./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:33:11,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:33:11,447 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 16:33:11,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:33:11,455 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:33:11,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:33:11,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:33:11,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:33:11,481 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 16:33:11,482 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 16:33:11,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:33:11,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:33:11,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:33:11,484 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:33:11,486 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:33:11,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:33:11,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:33:11,487 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:33:11,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:33:11,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:33:11,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:33:11,491 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:33:11,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:33:11,492 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:33:11,492 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:33:11,492 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:33:11,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:33:11,493 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:33:11,493 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:33:11,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:33:11,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 16:33:11,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:33:11,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:33:11,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:33:11,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:33:11,496 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:33:11,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:33:11,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:33:11,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:33:11,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:33:11,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:33:11,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:33:11,497 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 [2024-10-14 16:33:11,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:33:11,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:33:11,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:33:11,805 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:33:11,806 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:33:11,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2024-10-14 16:33:13,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:33:13,568 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:33:13,571 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2024-10-14 16:33:13,602 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7218c8dc2/91510e19687944d0918e9c23186a9bba/FLAG08a945bff [2024-10-14 16:33:13,828 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7218c8dc2/91510e19687944d0918e9c23186a9bba [2024-10-14 16:33:13,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:33:13,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:33:13,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:33:13,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:33:13,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:33:13,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:33:13" (1/1) ... [2024-10-14 16:33:13,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eefbb32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:13, skipping insertion in model container [2024-10-14 16:33:13,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:33:13" (1/1) ... [2024-10-14 16:33:13,887 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:33:14,243 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[33021,33034] [2024-10-14 16:33:14,382 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44124,44137] [2024-10-14 16:33:14,383 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44245,44258] [2024-10-14 16:33:14,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:33:14,408 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:33:14,453 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[33021,33034] [2024-10-14 16:33:14,523 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44124,44137] [2024-10-14 16:33:14,524 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44245,44258] [2024-10-14 16:33:14,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:33:14,570 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:33:14,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14 WrapperNode [2024-10-14 16:33:14,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:33:14,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:33:14,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:33:14,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:33:14,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,701 INFO L138 Inliner]: procedures = 176, calls = 269, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1423 [2024-10-14 16:33:14,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:33:14,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:33:14,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:33:14,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:33:14,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,732 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,796 INFO L175 MemorySlicer]: Split 253 memory accesses to 3 slices as follows [217, 2, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 54 writes are split as follows [50, 0, 4]. [2024-10-14 16:33:14,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:33:14,891 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:33:14,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:33:14,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:33:14,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (1/1) ... [2024-10-14 16:33:14,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:33:14,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:33:14,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 16:33:14,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 16:33:14,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 16:33:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 16:33:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 16:33:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 16:33:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 16:33:14,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 16:33:14,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-14 16:33:14,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-14 16:33:14,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-14 16:33:14,978 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-14 16:33:14,978 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-14 16:33:14,978 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-14 16:33:14,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 16:33:14,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:33:14,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 16:33:14,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 16:33:14,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 16:33:14,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 16:33:14,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 16:33:14,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 16:33:14,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 16:33:14,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 16:33:14,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 16:33:14,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 16:33:14,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 16:33:14,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:33:14,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:33:15,170 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:33:15,172 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:33:16,510 INFO L? ?]: Removed 309 outVars from TransFormulas that were not future-live. [2024-10-14 16:33:16,510 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:33:16,563 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:33:16,564 INFO L314 CfgBuilder]: Removed 63 assume(true) statements. [2024-10-14 16:33:16,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:16 BoogieIcfgContainer [2024-10-14 16:33:16,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:33:16,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:33:16,566 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:33:16,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:33:16,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:33:13" (1/3) ... [2024-10-14 16:33:16,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a57826b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:16, skipping insertion in model container [2024-10-14 16:33:16,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:33:14" (2/3) ... [2024-10-14 