 23:41:53,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:41:53,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-23 23:41:53,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:53,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-23 23:41:53,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1791, Unknown=0, NotChecked=0, Total=2070 [2024-11-23 23:41:53,891 INFO L87 Difference]: Start difference. First operand 4691 states and 6771 transitions. Second operand has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:09,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:09,506 INFO L93 Difference]: Finished difference Result 9442 states and 12754 transitions. [2024-11-23 23:42:09,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-23 23:42:09,506 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 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 63 [2024-11-23 23:42:09,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:09,523 INFO L225 Difference]: With dead ends: 9442 [2024-11-23 23:42:09,523 INFO L226 Difference]: Without dead ends: 7086 [2024-11-23 23:42:09,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4079 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=2799, Invalid=11007, Unknown=0, NotChecked=0, Total=13806 [2024-11-23 23:42:09,530 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 17935 mSDsluCounter, 14790 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17935 SdHoareTripleChecker+Valid, 16323 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:09,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17935 Valid, 16323 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 23:42:09,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7086 states. [2024-11-23 23:42:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7086 to 5864. [2024-11-23 23:42:09,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5862 states have (on average 1.4097577618560218) internal successors, (8264), 5863 states have internal predecessors, (8264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 8264 transitions. [2024-11-23 23:42:09,822 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 8264 transitions. Word has length 63 [2024-11-23 23:42:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:09,822 INFO L471 AbstractCegarLoop]: Abstraction has 5864 states and 8264 transitions. [2024-11-23 23:42:09,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:09,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 8264 transitions. [2024-11-23 23:42:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 23:42:09,824 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:09,825 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:09,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:42:10,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:10,026 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:10,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:10,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1874586857, now seen corresponding path program 1 times [2024-11-23 23:42:10,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:10,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875072130] [2024-11-23 23:42:10,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:10,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:42:10,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:10,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875072130] [2024-11-23 23:42:10,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875072130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:42:10,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:42:10,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:42:10,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787865666] [2024-11-23 23:42:10,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:42:10,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:42:10,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:10,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:42:10,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:42:10,252 INFO L87 Difference]: Start difference. First operand 5864 states and 8264 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:17,803 INFO L93 Difference]: Finished difference Result 9621 states and 15154 transitions. [2024-11-23 23:42:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:42:17,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2024-11-23 23:42:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:17,813 INFO L225 Difference]: With dead ends: 9621 [2024-11-23 23:42:17,813 INFO L226 Difference]: Without dead ends: 8117 [2024-11-23 23:42:17,816 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 23:42:17,817 INFO L435 NwaCegarLoop]: 763 mSDtfsCounter, 2315 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 6302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1148 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:17,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2315 Valid, 781 Invalid, 6302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1148 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-23 23:42:17,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8117 states. [2024-11-23 23:42:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8117 to 8117. [2024-11-23 23:42:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8117 states, 8115 states have (on average 1.403943314849045) internal successors, (11393), 8116 states have internal predecessors, (11393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:18,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8117 states to 8117 states and 11393 transitions. [2024-11-23 23:42:18,200 INFO L78 Accepts]: Start accepts. Automaton has 8117 states and 11393 transitions. Word has length 99 [2024-11-23 23:42:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:18,200 INFO L471 AbstractCegarLoop]: Abstraction has 8117 states and 11393 transitions. [2024-11-23 23:42:18,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand 8117 states and 11393 transitions. [2024-11-23 23:42:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-23 23:42:18,205 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:18,205 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:18,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 23:42:18,205 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:18,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:18,206 INFO L85 PathProgramCache]: Analyzing trace with hash 472036910, now seen corresponding path program 1 times [2024-11-23 23:42:18,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:18,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660207107] [2024-11-23 23:42:18,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:18,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:42:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660207107] [2024-11-23 23:42:18,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660207107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:42:18,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:42:18,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:42:18,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209266315] [2024-11-23 23:42:18,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:42:18,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:42:18,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:18,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:42:18,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:42:18,302 INFO L87 Difference]: Start difference. First operand 8117 states and 11393 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:22,415 INFO L93 Difference]: Finished difference Result 14878 states and 22445 transitions. [2024-11-23 23:42:22,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:42:22,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 101 [2024-11-23 23:42:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:22,434 INFO L225 Difference]: With dead ends: 14878 [2024-11-23 23:42:22,434 INFO L226 Difference]: Without dead ends: 11121 [2024-11-23 23:42:22,438 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 23:42:22,440 INFO L435 NwaCegarLoop]: 537 mSDtfsCounter, 795 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:22,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 