./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_BER_test8-2.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_BER_test8-2.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 fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:23:42,327 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:23:42,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 16:23:42,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:23:42,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:23:42,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:23:42,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:23:42,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:23:42,428 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 16:23:42,429 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 16:23:42,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:23:42,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:23:42,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:23:42,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:23:42,433 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:23:42,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:23:42,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:23:42,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:23:42,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:23:42,436 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:23:42,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:23:42,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:23:42,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:23:42,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:23:42,438 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:23:42,438 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:23:42,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:23:42,438 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:23:42,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:23:42,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:23:42,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 16:23:42,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:23:42,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:23:42,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:23:42,441 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:23:42,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:23:42,442 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:23:42,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:23:42,442 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:23:42,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:23:42,443 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:23:42,443 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:23:42,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c [2024-10-14 16:23:42,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:23:42,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:23:42,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:23:42,756 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:23:42,756 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:23:42,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2024-10-14 16:23:44,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:23:44,513 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:23:44,515 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2024-10-14 16:23:44,540 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b1b1e07/13aabaa80edb4f13aaf481a01115d1cc/FLAG6d6bd0383 [2024-10-14 16:23:44,785 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b1b1e07/13aabaa80edb4f13aaf481a01115d1cc [2024-10-14 16:23:44,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:23:44,788 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:23:44,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:23:44,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:23:44,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:23:44,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:23:44" (1/1) ... [2024-10-14 16:23:44,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321e414e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:44, skipping insertion in model container [2024-10-14 16:23:44,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:23:44" (1/1) ... [2024-10-14 16:23:44,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:23:45,223 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_BER_test8-2.i[33021,33034] [2024-10-14 16:23:45,340 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_BER_test8-2.i[45234,45247] [2024-10-14 16:23:45,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:23:45,371 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:23:45,422 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_BER_test8-2.i[33021,33034] [2024-10-14 16:23:45,473 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_BER_test8-2.i[45234,45247] [2024-10-14 16:23:45,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:23:45,518 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:23:45,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45 WrapperNode [2024-10-14 16:23:45,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:23:45,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:23:45,520 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:23:45,520 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:23:45,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,564 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,650 INFO L138 Inliner]: procedures = 177, calls = 340, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1589 [2024-10-14 16:23:45,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:23:45,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:23:45,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:23:45,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:23:45,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,799 INFO L175 MemorySlicer]: Split 304 memory accesses to 3 slices as follows [2, 268, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2024-10-14 16:23:45,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:23:45,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:23:45,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:23:45,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:23:45,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (1/1) ... [2024-10-14 16:23:45,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:23:45,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:23:45,981 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 16:23:45,983 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 16:23:46,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 16:23:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 16:23:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 16:23:46,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 16:23:46,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 16:23:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 16:23:46,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 16:23:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 16:23:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-14 16:23:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-14 16:23:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-14 16:23:46,068 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-14 16:23:46,068 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-14 16:23:46,068 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-14 16:23:46,068 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-10-14 16:23:46,069 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-10-14 16:23:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 16:23:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:23:46,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 16:23:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 16:23:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 16:23:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 16:23:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 16:23:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 16:23:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 16:23:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 16:23:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 16:23:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 16:23:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 16:23:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:23:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:23:46,295 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:23:46,297 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:23:47,657 INFO L? ?]: Removed 355 outVars from TransFormulas that were not future-live. [2024-10-14 