16:33:16,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a57826b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:16, skipping insertion in model container [2024-10-14 16:33:16,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:16" (3/3) ... [2024-10-14 16:33:16,575 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test7-1.i [2024-10-14 16:33:16,592 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:33:16,592 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 16:33:16,660 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:33:16,666 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;@610beedd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:33:16,666 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 16:33:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 384 states have (on average 1.6328125) internal successors, (627), 386 states have internal predecessors, (627), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:33:16,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 16:33:16,680 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:33:16,682 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:33:16,683 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:33:16,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:33:16,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1356440670, now seen corresponding path program 1 times [2024-10-14 16:33:16,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:33:16,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626807495] [2024-10-14 16:33:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:16,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:33:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:33:16,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:33:16,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626807495] [2024-10-14 16:33:16,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626807495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:33:16,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:33:16,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:33:16,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967126958] [2024-10-14 16:33:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:33:16,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:33:16,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:33:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:33:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:33:16,914 INFO L87 Difference]: Start difference. First operand has 391 states, 384 states have (on average 1.6328125) internal successors, (627), 386 states have internal predecessors, (627), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:33:16,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:33:16,998 INFO L93 Difference]: Finished difference Result 781 states and 1265 transitions. [2024-10-14 16:33:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:33:17,001 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-10-14 16:33:17,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:33:17,017 INFO L225 Difference]: With dead ends: 781 [2024-10-14 16:33:17,017 INFO L226 Difference]: Without dead ends: 389 [2024-10-14 16:33:17,021 INFO L431 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 [2024-10-14 16:33:17,027 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 16:33:17,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 561 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 16:33:17,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-10-14 16:33:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2024-10-14 16:33:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 383 states have (on average 1.4516971279373367) internal successors, (556), 384 states have internal predecessors, (556), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:33:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 562 transitions. [2024-10-14 16:33:17,104 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 562 transitions. Word has length 7 [2024-10-14 16:33:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:33:17,104 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 562 transitions. [2024-10-14 16:33:17,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:33:17,104 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 562 transitions. [2024-10-14 16:33:17,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 16:33:17,105 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:33:17,105 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:33:17,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:33:17,106 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:33:17,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:33:17,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1301144548, now seen corresponding path program 1 times [2024-10-14 16:33:17,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:33:17,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392586017] [2024-10-14 16:33:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:17,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:33:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:33:17,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:33:17,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392586017] [2024-10-14 16:33:17,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392586017] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:33:17,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:33:17,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:33:17,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672699228] [2024-10-14 16:33:17,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:33:17,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:33:17,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:33:17,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:33:17,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:33:17,318 INFO L87 Difference]: Start difference. First operand 389 states and 562 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:33:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:33:17,485 INFO L93 Difference]: Finished difference Result 963 states and 1394 transitions. [2024-10-14 16:33:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:33:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-10-14 16:33:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:33:17,492 INFO L225 Difference]: With dead ends: 963 [2024-10-14 16:33:17,492 INFO L226 Difference]: Without dead ends: 773 [2024-10-14 16:33:17,493 INFO L431 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 [2024-10-14 16:33:17,494 INFO L432 NwaCegarLoop]: 584 mSDtfsCounter, 548 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:33:17,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1705 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:33:17,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-10-14 16:33:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 391. [2024-10-14 16:33:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 385 states have (on average 1.4493506493506494) internal successors, (558), 386 states have internal predecessors, (558), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:33:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 564 transitions. [2024-10-14 16:33:17,525 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 564 transitions. Word has length 9 [2024-10-14 16:33:17,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:33:17,525 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 564 transitions. [2024-10-14 16:33:17,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:33:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 564 transitions. [2024-10-14 16:33:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-14 16:33:17,528 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:33:17,529 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:33:17,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:33:17,529 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:33:17,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:33:17,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1454214717, now seen corresponding path program 1 times [2024-10-14 16:33:17,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:33:17,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429116006] [2024-10-14 16:33:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:17,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:33:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:33:17,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:33:17,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429116006] [2024-10-14 16:33:17,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429116006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:33:17,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:33:17,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:33:17,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917844135] [2024-10-14 16:33:17,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:33:17,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:33:17,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:33:17,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:33:17,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:33:17,996 INFO L87 Difference]: Start difference. First operand 391 states and 564 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:33:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:33:18,103 