544 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-23 23:42:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11121 states. [2024-11-23 23:42:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11121 to 11121. [2024-11-23 23:42:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11121 states, 11119 states have (on average 1.35956470905657) internal successors, (15117), 11120 states have internal predecessors, (15117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11121 states to 11121 states and 15117 transitions. [2024-11-23 23:42:22,931 INFO L78 Accepts]: Start accepts. Automaton has 11121 states and 15117 transitions. Word has length 101 [2024-11-23 23:42:22,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:22,931 INFO L471 AbstractCegarLoop]: Abstraction has 11121 states and 15117 transitions. [2024-11-23 23:42:22,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:22,932 INFO L276 IsEmpty]: Start isEmpty. Operand 11121 states and 15117 transitions. [2024-11-23 23:42:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 23:42:22,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:22,938 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:42:22,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 23:42:22,938 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:22,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:22,939 INFO L85 PathProgramCache]: Analyzing trace with hash 268330733, now seen corresponding path program 1 times [2024-11-23 23:42:22,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:22,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464126883] [2024-11-23 23:42:22,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:22,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:42:24,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:24,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464126883] [2024-11-23 23:42:24,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464126883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:24,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313968975] [2024-11-23 23:42:24,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:24,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:24,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:42:24,029 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:42:24,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:42:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:24,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 23:42:24,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:42:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:42:24,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:42:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:42:24,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313968975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:42:24,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:42:24,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 5] total 23 [2024-11-23 23:42:24,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71531190] [2024-11-23 23:42:24,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:42:24,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 23:42:24,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:24,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 23:42:24,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:42:24,907 INFO L87 Difference]: Start difference. First operand 11121 states and 15117 transitions. Second operand has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:29,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:29,951 INFO L93 Difference]: Finished difference Result 21463 states and 27831 transitions. [2024-11-23 23:42:29,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-23 23:42:29,951 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 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 103 [2024-11-23 23:42:29,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:29,976 INFO L225 Difference]: With dead ends: 21463 [2024-11-23 23:42:29,976 INFO L226 Difference]: Without dead ends: 17360 [2024-11-23 23:42:29,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3467 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1454, Invalid=9052, Unknown=0, NotChecked=0, Total=10506 [2024-11-23 23:42:29,984 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 14027 mSDsluCounter, 11688 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14027 SdHoareTripleChecker+Valid, 13262 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:29,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14027 Valid, 13262 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:42:29,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17360 states. [2024-11-23 23:42:30,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17360 to 14707. [2024-11-23 23:42:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14707 states, 14705 states have (on average 1.3103026181570894) internal successors, (19268), 14706 states have internal predecessors, (19268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14707 states to 14707 states and 19268 transitions. [2024-11-23 23:42:30,599 INFO L78 Accepts]: Start accepts. Automaton has 14707 states and 19268 transitions. Word has length 103 [2024-11-23 23:42:30,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:30,600 INFO L471 AbstractCegarLoop]: Abstraction has 14707 states and 19268 transitions. [2024-11-23 23:42:30,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:30,600 INFO L276 IsEmpty]: Start isEmpty. Operand 14707 states and 19268 transitions. [2024-11-23 23:42:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 23:42:30,603 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:30,603 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:42:30,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:42:30,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 23:42:30,804 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:30,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:30,805 INFO L85 PathProgramCache]: Analyzing trace with hash 159932591, now seen corresponding path program 1 times [2024-11-23 23:42:30,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:30,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458476225] [2024-11-23 23:42:30,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:30,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 33 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:42:32,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:32,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458476225] [2024-11-23 23:42:32,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458476225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:32,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993974066] [2024-11-23 23:42:32,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:32,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:32,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:42:32,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:42:32,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:42:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:32,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:42:32,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:42:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 19 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:42:33,712 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:42:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:42:36,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993974066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:42:36,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:42:36,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 38 [2024-11-23 23:42:36,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461264476] [2024-11-23 23:42:36,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:42:36,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-23 23:42:36,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:36,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-23 23:42:36,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2024-11-23 23:42:36,156 INFO L87 Difference]: Start difference. First operand 14707 states