16:23:47,658 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:23:47,720 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:23:47,721 INFO L314 CfgBuilder]: Removed 71 assume(true) statements. [2024-10-14 16:23:47,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:23:47 BoogieIcfgContainer [2024-10-14 16:23:47,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:23:47,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:23:47,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:23:47,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:23:47,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:23:44" (1/3) ... [2024-10-14 16:23:47,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7670caa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:23:47, skipping insertion in model container [2024-10-14 16:23:47,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:23:45" (2/3) ... [2024-10-14 16:23:47,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7670caa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:23:47, skipping insertion in model container [2024-10-14 16:23:47,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:23:47" (3/3) ... [2024-10-14 16:23:47,731 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-2.i [2024-10-14 16:23:47,745 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:23:47,745 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 16:23:47,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:23:47,836 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;@2681abce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:23:47,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 16:23:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 464 states, 438 states have (on average 1.6369863013698631) internal successors, (717), 455 states have internal predecessors, (717), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-14 16:23:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 16:23:47,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:23:47,851 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:23:47,852 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:23:47,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:23:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1067961426, now seen corresponding path program 1 times [2024-10-14 16:23:47,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:23:47,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661003508] [2024-10-14 16:23:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:23:47,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:23:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:48,046 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 16:23:48,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:23:48,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661003508] [2024-10-14 16:23:48,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661003508] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:23:48,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:23:48,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:23:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612732562] [2024-10-14 16:23:48,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:23:48,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:23:48,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:23:48,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:23:48,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:23:48,089 INFO L87 Difference]: Start difference. First operand has 464 states, 438 states have (on average 1.6369863013698631) internal successors, (717), 455 states have internal predecessors, (717), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 16:23:48,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:23:48,184 INFO L93 Difference]: Finished difference Result 927 states and 1530 transitions. [2024-10-14 16:23:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:23:48,186 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-10-14 16:23:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:23:48,202 INFO L225 Difference]: With dead ends: 927 [2024-10-14 16:23:48,203 INFO L226 Difference]: Without dead ends: 428 [2024-10-14 16:23:48,210 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 16:23:48,213 INFO L432 NwaCegarLoop]: 674 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 16:23:48,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 674 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 16:23:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-10-14 16:23:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2024-10-14 16:23:48,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 403 states have (on average 1.466501240694789) internal successors, (591), 419 states have internal predecessors, (591), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-14 16:23:48,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 631 transitions. [2024-10-14 16:23:48,282 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 631 transitions. Word has length 8 [2024-10-14 16:23:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:23:48,283 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 631 transitions. [2024-10-14 16:23:48,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 16:23:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 631 transitions. [2024-10-14 16:23:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-14 16:23:48,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:23:48,287 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:23:48,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:23:48,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:23:48,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:23:48,289 INFO L85 PathProgramCache]: Analyzing trace with hash 403066284, now seen corresponding path program 1 times [2024-10-14 16:23:48,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:23:48,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218610763] [2024-10-14 16:23:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:23:48,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:23:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:48,779 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 16:23:48,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:23:48,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218610763] [2024-10-14 16:23:48,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218610763] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:23:48,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:23:48,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:23:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053897634] [2024-10-14 16:23:48,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:23:48,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:23:48,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:23:48,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:23:48,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:23:48,787 INFO L87 Difference]: Start difference. First operand 428 states and 631 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:23:48,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:23:48,946 INFO L93 Difference]: Finished difference Result 1039 states and 1531 transitions. [2024-10-14 16:23:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:23:48,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-14 16:23:48,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:23:48,952 INFO L225 Difference]: With dead ends: 1039 [2024-10-14 16:23:48,952 INFO L226 Difference]: Without dead ends: 812 [2024-10-14 16:23:48,955 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 16:23:48,956 INFO L432 NwaCegarLoop]: 652 mSDtfsCounter, 546 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:23:48,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1907 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:23:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-14 16:23:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 430. [2024-10-14 16:23:48,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 405 states have (on average 1.4641975308641975) internal successors, (593), 421 states have internal predecessors, (593), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-14 16:23:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 633 transitions. [2024-10-14 16:23:48,998 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 633 transitions. Word has length 63 [2024-10-14 16:23:48,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:23:48,999 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 633 transitions. [2024-10-14 16:23:48,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:23:48,999 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 