INFO L93 Difference]: Finished difference Result 737 states and 1059 transitions. [2024-10-14 16:33:18,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 16:33:18,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-10-14 16:33:18,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:33:18,106 INFO L225 Difference]: With dead ends: 737 [2024-10-14 16:33:18,106 INFO L226 Difference]: Without dead ends: 349 [2024-10-14 16:33:18,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:33:18,108 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 30 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:33:18,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1357 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:33:18,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-10-14 16:33:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2024-10-14 16:33:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 343 states have (on average 1.402332361516035) internal successors, (481), 344 states have internal predecessors, (481), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:33:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 487 transitions. [2024-10-14 16:33:18,134 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 487 transitions. Word has length 85 [2024-10-14 16:33:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:33:18,136 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 487 transitions. [2024-10-14 16:33:18,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:33:18,136 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 487 transitions. [2024-10-14 16:33:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-14 16:33:18,139 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:33:18,139 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:33:18,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 16:33:18,139 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:33:18,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:33:18,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1209933513, now seen corresponding path program 1 times [2024-10-14 16:33:18,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:33:18,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331154757] [2024-10-14 16:33:18,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:33:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:33:18,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:33:18,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331154757] [2024-10-14 16:33:18,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331154757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:33:18,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:33:18,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:33:18,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783213626] [2024-10-14 16:33:18,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:33:18,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:33:18,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:33:18,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:33:18,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:33:18,395 INFO L87 Difference]: Start difference. First operand 349 states and 487 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:33:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:33:18,505 INFO L93 Difference]: Finished difference Result 946 states and 1332 transitions. [2024-10-14 16:33:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:33:18,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-10-14 16:33:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:33:18,510 INFO L225 Difference]: With dead ends: 946 [2024-10-14 16:33:18,511 INFO L226 Difference]: Without dead ends: 600 [2024-10-14 16:33:18,512 INFO L431 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 [2024-10-14 16:33:18,513 INFO L432 NwaCegarLoop]: 663 mSDtfsCounter, 295 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:33:18,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1117 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:33:18,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-10-14 16:33:18,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 596. [2024-10-14 16:33:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 590 states have (on average 1.4186440677966101) internal successors, (837), 591 states have internal predecessors, (837), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:33:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 843 transitions. [2024-10-14 16:33:18,535 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 843 transitions. Word has length 85 [2024-10-14 16:33:18,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:33:18,537 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 843 transitions. [2024-10-14 16:33:18,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:33:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 843 transitions. [2024-10-14 16:33:18,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-14 16:33:18,540 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:33:18,541 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:33:18,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 16:33:18,542 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:33:18,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:33:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash -482425813, now seen corresponding path program 1 times [2024-10-14 16:33:18,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:33:18,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631080362] [2024-10-14 16:33:18,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:18,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:33:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:19,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:33:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:19,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:33:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:33:19,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:33:19,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631080362] [2024-10-14 16:33:19,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631080362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:33:19,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:33:19,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:33:19,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207213183] [2024-10-14 16:33:19,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:33:19,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 16:33:19,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:33:19,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 16:33:19,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:33:19,015 INFO L87 Difference]: Start difference. First operand 596 states and 843 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:33:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:33:19,377 INFO L93 Difference]: Finished difference Result 880 states and 1249 transitions. [2024-10-14 16:33:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 16:33:19,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2024-10-14 16:33:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:33:19,386 INFO L225 Difference]: With dead ends: 880 [2024-10-14 16:33:19,386 INFO L226 Difference]: Without dead ends: 876 [2024-10-14 16:33:19,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:33:19,389 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 460 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:33:19,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1865 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:33:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-10-14 16:33:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 598. [2024-10-14 16:33:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 592 states have (on average 1.4172297297297298) internal successors, (839), 593 states have internal predecessors, (839), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:33:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 845 transitions. [2024-10-14 16:33:19,426 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 845 transitions. Word has length 98 [2024-10-14 16:33:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:33:19,427 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 845 transitions. [2024-10-14 16:33:19,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:33:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 845 transitions. [2024-10-14 16:33:19,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-14 16:33:19,432 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:33:19,435 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:33:19,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 16:33:19,436 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:33:19,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:33:19,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1953883244, now seen corresponding path program 1 times [2024-10-14 16:33:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:33:19,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938376392] [2024-10-14 