and 19268 transitions. Second operand has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:46,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:46,547 INFO L93 Difference]: Finished difference Result 30186 states and 38102 transitions. [2024-11-23 23:42:46,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-23 23:42:46,548 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 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 103 [2024-11-23 23:42:46,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:46,576 INFO L225 Difference]: With dead ends: 30186 [2024-11-23 23:42:46,576 INFO L226 Difference]: Without dead ends: 25313 [2024-11-23 23:42:46,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=3517, Invalid=16789, Unknown=0, NotChecked=0, Total=20306 [2024-11-23 23:42:46,589 INFO L435 NwaCegarLoop]: 1605 mSDtfsCounter, 24513 mSDsluCounter, 23918 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24513 SdHoareTripleChecker+Valid, 25523 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:46,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24513 Valid, 25523 Invalid, 2332 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 23:42:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25313 states. [2024-11-23 23:42:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25313 to 18297. [2024-11-23 23:42:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18297 states, 18295 states have (on average 1.2861437551243509) internal successors, (23530), 18296 states have internal predecessors, (23530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18297 states to 18297 states and 23530 transitions. [2024-11-23 23:42:47,520 INFO L78 Accepts]: Start accepts. Automaton has 18297 states and 23530 transitions. Word has length 103 [2024-11-23 23:42:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:47,520 INFO L471 AbstractCegarLoop]: Abstraction has 18297 states and 23530 transitions. [2024-11-23 23:42:47,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:42:47,521 INFO L276 IsEmpty]: Start isEmpty. Operand 18297 states and 23530 transitions. [2024-11-23 23:42:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 23:42:47,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:47,525 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:47,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 23:42:47,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-23 23:42:47,729 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:47,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:47,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1648355578, now seen corresponding path program 1 times [2024-11-23 23:42:47,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:47,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151031687] [2024-11-23 23:42:47,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:47,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 23:42:49,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:49,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151031687] [2024-11-23 23:42:49,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151031687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:49,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129790347] [2024-11-23 23:42:49,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:49,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:49,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:42:49,303 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:42:49,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:42:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:49,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-23 23:42:49,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:42:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:42:52,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:42:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:42:57,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129790347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:42:57,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:42:57,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 22] total 60 [2024-11-23 23:42:57,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72917605] [2024-11-23 23:42:57,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:42:57,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-23 23:42:57,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:57,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-23 23:42:57,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=3185, Unknown=0, NotChecked=0, Total=3540 [2024-11-23 23:42:57,203 INFO L87 Difference]: Start difference. First operand 18297 states and 23530 transitions. Second operand has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:41,320 INFO L93 Difference]: Finished difference Result 27564 states and 34700 transitions. [2024-11-23 23:43:41,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-11-23 23:43:41,321 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 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 104 [2024-11-23 23:43:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:41,348 INFO L225 Difference]: With dead ends: 27564 [2024-11-23 23:43:41,348 INFO L226 Difference]: Without dead ends: 23456 [2024-11-23 23:43:41,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14376 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=6621, Invalid=39819, Unknown=0, NotChecked=0, Total=46440 [2024-11-23 23:43:41,361 INFO L435 NwaCegarLoop]: 1643 mSDtfsCounter, 22791 mSDsluCounter, 30579 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22791 SdHoareTripleChecker+Valid, 32222 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:41,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22791 Valid, 32222 Invalid, 3455 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 3317 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-23 23:43:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23456 states. [2024-11-23 23:43:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23456 to 22543. [2024-11-23 23:43:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22543 states, 22541 states have (on average 1.2691539860698282) internal successors, (28608), 22542 states have internal predecessors, (28608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22543 states to 22543 states and 28608 transitions. [2024-11-23 23:43:42,590 INFO L78 Accepts]: Start accepts. Automaton has 22543 states and 28608 transitions. Word has length 104 [2024-11-23 23:43:42,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:42,591 INFO L471 AbstractCegarLoop]: Abstraction has 22543 states and 28608 transitions. [2024-11-23 23:43:42,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:43:42,591 INFO L276 IsEmpty]: Start isEmpty. Operand 22543 states and 28608 transitions. [2024-11-23 23:43:42,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 23:43:42,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:42,594 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 23:43:42,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:43:42,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-23 23:43:42,795 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:43:42,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:42,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1812137019, now seen corresponding path program 1 times [2024-11-23 23:43:42,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:43:42,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767475157] [2024-11-23 23:43:42,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:42,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:43:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:45,191 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:43:45,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:43:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767475157] [2024-11-23 23:43:45,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767475157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:43:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268200145] [2024-11-23 23:43:45,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:45,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:43:45,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:43:45,194 