633 transitions. [2024-10-14 16:23:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-14 16:23:49,005 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:23:49,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:49,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:23:49,007 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:23:49,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:23:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1680180753, now seen corresponding path program 1 times [2024-10-14 16:23:49,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:23:49,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960806053] [2024-10-14 16:23:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:23:49,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:23:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:49,266 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 16:23:49,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:23:49,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960806053] [2024-10-14 16:23:49,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960806053] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:23:49,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:23:49,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:23:49,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345457966] [2024-10-14 16:23:49,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:23:49,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:23:49,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:23:49,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:23:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:23:49,271 INFO L87 Difference]: Start difference. First operand 430 states and 633 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:23:49,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:23:49,386 INFO L93 Difference]: Finished difference Result 860 states and 1266 transitions. [2024-10-14 16:23:49,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:23:49,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-14 16:23:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:23:49,389 INFO L225 Difference]: With dead ends: 860 [2024-10-14 16:23:49,390 INFO L226 Difference]: Without dead ends: 433 [2024-10-14 16:23:49,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 16:23:49,392 INFO L432 NwaCegarLoop]: 599 mSDtfsCounter, 105 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:23:49,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1706 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:23:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-10-14 16:23:49,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 430. [2024-10-14 16:23:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 405 states have (on average 1.4469135802469135) internal successors, (586), 421 states have internal predecessors, (586), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-14 16:23:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 626 transitions. [2024-10-14 16:23:49,411 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 626 transitions. Word has length 84 [2024-10-14 16:23:49,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:23:49,411 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 626 transitions. [2024-10-14 16:23:49,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:23:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 626 transitions. [2024-10-14 16:23:49,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-14 16:23:49,413 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:23:49,414 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:49,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 16:23:49,414 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:23:49,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:23:49,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1523747101, now seen corresponding path program 1 times [2024-10-14 16:23:49,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:23:49,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746029794] [2024-10-14 16:23:49,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:23:49,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:23:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:49,623 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 16:23:49,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:23:49,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746029794] [2024-10-14 16:23:49,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746029794] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:23:49,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:23:49,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:23:49,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256680805] [2024-10-14 16:23:49,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:23:49,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:23:49,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:23:49,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:23:49,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:23:49,628 INFO L87 Difference]: Start difference. First operand 430 states and 626 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:23:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:23:49,740 INFO L93 Difference]: Finished difference Result 1151 states and 1681 transitions. [2024-10-14 16:23:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:23:49,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-14 16:23:49,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:23:49,744 INFO L225 Difference]: With dead ends: 1151 [2024-10-14 16:23:49,745 INFO L226 Difference]: Without dead ends: 724 [2024-10-14 16:23:49,746 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 16:23:49,747 INFO L432 NwaCegarLoop]: 808 mSDtfsCounter, 371 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:23:49,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1406 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:23:49,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-10-14 16:23:49,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 721. [2024-10-14 16:23:49,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 695 states have (on average 1.4561151079136692) internal successors, (1012), 711 states have internal predecessors, (1012), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-14 16:23:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1054 transitions. [2024-10-14 16:23:49,796 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1054 transitions. Word has length 84 [2024-10-14 16:23:49,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:23:49,798 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1054 transitions. [2024-10-14 16:23:49,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:23:49,798 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1054 transitions. [2024-10-14 16:23:49,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-14 16:23:49,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:23:49,801 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 16:23:49,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 16:23:49,801 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:23:49,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:23:49,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2001950907, now seen corresponding path program 1 times [2024-10-14 16:23:49,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:23:49,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228054127] [2024-10-14 16:23:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:23:49,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:23:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:50,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:23:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:50,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:23:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 16:23:50,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:23:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228054127] [2024-10-14 16:23:50,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228054127] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:23:50,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72542003] [2024-10-14 16:23:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:23:50,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:23:50,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:23:50,451 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 16:23:50,452 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 16:23:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:50,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-14 