16:33:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:19,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:33:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:19,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:33:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:19,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:33:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:33:19,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:33:19,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938376392] [2024-10-14 16:33:19,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938376392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:33:19,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:33:19,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:33:19,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705576501] [2024-10-14 16:33:19,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:33:19,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 16:33:19,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:33:19,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 16:33:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:33:19,783 INFO L87 Difference]: Start difference. First operand 598 states and 845 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:33:20,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:33:20,120 INFO L93 Difference]: Finished difference Result 865 states and 1230 transitions. [2024-10-14 16:33:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:33:20,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2024-10-14 16:33:20,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:33:20,126 INFO L225 Difference]: With dead ends: 865 [2024-10-14 16:33:20,126 INFO L226 Difference]: Without dead ends: 516 [2024-10-14 16:33:20,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:33:20,129 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 32 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:33:20,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1408 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:33:20,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-14 16:33:20,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 514. [2024-10-14 16:33:20,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 508 states have (on average 1.3484251968503937) internal successors, (685), 509 states have internal predecessors, (685), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:33:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 691 transitions. [2024-10-14 16:33:20,146 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 691 transitions. Word has length 152 [2024-10-14 16:33:20,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:33:20,148 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 691 transitions. [2024-10-14 16:33:20,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:33:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 691 transitions. [2024-10-14 16:33:20,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-14 16:33:20,151 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:33:20,152 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:33:20,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 16:33:20,153 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:33:20,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:33:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash 782369120, now seen corresponding path program 1 times [2024-10-14 16:33:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:33:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526056226] [2024-10-14 16:33:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:33:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:20,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:33:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:20,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:33:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:33:20,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:33:20,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526056226] [2024-10-14 16:33:20,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526056226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:33:20,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:33:20,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 16:33:20,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614516926] [2024-10-14 16:33:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:33:20,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:33:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:33:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:33:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:33:20,493 INFO L87 Difference]: Start difference. First operand 514 states and 691 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:33:21,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:33:21,252 INFO L93 Difference]: Finished difference Result 1287 states and 1734 transitions. [2024-10-14 16:33:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:33:21,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2024-10-14 16:33:21,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:33:21,258 INFO L225 Difference]: With dead ends: 1287 [2024-10-14 16:33:21,258 INFO L226 Difference]: Without dead ends: 863 [2024-10-14 16:33:21,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:33:21,260 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 1155 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 16:33:21,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 1781 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 16:33:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-10-14 16:33:21,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 653. [2024-10-14 16:33:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 647 states have (on average 1.3508500772797527) internal successors, (874), 648 states have internal predecessors, (874), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:33:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 880 transitions. [2024-10-14 16:33:21,285 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 880 transitions. Word has length 152 [2024-10-14 16:33:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:33:21,286 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 880 transitions. [2024-10-14 16:33:21,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:33:21,286 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 880 transitions. [2024-10-14 16:33:21,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-14 16:33:21,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:33:21,288 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:33:21,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 16:33:21,289 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:33:21,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:33:21,289 INFO L85 PathProgramCache]: Analyzing trace with hash -490227948, now seen corresponding path program 1 times [2024-10-14 16:33:21,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:33:21,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080565636] [2024-10-14 16:33:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:21,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:33:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:22,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:33:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:22,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:33:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:33:22,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:33:22,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080565636] [2024-10-14 16:33:22,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080565636] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:33:22,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802570149] [2024-10-14 16:33:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:22,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:33:22,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:33:22,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:33:22,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 16:33:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:22,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 16:33:22,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:33:22,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 16:33:22,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:22,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 16:33:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:33:22,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:33:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:33:23,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802570149] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:33:23,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:33:23,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2024-10-14 16:33:23,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341287884] [2024-10-14 16:33:23,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:33:23,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 16:33:23,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:33:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 16:33:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-14 16:33:23,134 INFO L87 Difference]: Start difference. First operand 653 states and 880 transitions. Second operand has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:33:23,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:33:23,735 INFO L93 Difference]: Finished difference Result 2930 states and 3963 