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:43:45,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:43:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:45,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:43:45,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:43:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 21 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:43:47,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:43:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:43:49,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268200145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:43:49,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:43:49,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 14] total 52 [2024-11-23 23:43:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091355382] [2024-11-23 23:43:49,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:43:49,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-23 23:43:49,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:43:49,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-23 23:43:49,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2470, Unknown=0, NotChecked=0, Total=2652 [2024-11-23 23:43:49,095 INFO L87 Difference]: Start difference. First operand 22543 states and 28608 transitions. Second operand has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:18,844 INFO L93 Difference]: Finished difference Result 41031 states and 50816 transitions. [2024-11-23 23:44:18,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-23 23:44:18,845 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 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 105 [2024-11-23 23:44:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:18,883 INFO L225 Difference]: With dead ends: 41031 [2024-11-23 23:44:18,883 INFO L226 Difference]: Without dead ends: 30529 [2024-11-23 23:44:18,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14627 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=6723, Invalid=38859, Unknown=0, NotChecked=0, Total=45582 [2024-11-23 23:44:18,898 INFO L435 NwaCegarLoop]: 1685 mSDtfsCounter, 23574 mSDsluCounter, 34656 mSDsCounter, 0 mSdLazyCounter, 4279 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23574 SdHoareTripleChecker+Valid, 36341 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:18,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23574 Valid, 36341 Invalid, 4469 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 4279 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-23 23:44:18,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30529 states. [2024-11-23 23:44:20,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30529 to 25643. [2024-11-23 23:44:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25643 states, 25641 states have (on average 1.2597792597792599) internal successors, (32302), 25642 states have internal predecessors, (32302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25643 states to 25643 states and 32302 transitions. [2024-11-23 23:44:20,209 INFO L78 Accepts]: Start accepts. Automaton has 25643 states and 32302 transitions. Word has length 105 [2024-11-23 23:44:20,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:20,209 INFO L471 AbstractCegarLoop]: Abstraction has 25643 states and 32302 transitions. [2024-11-23 23:44:20,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:20,209 INFO L276 IsEmpty]: Start isEmpty. Operand 25643 states and 32302 transitions. [2024-11-23 23:44:20,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 23:44:20,211 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:20,212 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 23:44:20,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:44:20,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:20,412 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:20,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash -867694025, now seen corresponding path program 1 times [2024-11-23 23:44:20,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:20,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086514811] [2024-11-23 23:44:20,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:20,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:21,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:21,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086514811] [2024-11-23 23:44:21,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086514811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:21,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540811641] [2024-11-23 23:44:21,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:21,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:21,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:21,840 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:21,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:44:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:21,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 23:44:21,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:25,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:28,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540811641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:44:28,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:44:28,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 52 [2024-11-23 23:44:28,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524925467] [2024-11-23 23:44:28,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:44:28,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-23 23:44:28,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:28,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-23 23:44:28,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2369, Unknown=0, NotChecked=0, Total=2652 [2024-11-23 23:44:28,911 INFO L87 Difference]: Start difference. First operand 25643 states and 32302 transitions. Second operand has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:40,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:40,315 INFO L93 Difference]: Finished difference Result 38591 states and 47975 transitions. [2024-11-23 23:44:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-23 23:44:40,316 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 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 105 [2024-11-23 23:44:40,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:40,349 INFO L225 Difference]: With dead ends: 38591 [2024-11-23 23:44:40,349 INFO L226 Difference]: Without dead ends: 27194 [2024-11-23 23:44:40,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1719, Invalid=7787, Unknown=0, NotChecked=0, Total=9506 [2024-11-23 23:44:40,363 INFO L435 NwaCegarLoop]: 1583 mSDtfsCounter, 11248 mSDsluCounter, 37352 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11248 SdHoareTripleChecker+Valid, 38935 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:40,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11248 Valid, 38935 Invalid, 2397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 23:44:40,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27194 states. [2024-11-23 23:44:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27194 to 24497. [2024-11-23 23:44:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24497 states, 24495 states have (on average 1.2574402939375382) internal successors, (30801), 24496 states have internal predecessors, (30801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24497 states to 24497 states and 30801 transitions. [2024-11-23 23:44:42,114 INFO L78 Accepts]: Start accepts. Automaton has 24497 states and 30801 transitions. Word has length 105 [2024-11-23 23:44:42,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:42,115 INFO L471 AbstractCegarLoop]: Abstraction has 24497 states and 30801 transitions. [2024-11-23 23:44:42,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:42,115 INFO L276 IsEmpty]: Start isEmpty. Operand 24497 states and 30801 transitions. [2024-11-23 23:44:42,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 23:44:42,117 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:42,118 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:44:42,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:44:42,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:42,318 