16:23:50,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:23:50,839 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 16:23:50,870 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 16 treesize of output 17 [2024-10-14 16:23:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:23:51,935 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:23:51,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72542003] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:23:51,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:23:51,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2024-10-14 16:23:51,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43013711] [2024-10-14 16:23:51,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:23:51,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 16:23:51,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:23:51,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 16:23:51,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-14 16:23:51,939 INFO L87 Difference]: Start difference. First operand 721 states and 1054 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:23:54,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:23:54,023 INFO L93 Difference]: Finished difference Result 1690 states and 2454 transitions. [2024-10-14 16:23:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 16:23:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 97 [2024-10-14 16:23:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:23:54,034 INFO L225 Difference]: With dead ends: 1690 [2024-10-14 16:23:54,035 INFO L226 Difference]: Without dead ends: 1054 [2024-10-14 16:23:54,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-10-14 16:23:54,038 INFO L432 NwaCegarLoop]: 602 mSDtfsCounter, 816 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-14 16:23:54,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 3519 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-14 16:23:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2024-10-14 16:23:54,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 747. [2024-10-14 16:23:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 721 states have (on average 1.4466019417475728) internal successors, (1043), 737 states have internal predecessors, (1043), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-14 16:23:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1085 transitions. [2024-10-14 16:23:54,071 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1085 transitions. Word has length 97 [2024-10-14 16:23:54,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:23:54,071 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 1085 transitions. [2024-10-14 16:23:54,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:23:54,072 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1085 transitions. [2024-10-14 16:23:54,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-14 16:23:54,073 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:23:54,074 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 16:23:54,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 16:23:54,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:23:54,275 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:23:54,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:23:54,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1928637173, now seen corresponding path program 1 times [2024-10-14 16:23:54,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:23:54,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968460635] [2024-10-14 16:23:54,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:23:54,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:23:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:54,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:23:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:54,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:23:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 16:23:54,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:23:54,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968460635] [2024-10-14 16:23:54,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968460635] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:23:54,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265531602] [2024-10-14 16:23:54,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:23:54,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:23:54,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:23:54,678 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 16:23:54,679 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 16:23:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:23:55,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-14 16:23:55,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:23:55,133 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 16:23:55,152 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 16 treesize of output 17 [2024-10-14 16:23:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:23:56,025 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:23:56,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265531602] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:23:56,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:23:56,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2024-10-14 16:23:56,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720706118] [2024-10-14 16:23:56,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:23:56,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 16:23:56,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:23:56,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 16:23:56,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:23:56,027 INFO L87 Difference]: Start difference. First operand 747 states and 1085 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:01,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 16:24:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:24:02,323 INFO L93 Difference]: Finished difference Result 1738 states and 2518 transitions. [2024-10-14 16:24:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 16:24:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 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 16:24:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:24:02,330 INFO L225 Difference]: With dead ends: 1738 [2024-10-14 16:24:02,331 INFO L226 Difference]: Without dead ends: 1107 [2024-10-14 16:24:02,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2024-10-14 16:24:02,334 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 882 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-10-14 16:24:02,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 3686 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 943 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2024-10-14 16:24:02,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2024-10-14 16:24:02,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 783. [2024-10-14 16:24:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 757 states have (on average 1.4385733157199472) internal successors, (1089), 773 states have internal predecessors, (1089), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-14 16:24:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1131 transitions. [2024-10-14 16:24:02,374 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1131 transitions. Word has length 98 [2024-10-14 16:24:02,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:24:02,376 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1131 transitions. [2024-10-14 16:24:02,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1131 transitions. [2024-10-14 16:24:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-14 16:24:02,377 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:24:02,378 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 16:24:02,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 16:24:02,578 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,SelfDestructingSolverStorable5 [2024-10-14 16:24:02,579 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:24:02,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:24:02,579 INFO L85 PathProgramCache]: Analyzing trace with hash -422667761, now seen corresponding path program 1 times [2024-10-14 16:24:02,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:24:02,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768070796] [2024-10-14 16:24:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:02,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:24:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:02,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-14 16:24:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:02,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 