transitions. [2024-10-14 16:33:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 16:33:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 162 [2024-10-14 16:33:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:33:23,745 INFO L225 Difference]: With dead ends: 2930 [2024-10-14 16:33:23,746 INFO L226 Difference]: Without dead ends: 2523 [2024-10-14 16:33:23,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-14 16:33:23,748 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 2025 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 16:33:23,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 3479 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 16:33:23,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2024-10-14 16:33:23,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 999. [2024-10-14 16:33:23,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 989 states have (on average 1.3447927199191103) internal successors, (1330), 990 states have internal predecessors, (1330), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 16:33:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1342 transitions. [2024-10-14 16:33:23,805 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1342 transitions. Word has length 162 [2024-10-14 16:33:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:33:23,806 INFO L471 AbstractCegarLoop]: Abstraction has 999 states and 1342 transitions. [2024-10-14 16:33:23,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:33:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1342 transitions. [2024-10-14 16:33:23,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-10-14 16:33:23,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:33:23,812 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:33:23,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 16:33:24,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:33:24,016 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:33:24,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:33:24,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2030814949, now seen corresponding path program 1 times [2024-10-14 16:33:24,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:33:24,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397229935] [2024-10-14 16:33:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:24,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:33:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:27,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:33:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:27,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:33:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:33:27,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:33:27,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397229935] [2024-10-14 16:33:27,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397229935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:33:27,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708274738] [2024-10-14 16:33:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:27,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:33:27,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:33:27,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:33:27,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 16:33:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:28,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 16:33:28,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:33:28,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 16:33:28,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:28,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:28,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:29,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:29,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 16:33:29,058 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:33:29,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:33:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:33:29,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708274738] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:33:29,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:33:29,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20 [2024-10-14 16:33:29,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743388743] [2024-10-14 16:33:29,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:33:29,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-14 16:33:29,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:33:29,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-14 16:33:29,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2024-10-14 16:33:29,648 INFO L87 Difference]: Start difference. First operand 999 states and 1342 transitions. Second operand has 20 states, 20 states have (on average 35.3) internal successors, (706), 19 states have internal predecessors, (706), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:33:30,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:33:30,638 INFO L93 Difference]: Finished difference Result 6218 states and 8418 transitions. [2024-10-14 16:33:30,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-14 16:33:30,639 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 35.3) internal successors, (706), 19 states have internal predecessors, (706), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 390 [2024-10-14 16:33:30,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:33:30,662 INFO L225 Difference]: With dead ends: 6218 [2024-10-14 16:33:30,663 INFO L226 Difference]: Without dead ends: 5811 [2024-10-14 16:33:30,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 773 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2024-10-14 16:33:30,667 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 6347 mSDsluCounter, 5657 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6371 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 16:33:30,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6371 Valid, 6079 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 16:33:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2024-10-14 16:33:30,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 1863. [2024-10-14 16:33:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1847 states have (on average 1.3405522468868436) internal successors, (2476), 1848 states have internal predecessors, (2476), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 16:33:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2500 transitions. [2024-10-14 16:33:30,761 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2500 transitions. Word has length 390 [2024-10-14 16:33:30,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:33:30,761 INFO L471 AbstractCegarLoop]: Abstraction has 1863 states and 2500 transitions. [2024-10-14 16:33:30,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 35.3) internal successors, (706), 19 states have internal predecessors, (706), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:33:30,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2500 transitions. [2024-10-14 16:33:30,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2024-10-14 16:33:30,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:33:30,780 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:33:30,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 16:33:30,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-14 16:33:30,985 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:33:30,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:33:30,985 INFO L85 PathProgramCache]: Analyzing trace with hash 389996201, now seen corresponding path program 2 times [2024-10-14 16:33:30,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:33:30,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902438017] [2024-10-14 16:33:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:30,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:33:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:41,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:33:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:41,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:33:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:33:41,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:33:41,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902438017] [2024-10-14 16:33:41,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902438017] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:33:41,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276664509] [2024-10-14 16:33:41,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:33:41,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:33:41,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:33:41,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:33:41,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 16:33:42,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 16:33:42,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:33:42,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 16:33:42,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:33:42,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 16:33:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2024-10-14 16:33:43,349 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:33:43,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276664509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:33:43,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:33:43,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 