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:42,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:42,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1706401868, now seen corresponding path program 1 times [2024-11-23 23:44:42,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:42,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367013261] [2024-11-23 23:44:42,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:42,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:44,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:44,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367013261] [2024-11-23 23:44:44,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367013261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:44,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160284624] [2024-11-23 23:44:44,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:44,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:44,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:44,232 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:44,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:44:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:44,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-23 23:44:44,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:47,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:53,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160284624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:44:53,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:44:53,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 19] total 61 [2024-11-23 23:44:53,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384847303] [2024-11-23 23:44:53,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:44:53,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-23 23:44:53,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:53,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-23 23:44:53,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3378, Unknown=0, NotChecked=0, Total=3660 [2024-11-23 23:44:53,838 INFO L87 Difference]: Start difference. First operand 24497 states and 30801 transitions. Second operand has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 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 23:45:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:19,741 INFO L93 Difference]: Finished difference Result 45766 states and 56323 transitions. [2024-11-23 23:45:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-23 23:45:19,743 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 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 106 [2024-11-23 23:45:19,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:19,777 INFO L225 Difference]: With dead ends: 45766 [2024-11-23 23:45:19,777 INFO L226 Difference]: Without dead ends: 41311 [2024-11-23 23:45:19,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10235 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=5074, Invalid=28598, Unknown=0, NotChecked=0, Total=33672 [2024-11-23 23:45:19,785 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 30459 mSDsluCounter, 41260 mSDsCounter, 0 mSdLazyCounter, 3963 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30459 SdHoareTripleChecker+Valid, 42886 SdHoareTripleChecker+Invalid, 4085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:19,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30459 Valid, 42886 Invalid, 4085 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 3963 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-23 23:45:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41311 states. [2024-11-23 23:45:21,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41311 to 26867. [2024-11-23 23:45:21,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26867 states, 26865 states have (on average 1.2507723804206217) internal successors, (33602), 26866 states have internal predecessors, (33602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26867 states to 26867 states and 33602 transitions. [2024-11-23 23:45:21,611 INFO L78 Accepts]: Start accepts. Automaton has 26867 states and 33602 transitions. Word has length 106 [2024-11-23 23:45:21,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:21,612 INFO L471 AbstractCegarLoop]: Abstraction has 26867 states and 33602 transitions. [2024-11-23 23:45:21,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 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 23:45:21,612 INFO L276 IsEmpty]: Start isEmpty. Operand 26867 states and 33602 transitions. [2024-11-23 23:45:21,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 23:45:21,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:21,614 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:45:21,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 23:45:21,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 23:45:21,815 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:21,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:21,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1230557169, now seen corresponding path program 1 times [2024-11-23 23:45:21,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:21,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687959927] [2024-11-23 23:45:21,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:21,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:22,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:22,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687959927] [2024-11-23 23:45:22,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687959927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:22,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17718786] [2024-11-23 23:45:22,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:22,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:22,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:23,000 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:23,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:45:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:23,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-23 23:45:23,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:26,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:45:33,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17718786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:45:33,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:45:33,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 23] total 64 [2024-11-23 23:45:33,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291428523] [2024-11-23 23:45:33,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:45:33,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-23 23:45:33,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:33,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-23 23:45:33,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2024-11-23 23:45:33,166 INFO L87 Difference]: Start difference. First operand 26867 states and 33602 transitions. Second operand has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:05,083 INFO L93 Difference]: Finished difference Result 51355 states and 63507 transitions. [2024-11-23 23:46:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-23 23:46:05,083 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 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 107 [2024-11-23 23:46:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:05,116 INFO L225 Difference]: With dead ends: 51355 [2024-11-23 23:46:05,116 INFO L226 Difference]: Without dead ends: 42815 [2024-11-23 23:46:05,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8854 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=4930, Invalid=24140, Unknown=0, NotChecked=0, Total=29070 [2024-11-23 23:46:05,124 INFO L435 NwaCegarLoop]: 1580 mSDtfsCounter, 29129 mSDsluCounter, 25855 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29129 SdHoareTripleChecker+Valid, 27435 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:05,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29129 Valid, 27435 Invalid, 2674 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [173 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 23:46:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42815 states. [2024-11-23 23:46:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42815 to 34587. [2024-11-23 23:46:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34587 states, 34585 states have (on average 1.2442677461327165) internal successors, (43033), 34586 states have internal predecessors, (43033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:07,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34587 states to 34587 states and 43033 transitions. [2024-11-23 23:46:07,664 INFO L78 Accepts]: Start accepts. Automaton has 34587 states and 43033 transitions. Word has length 107 [2024-11-23 23:46:07,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:07,664 INFO L471 AbstractCegarLoop]: Abstraction has 34587 states and 43033 transitions. [2024-11-23 23:46:07,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:07,664 INFO L276 IsEmpty]: Start isEmpty. Operand 34587 states and 43033 transitions. [2024-11-23 23:46:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 23:46:07,666 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:07,666 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 23:46:07,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:46:07,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 23:46:07,866 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:07,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:07,867 INFO L85 PathProgramCache]: Analyzing trace with hash -667025751, now seen corresponding path program 1 times [2024-11-23 23:46:07,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:07,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549032788] [2024-11-23 23:46:07,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:07,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:09,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:09,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549032788] [2024-11-23 23:46:09,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549032788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:09,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21727491] [2024-11-23 23:46:09,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:09,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:09,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:09,524 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:09,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:46:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:09,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:46:09,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:11,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:46:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:14,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21727491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:46:14,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:46:14,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 16] total 51 [2024-11-23 23:46:14,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995785383] [2024-11-23 23:46:14,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:46:14,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-23 23:46:14,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:14,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-23 23:46:14,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2319, Unknown=0, NotChecked=0, Total=2550 [2024-11-23 23:46:14,026 INFO L87 Difference]: Start difference. First operand 34587 states and 43033 transitions. Second operand has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:30,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:30,722 INFO L93 Difference]: Finished difference Result 100138 states and 122796 transitions. [2024-11-23 23:46:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-23 23:46:30,723 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 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 107 [2024-11-23 23:46:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:30,791 INFO L225 Difference]: With dead ends: 100138 [2024-11-23 23:46:30,792 INFO L226 Difference]: Without dead ends: 75727 [2024-11-23 23:46:30,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4636 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=3615, Invalid=13415, Unknown=0, NotChecked=0, Total=17030 [2024-11-23 23:46:30,807 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 27802 mSDsluCounter, 24789 mSDsCounter, 0 mSdLazyCounter, 3042 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27802 SdHoareTripleChecker+Valid, 26340 SdHoareTripleChecker+Invalid, 3154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 3042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:30,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27802 Valid, 26340 Invalid, 3154 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 3042 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-23 23:46:30,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75727 states. [2024-11-23 23:46:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75727 to 45499. [2024-11-23 23:46:34,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45499 states, 45497 states have (on average 1.2357298283403302) internal successors, (56222), 45498 states have internal predecessors, (56222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45499 states to 45499 states and 56222 transitions. [2024-11-23 23:46:35,006 INFO L78 Accepts]: Start accepts. Automaton has 45499 states and 56222 transitions. Word has length 107 [2024-11-23 23:46:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:35,007 INFO L471 AbstractCegarLoop]: Abstraction has 45499 states and 56222 transitions. [2024-11-23 23:46:35,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 45499 states and 56222 transitions. [2024-11-23 23:46:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 23:46:35,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:35,008 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 23:46:35,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 23:46:35,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:35,208 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:35,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:35,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1782264045, now seen corresponding path program 1 times [2024-11-23 23:46:35,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:35,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076894207] [2024-11-23 23:46:35,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:35,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:35,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:35,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076894207] [2024-11-23 23:46:35,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076894207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:35,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739426394] [2024-11-23 23:46:35,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:35,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:35,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:35,950 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:35,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:46:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:36,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:46:36,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 52 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:37,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:46:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:39,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739426394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:46:39,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:46:39,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 35 [2024-11-23 23:46:39,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029091246] [2024-11-23 23:46:39,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:46:39,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-23 23:46:39,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:39,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-23 23:46:39,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 23:46:39,161 INFO L87 Difference]: Start difference. First operand 45499 states and 56222 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:48,052 INFO L93 Difference]: Finished difference Result 106723 states and 129862 transitions. [2024-11-23 23:46:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 23:46:48,053 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 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 107 [2024-11-23 23:46:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:48,116 INFO L225 Difference]: With dead ends: 106723 [2024-11-23 23:46:48,116 INFO L226 Difference]: Without dead ends: 74252 [2024-11-23 23:46:48,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=868, Invalid=3164, Unknown=0, NotChecked=0, Total=4032 [2024-11-23 23:46:48,138 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 22622 mSDsluCounter, 14428 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22622 SdHoareTripleChecker+Valid, 16000 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:48,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22622 Valid, 16000 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:46:48,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74252 states. [2024-11-23 23:46:54,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74252 to 44569. [2024-11-23 23:46:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44569 states, 44567 states have (on average 1.2292503421814347) internal successors, (54784), 44568 states have internal predecessors, (54784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44569 states to 44569 states and 54784 transitions. [2024-11-23 23:46:54,539 INFO L78 Accepts]: Start accepts. Automaton has 44569 states and 54784 transitions. Word has length 107 [2024-11-23 23:46:54,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:54,539 INFO L471 AbstractCegarLoop]: Abstraction has 44569 states and 54784 transitions. [2024-11-23 23:46:54,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:46:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 44569 states and 54784 transitions. [2024-11-23 23:46:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 23:46:54,541 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:54,541 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 23:46:54,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 23:46:54,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-23 23:46:54,741 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:54,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1616506483, now seen corresponding path program 1 times [2024-11-23 23:46:54,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:54,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077289591] [2024-11-23 23:46:54,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:54,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:55,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:55,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077289591] [2024-11-23 23:46:55,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077289591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:55,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941768286] [2024-11-23 23:46:55,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:55,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:55,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:55,444 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:55,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:46:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:55,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:46:55,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:56,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:46:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:46:58,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941768286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:46:58,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:46:58,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 35 [2024-11-23 23:46:58,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051368229] [2024-11-23 23:46:58,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:46:58,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-23 23:46:58,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:58,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-23 23:46:58,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 23:46:58,507 INFO L87 Difference]: Start difference. First operand 44569 states and 54784 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:47:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:08,091 INFO L93 Difference]: Finished difference Result 95029 states and 115225 transitions. [2024-11-23 23:47:08,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-23 23:47:08,095 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 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 107 [2024-11-23 23:47:08,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:08,172 INFO L225 Difference]: With dead ends: 95029 [2024-11-23 23:47:08,172 INFO L226 Difference]: Without dead ends: 60314 [2024-11-23 23:47:08,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1412, Invalid=5068, Unknown=0, NotChecked=0, Total=6480 [2024-11-23 23:47:08,195 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 26274 mSDsluCounter, 15877 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26274 SdHoareTripleChecker+Valid, 17438 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:08,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26274 Valid, 17438 Invalid, 1158 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:47:08,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60314 states. [2024-11-23 23:47:12,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60314 to 40897. [2024-11-23 23:47:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40897 states, 40895 states have (on average 1.2342340139381343) internal successors, (50474), 40896 states have internal predecessors, (50474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:47:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40897 states to 40897 states and 50474 transitions. [2024-11-23 23:47:12,769 INFO L78 Accepts]: Start accepts. Automaton has 40897 states and 50474 transitions. Word has length 107 [2024-11-23 23:47:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:12,770 INFO L471 AbstractCegarLoop]: Abstraction has 40897 states and 50474 transitions. [2024-11-23 23:47:12,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:47:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 40897 states and 50474 transitions. [2024-11-23 23:47:12,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 23:47:12,772 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:12,772 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:47:12,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-23 23:47:12,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-23 23:47:12,973 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:12,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1360617744, now seen corresponding path program 1 times [2024-11-23 23:47:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:12,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034868152] [2024-11-23 23:47:12,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:12,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:47:14,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:14,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034868152] [2024-11-23 23:47:14,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034868152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:14,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168901605] [2024-11-23 23:47:14,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:14,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:14,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:14,921 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:47:14,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_494cef23-1c67-4675-9e91-e425ade64f67/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 23:47:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:15,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-23 23:47:15,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:47:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:47:18,929 INFO L312 TraceCheckSpWp]: Computing backward predicates...