16:24:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:24:02,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:24:02,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768070796] [2024-10-14 16:24:02,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768070796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:24:02,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:24:02,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 16:24:02,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428152716] [2024-10-14 16:24:02,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:24:02,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 16:24:02,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:24:02,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 16:24:02,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 16:24:02,996 INFO L87 Difference]: Start difference. First operand 783 states and 1131 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:24:03,988 INFO L93 Difference]: Finished difference Result 1476 states and 2146 transitions. [2024-10-14 16:24:03,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 16:24:03,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2024-10-14 16:24:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:24:03,993 INFO L225 Difference]: With dead ends: 1476 [2024-10-14 16:24:03,993 INFO L226 Difference]: Without dead ends: 819 [2024-10-14 16:24:03,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 16:24:03,996 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 68 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 16:24:03,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 3025 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 16:24:03,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-10-14 16:24:04,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2024-10-14 16:24:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 785 states have (on average 1.4394904458598725) internal successors, (1130), 801 states have internal predecessors, (1130), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-14 16:24:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1172 transitions. [2024-10-14 16:24:04,021 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1172 transitions. Word has length 99 [2024-10-14 16:24:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:24:04,024 INFO L471 AbstractCegarLoop]: Abstraction has 811 states and 1172 transitions. [2024-10-14 16:24:04,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1172 transitions. [2024-10-14 16:24:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-14 16:24:04,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:24:04,026 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 16:24:04,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 16:24:04,027 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:24:04,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:24:04,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1667412822, now seen corresponding path program 1 times [2024-10-14 16:24:04,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:24:04,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270383695] [2024-10-14 16:24:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:04,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:24:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:04,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-14 16:24:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:04,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-14 16:24:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:24:04,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:24:04,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270383695] [2024-10-14 16:24:04,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270383695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:24:04,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:24:04,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 16:24:04,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076706351] [2024-10-14 16:24:04,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:24:04,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 16:24:04,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:24:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 16:24:04,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:24:04,413 INFO L87 Difference]: Start difference. First operand 811 states and 1172 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:24:05,267 INFO L93 Difference]: Finished difference Result 1502 states and 2183 transitions. [2024-10-14 16:24:05,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 16:24:05,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2024-10-14 16:24:05,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:24:05,275 INFO L225 Difference]: With dead ends: 1502 [2024-10-14 16:24:05,275 INFO L226 Difference]: Without dead ends: 819 [2024-10-14 16:24:05,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:24:05,278 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 63 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 16:24:05,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2636 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 16:24:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-10-14 16:24:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 817. [2024-10-14 16:24:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 791 states have (on average 1.436156763590392) internal successors, (1136), 807 states have internal predecessors, (1136), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-14 16:24:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1178 transitions. [2024-10-14 16:24:05,305 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1178 transitions. Word has length 99 [2024-10-14 16:24:05,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:24:05,305 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1178 transitions. [2024-10-14 16:24:05,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1178 transitions. [2024-10-14 16:24:05,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-14 16:24:05,306 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:24:05,307 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 16:24:05,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 16:24:05,307 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:24:05,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:24:05,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1813840567, now seen corresponding path program 1 times [2024-10-14 16:24:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:24:05,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427605512] [2024-10-14 16:24:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:24:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:05,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 16:24:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:05,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 16:24:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 16:24:05,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:24:05,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427605512] [2024-10-14 16:24:05,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427605512] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:24:05,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068114783] [2024-10-14 16:24:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:05,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:24:05,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:24:05,747 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 16:24:05,748 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 16:24:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:06,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 16:24:06,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:24:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:24:06,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:24:06,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068114783] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:24:06,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:24:06,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-14 16:24:06,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196300546] [2024-10-14 16:24:06,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:24:06,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 16:24:06,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:24:06,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 16:24:06,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:24:06,169 INFO L87 Difference]: Start difference. First operand 817 states and 1178 