27 [2024-10-14 16:33:43,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604524020] [2024-10-14 16:33:43,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:33:43,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:33:43,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:33:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:33:43,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2024-10-14 16:33:43,352 INFO L87 Difference]: Start difference. First operand 1863 states and 2500 transitions. Second operand has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:33:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:33:44,121 INFO L93 Difference]: Finished difference Result 2447 states and 3283 transitions. [2024-10-14 16:33:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:33:44,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 846 [2024-10-14 16:33:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:33:44,131 INFO L225 Difference]: With dead ends: 2447 [2024-10-14 16:33:44,131 INFO L226 Difference]: Without dead ends: 2043 [2024-10-14 16:33:44,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2024-10-14 16:33:44,133 INFO L432 NwaCegarLoop]: 436 mSDtfsCounter, 395 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 16:33:44,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 2262 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 16:33:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2024-10-14 16:33:44,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1898. [2024-10-14 16:33:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1882 states have (on average 1.3363443145589797) internal successors, (2515), 1883 states have internal predecessors, (2515), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 16:33:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2539 transitions. [2024-10-14 16:33:44,199 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2539 transitions. Word has length 846 [2024-10-14 16:33:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:33:44,201 INFO L471 AbstractCegarLoop]: Abstraction has 1898 states and 2539 transitions. [2024-10-14 16:33:44,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:33:44,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2539 transitions. [2024-10-14 16:33:44,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2024-10-14 16:33:44,222 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:33:44,224 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:33:44,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 16:33:44,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:33:44,425 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:33:44,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:33:44,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1902078424, now seen corresponding path program 1 times [2024-10-14 16:33:44,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:33:44,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279978592] [2024-10-14 16:33:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:44,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:33:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:54,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:33:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:54,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:33:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:33:54,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:33:54,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279978592] [2024-10-14 16:33:54,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279978592] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:33:54,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985648859] [2024-10-14 16:33:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:33:54,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:33:54,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:33:54,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:33:54,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 16:33:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:33:56,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 4159 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-14 16:33:56,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:33:56,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 16:33:56,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:56,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:56,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:56,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:56,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:56,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:56,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:56,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:57,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:57,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:33:57,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 16:33:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:33:57,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:33:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:33:58,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985648859] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:33:58,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:33:58,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 14] total 33 [2024-10-14 16:33:58,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186750307] [2024-10-14 16:33:58,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:33:58,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-14 16:33:58,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:33:58,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-14 16:33:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=643, Unknown=0, NotChecked=0, Total=1056 [2024-10-14 16:33:58,215 INFO L87 Difference]: Start difference. First operand 1898 states and 2539 transitions. Second operand has 33 states, 33 states have (on average 49.121212121212125) internal successors, (1621), 32 states have internal predecessors, (1621), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:34:00,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:34:00,234 INFO L93 Difference]: Finished difference Result 12829 states and 17366 transitions. [2024-10-14 16:34:00,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-14 16:34:00,236 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 49.121212121212125) internal successors, (1621), 32 states have internal predecessors, (1621), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 847 [2024-10-14 16:34:00,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:34:00,288 INFO L225 Difference]: With dead ends: 12829 [2024-10-14 16:34:00,289 INFO L226 Difference]: Without dead ends: 12387 [2024-10-14 16:34:00,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1736 GetRequests, 1683 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=878, Invalid=1774, Unknown=0, NotChecked=0, Total=2652 [2024-10-14 16:34:00,299 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 22755 mSDsluCounter, 11243 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22803 SdHoareTripleChecker+Valid, 11665 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 16:34:00,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22803 Valid, 11665 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 16:34:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12387 states. [2024-10-14 16:34:00,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12387 to 3626. [2024-10-14 16:34:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3598 states have (on average 1.3360200111172873) internal successors, (4807), 3599 states have internal predecessors, (4807), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-14 16:34:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 4855 transitions. [2024-10-14 16:34:00,492 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 4855 transitions. Word has length 847 [2024-10-14 16:34:00,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:34:00,493 INFO L471 AbstractCegarLoop]: Abstraction has 3626 states and 4855 transitions. [2024-10-14 16:34:00,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 49.121212121212125) internal successors, (1621), 32 states have internal predecessors, (1621), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:34:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 4855 transitions. [2024-10-14 16:34:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1760 [2024-10-14 16:34:00,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:34:00,517 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:34:00,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 16:34:00,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:34:00,718 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:34:00,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:34:00,719 INFO L85 PathProgramCache]: Analyzing trace with hash 251521164, now seen corresponding path program 2 times [2024-10-14 16:34:00,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:34:00,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430402048] [2024-10-14 16:34:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:34:00,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:34:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat