./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 20:48:08,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 20:48:08,200 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 20:48:08,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 20:48:08,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 20:48:08,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 20:48:08,236 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 20:48:08,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 20:48:08,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 20:48:08,237 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 20:48:08,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 20:48:08,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 20:48:08,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 20:48:08,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 20:48:08,237 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 20:48:08,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 20:48:08,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 20:48:08,238 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 20:48:08,238 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 20:48:08,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 20:48:08,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 20:48:08,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 20:48:08,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 20:48:08,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 20:48:08,239 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 20:48:08,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 20:48:08,239 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 20:48:08,239 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 20:48:08,239 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 20:48:08,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 20:48:08,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 20:48:08,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 20:48:08,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:48:08,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:48:08,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 20:48:08,240 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/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 -> 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d [2025-01-09 20:48:08,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 20:48:08,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 20:48:08,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 20:48:08,525 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 20:48:08,525 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 20:48:08,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2025-01-09 20:48:09,808 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a4042b0c1/1c8348486d2b40f19744c13f69774877/FLAG68a207fdb [2025-01-09 20:48:10,133 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 20:48:10,135 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2025-01-09 20:48:10,152 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a4042b0c1/1c8348486d2b40f19744c13f69774877/FLAG68a207fdb [2025-01-09 20:48:10,166 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a4042b0c1/1c8348486d2b40f19744c13f69774877 [2025-01-09 20:48:10,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 20:48:10,169 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 20:48:10,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 20:48:10,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 20:48:10,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 20:48:10,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:10,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd3c4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10, skipping insertion in model container [2025-01-09 20:48:10,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:10,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 20:48:10,565 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[33021,33034] [2025-01-09 20:48:10,676 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44124,44137] [2025-01-09 20:48:10,677 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44245,44258] [2025-01-09 20:48:10,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 20:48:10,717 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 20:48:10,759 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[33021,33034] [2025-01-09 20:48:10,835 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44124,44137] [2025-01-09 20:48:10,836 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44245,44258] [2025-01-09 20:48:10,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 20:48:10,882 INFO L204 MainTranslator]: Completed translation [2025-01-09 20:48:10,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10 WrapperNode [2025-01-09 20:48:10,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 20:48:10,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 20:48:10,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 20:48:10,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 20:48:10,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:10,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:10,978 INFO L138 Inliner]: procedures = 176, calls = 320, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1537 [2025-01-09 20:48:10,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 20:48:10,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 20:48:10,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 20:48:10,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 20:48:10,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:10,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:11,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:11,108 INFO L175 MemorySlicer]: Split 301 memory accesses to 3 slices as follows [2, 265, 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]. [2025-01-09 20:48:11,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:11,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:11,167 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:11,174 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:11,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:11,202 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:11,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:11,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 20:48:11,232 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 20:48:11,232 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 20:48:11,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 20:48:11,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (1/1) ... [2025-01-09 20:48:11,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:48:11,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:48:11,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 20:48:11,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 20:48:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 20:48:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 20:48:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 20:48:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 20:48:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 20:48:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 20:48:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-01-09 20:48:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-01-09 20:48:11,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-01-09 20:48:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-01-09 20:48:11,326 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-01-09 20:48:11,327 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-01-09 20:48:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 20:48:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 20:48:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 20:48:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 20:48:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 20:48:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 20:48:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 20:48:11,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 20:48:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 20:48:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 20:48:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 20:48:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 20:48:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 20:48:11,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 20:48:11,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 20:48:11,556 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 20:48:11,558 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 20:48:13,053 INFO L? ?]: Removed 333 outVars from TransFormulas that were not future-live. [2025-01-09 20:48:13,053 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 20:48:13,080 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 20:48:13,084 INFO L312 CfgBuilder]: Removed 35 assume(true) statements. [2025-01-09 20:48:13,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:48:13 BoogieIcfgContainer [2025-01-09 20:48:13,085 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 