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:24:06,698 INFO L93 Difference]: Finished difference Result 1530 states and 2217 transitions. [2024-10-14 16:24:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 16:24:06,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-10-14 16:24:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:24:06,702 INFO L225 Difference]: With dead ends: 1530 [2024-10-14 16:24:06,702 INFO L226 Difference]: Without dead ends: 837 [2024-10-14 16:24:06,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-14 16:24:06,704 INFO L432 NwaCegarLoop]: 602 mSDtfsCounter, 43 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 16:24:06,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3085 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 16:24:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2024-10-14 16:24:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 813. [2024-10-14 16:24:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 787 states have (on average 1.434561626429479) internal successors, (1129), 803 states have internal predecessors, (1129), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-14 16:24:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1171 transitions. [2024-10-14 16:24:06,728 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1171 transitions. Word has length 100 [2024-10-14 16:24:06,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:24:06,728 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1171 transitions. [2024-10-14 16:24:06,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:06,729 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1171 transitions. [2024-10-14 16:24:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-14 16:24:06,730 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:24:06,730 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 16:24:06,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 16:24:06,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:24:06,931 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:24:06,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:24:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash -69680462, now seen corresponding path program 1 times [2024-10-14 16:24:06,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:24:06,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665489892] [2024-10-14 16:24:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:24:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:07,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 16:24:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:07,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 16:24:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 16:24:07,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:24:07,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665489892] [2024-10-14 16:24:07,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665489892] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:24:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995209805] [2024-10-14 16:24:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:07,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:24:07,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:24:07,275 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 16:24:07,276 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 16:24:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:07,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 16:24:07,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:24:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:24:14,642 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:24:14,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995209805] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:24:14,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:24:14,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-14 16:24:14,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517464854] [2024-10-14 16:24:14,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:24:14,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 16:24:14,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:24:14,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 16:24:14,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:24:14,644 INFO L87 Difference]: Start difference. First operand 813 states and 1171 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:17,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-14 16:24:19,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-14 16:24:20,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-14 16:24:24,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-14 16:24:25,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:24:25,102 INFO L93 Difference]: Finished difference Result 1495 states and 2164 transitions. [2024-10-14 16:24:25,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 16:24:25,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-10-14 16:24:25,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:24:25,107 INFO L225 Difference]: With dead ends: 1495 [2024-10-14 16:24:25,107 INFO L226 Difference]: Without dead ends: 823 [2024-10-14 16:24:25,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:24:25,109 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 12 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-10-14 16:24:25,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2990 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 789 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2024-10-14 16:24:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2024-10-14 16:24:25,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 813. [2024-10-14 16:24:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 787 states have (on average 1.434561626429479) internal successors, (1129), 803 states have internal predecessors, (1129), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-14 16:24:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1171 transitions. [2024-10-14 16:24:25,131 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1171 transitions. Word has length 100 [2024-10-14 16:24:25,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:24:25,132 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1171 transitions. [2024-10-14 16:24:25,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1171 transitions. [2024-10-14 16:24:25,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-14 16:24:25,133 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:24:25,133 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 16:24:25,154 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 16:24:25,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:24:25,338 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:24:25,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:24:25,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2036675938, now seen corresponding path program 1 times [2024-10-14 16:24:25,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:24:25,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069414292] [2024-10-14 16:24:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:24:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:25,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 16:24:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:25,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-14 16:24:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:24:25,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:24:25,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069414292] [2024-10-14 16:24:25,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069414292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:24:25,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:24:25,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-14 16:24:25,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665832494] [2024-10-14 16:24:25,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:24:25,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 16:24:25,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:24:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 16:24:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-14 16:24:25,801 INFO L87 Difference]: Start difference. First operand 813 states and 1171 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:27,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:24:27,094 INFO L93 Difference]: Finished difference Result 1519 states and 2198 transitions. [2024-10-14 16:24:27,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 16:24:27,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-10-14 16:24:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:24:27,099 INFO L225 Difference]: With dead ends: 1519 [2024-10-14 16:24:27,099 INFO L226 Difference]: Without dead ends: 847 [2024-10-14 16:24:27,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-10-14 16:24:27,101 INFO L432 NwaCegarLoop]: 540 mSDtfsCounter, 77 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-14 16:24:27,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 3948 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-14 16:24:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-10-14 16:24:27,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 833. [2024-10-14 16:24:27,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 807 states have (on average 1.4287484510532837) internal successors, (1153), 823 states have internal predecessors, (1153), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-14 16:24:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1195 transitions. [2024-10-14 16:24:27,125 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1195 transitions. Word has length 102 [2024-10-14 16:24:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:24:27,126 INFO L471 AbstractCegarLoop]: Abstraction has 833 states and 1195 transitions. [2024-10-14 16:24:27,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1195 transitions. [2024-10-14 16:24:27,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-14 16:24:27,127 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:24:27,127 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 16:24:27,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 16:24:27,127 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:24:27,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:24:27,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1608954182, now seen corresponding path program 1 times [2024-10-14 16:24:27,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:24:27,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559587113] [2024-10-14 16:24:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:27,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:24:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:27,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 16:24:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:27,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-14 16:24:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 16:24:27,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:24:27,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559587113] [2024-10-14 16:24:27,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559587113] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:24:27,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007968584] [2024-10-14 16:24:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:27,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:24:27,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:24:27,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:24:27,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 16:24:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:28,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 16:24:28,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:24:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:24:28,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:24:28,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007968584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:24:28,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:24:28,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-10-14 16:24:28,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54448309] [2024-10-14 16:24:28,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:24:28,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:24:28,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:24:28,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:24:28,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-10-14 16:24:28,461 INFO L87 Difference]: Start difference. First operand 833 states and 1195 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:29,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:24:29,548 INFO L93 Difference]: Finished difference Result 1545 states and 2227 transitions. [2024-10-14 16:24:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:24:29,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-10-14 16:24:29,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:24:29,553 INFO L225 Difference]: With dead ends: 1545 [2024-10-14 16:24:29,553 INFO L226 Difference]: Without dead ends: 863 [2024-10-14 16:24:29,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-10-14 16:24:29,555 INFO L432 NwaCegarLoop]: 607 mSDtfsCounter, 17 mSDsluCounter, 3882 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-14 16:24:29,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4489 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-14 16:24:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-10-14 16:24:29,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 857. [2024-10-14 16:24:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 831 states have (on average 1.4235860409145609) internal successors, (1183), 847 states have internal predecessors, (1183), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-14 16:24:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1225 transitions. [2024-10-14 16:24:29,579 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1225 transitions. Word has length 102 [2024-10-14 16:24:29,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:24:29,579 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1225 transitions. [2024-10-14 16:24:29,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:29,580 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1225 transitions. [2024-10-14 16:24:29,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-14 16:24:29,581 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:24:29,581 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 16:24:29,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 16:24:29,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-14 16:24:29,787 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:24:29,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:24:29,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1280845619, now seen corresponding path program 1 times [2024-10-14 16:24:29,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:24:29,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922038294] [2024-10-14 16:24:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:29,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:24:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:30,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-14 16:24:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:30,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-14 16:24:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 16:24:30,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:24:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922038294] [2024-10-14 16:24:30,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922038294] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:24:30,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781263792] [2024-10-14 16:24:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:30,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:24:30,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:24:30,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:24:30,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 16:24:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:30,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 16:24:30,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:24:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:24:30,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:24:30,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781263792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:24:30,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:24:30,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-14 16:24:30,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157471029] [2024-10-14 16:24:30,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:24:30,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 16:24:30,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:24:30,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 16:24:30,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:24:30,827 INFO L87 Difference]: Start difference. First operand 857 states and 1225 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:24:31,441 INFO L93 Difference]: Finished difference Result 1561 states and 2245 transitions. [2024-10-14 16:24:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 16:24:31,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-10-14 16:24:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:24:31,446 INFO L225 Difference]: With dead ends: 1561 [2024-10-14 16:24:31,446 INFO L226 Difference]: Without dead ends: 867 [2024-10-14 16:24:31,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:24:31,448 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 10 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 16:24:31,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2990 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 16:24:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2024-10-14 16:24:31,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 857. [2024-10-14 16:24:31,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 831 states have (on average 1.4235860409145609) internal successors, (1183), 847 states have internal predecessors, (1183), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-14 16:24:31,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1225 transitions. [2024-10-14 16:24:31,492 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1225 transitions. Word has length 102 [2024-10-14 16:24:31,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:24:31,492 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1225 transitions. [2024-10-14 16:24:31,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:24:31,493 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1225 transitions. [2024-10-14 16:24:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-14 16:24:31,494 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:24:31,494 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 16:24:31,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 16:24:31,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:24:31,699 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:24:31,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:24:31,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1764824217, now seen corresponding path program 1 times [2024-10-14 16:24:31,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:24:31,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453157304] [2024-10-14 16:24:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:31,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:24:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:32,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:24:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:32,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-14 16:24:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 16:24:32,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:24:32,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453157304] [2024-10-14 16:24:32,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453157304] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:24:32,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216442298] [2024-10-14 16:24:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:32,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:24:32,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:24:32,061 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:24:32,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 16:24:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:32,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 16:24:32,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:24:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:24:32,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:24:32,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216442298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:24:32,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:24:32,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-10-14 16:24:32,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354704082] [2024-10-14 16:24:32,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:24:32,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:24:32,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:24:32,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:24:32,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:24:32,738 INFO L87 Difference]: Start difference. First operand 857 states and 1225 transitions. Second operand has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 16:24:32,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:24:32,784 INFO L93 Difference]: Finished difference Result 1516 states and 2179 transitions. [2024-10-14 16:24:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:24:32,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-10-14 16:24:32,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:24:32,791 INFO L225 Difference]: With dead ends: 1516 [2024-10-14 16:24:32,791 INFO L226 Difference]: Without dead ends: 859 [2024-10-14 16:24:32,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:24:32,795 INFO L432 NwaCegarLoop]: 618 mSDtfsCounter, 0 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 16:24:32,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1850 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 16:24:32,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-10-14 16:24:32,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2024-10-14 16:24:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 832 states have (on average 1.4242788461538463) internal successors, (1185), 849 states have internal predecessors, (1185), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-10-14 16:24:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1228 transitions. [2024-10-14 16:24:32,823 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1228 transitions. Word has length 103 [2024-10-14 16:24:32,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:24:32,823 INFO L471 AbstractCegarLoop]: Abstraction has 859 states and 1228 transitions. [2024-10-14 16:24:32,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 16:24:32,824 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1228 transitions. [2024-10-14 16:24:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-14 16:24:32,825 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:24:32,825 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] [2024-10-14 16:24:32,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 16:24:33,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:24:33,026 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:24:33,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:24:33,027 INFO L85 PathProgramCache]: Analyzing trace with hash 166828079, now seen corresponding path program 1 times [2024-10-14 16:24:33,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:24:33,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552082698] [2024-10-14 16:24:33,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:33,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:24:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:33,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:24:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:33,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-14 16:24:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 16:24:33,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:24:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552082698] [2024-10-14 16:24:33,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552082698] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:24:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741371665] [2024-10-14 16:24:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:24:33,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:24:33,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:24:33,476 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:24:33,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 16:24:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:24:33,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-10-14 16:24:33,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:24:33,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-10-14 16:24:34,014 INFO L349 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2024-10-14 16:24:34,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2024-10-14 16:24:34,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-14 16:24:34,023 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 13 treesize of output 9 [2024-10-14 16:24:34,076 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 22 treesize of output 10 [2024-10-14 16:24:34,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-10-14 16:24:34,183 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-10-14 16:24:34,184 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-10-14 16:24:34,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-10-14 16:24:45,295 INFO L224 Elim1Store]: Index analysis took 465 ms