20:48:13,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 20:48:13,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 20:48:13,093 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 20:48:13,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 08:48:10" (1/3) ... [2025-01-09 20:48:13,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588d7402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:48:13, skipping insertion in model container [2025-01-09 20:48:13,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:48:10" (2/3) ... [2025-01-09 20:48:13,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588d7402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:48:13, skipping insertion in model container [2025-01-09 20:48:13,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:48:13" (3/3) ... [2025-01-09 20:48:13,095 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test7-2.i [2025-01-09 20:48:13,110 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 20:48:13,111 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test7-2.i that has 4 procedures, 434 locations, 1 initial locations, 43 loop locations, and 2 error locations. [2025-01-09 20:48:13,183 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 20:48:13,193 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;@10df93a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 20:48:13,195 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-09 20:48:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 426 states, 419 states have (on average 1.6181384248210025) internal successors, (678), 421 states have internal predecessors, (678), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:48:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-09 20:48:13,205 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:13,205 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:48:13,206 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:13,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:13,210 INFO L85 PathProgramCache]: Analyzing trace with hash 117936840, now seen corresponding path program 1 times [2025-01-09 20:48:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104703506] [2025-01-09 20:48:13,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:13,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 20:48:13,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 20:48:13,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:13,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:48:13,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:13,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104703506] [2025-01-09 20:48:13,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104703506] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:13,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:13,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 20:48:13,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356412806] [2025-01-09 20:48:13,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:13,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 20:48:13,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:13,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 20:48:13,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 20:48:13,377 INFO L87 Difference]: Start difference. First operand has 426 states, 419 states have (on average 1.6181384248210025) internal successors, (678), 421 states have internal predecessors, (678), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 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) [2025-01-09 20:48:13,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:13,443 INFO L93 Difference]: Finished difference Result 850 states and 1366 transitions. [2025-01-09 20:48:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 20:48:13,445 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 [2025-01-09 20:48:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:13,453 INFO L225 Difference]: With dead ends: 850 [2025-01-09 20:48:13,453 INFO L226 Difference]: Without dead ends: 390 [2025-01-09 20:48:13,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 20:48:13,462 INFO L435 NwaCegarLoop]: 612 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:13,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:48:13,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2025-01-09 20:48:13,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2025-01-09 20:48:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 384 states have (on average 1.4505208333333333) internal successors, (557), 385 states have internal predecessors, (557), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:48:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 563 transitions. [2025-01-09 20:48:13,528 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 563 transitions. Word has length 8 [2025-01-09 20:48:13,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:13,528 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 563 transitions. [2025-01-09 20:48:13,529 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) [2025-01-09 20:48:13,529 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 563 transitions. [2025-01-09 20:48:13,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 20:48:13,530 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:13,530 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:48:13,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 20:48:13,531 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:13,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1261697831, now seen corresponding path program 1 times [2025-01-09 20:48:13,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:13,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905353666] [2025-01-09 20:48:13,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:13,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:13,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 20:48:13,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 20:48:13,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:13,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:48:13,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:13,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905353666] [2025-01-09 20:48:13,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905353666] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:13,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:13,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 20:48:13,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915414086] [2025-01-09 20:48:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:13,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 20:48:13,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:13,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 20:48:13,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 20:48:13,727 INFO L87 Difference]: Start difference. First operand 390 states and 563 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:48:13,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:13,894 INFO L93 Difference]: Finished difference Result 962 states and 1393 transitions. [2025-01-09 20:48:13,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 20:48:13,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2025-01-09 20:48:13,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:13,900 INFO L225 Difference]: With dead ends: 962 [2025-01-09 20:48:13,901 INFO L226 Difference]: Without dead ends: 773 [2025-01-09 20:48:13,903 INFO L434 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 [2025-01-09 20:48:13,904 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 547 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:13,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 1626 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:48:13,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2025-01-09 20:48:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 392. [2025-01-09 20:48:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 386 states have (on average 1.4481865284974094) internal successors, (559), 387 states have internal predecessors, (559), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:48:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 565 transitions. [2025-01-09 20:48:13,926 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 565 transitions. Word has length 10 [2025-01-09 20:48:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:13,927 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 565 transitions. [2025-01-09 20:48:13,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:48:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 565 transitions. [2025-01-09 20:48:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-01-09 20:48:13,929 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:13,929 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:48:13,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 20:48:13,930 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:13,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:13,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1358637611, now seen corresponding path program 1 times [2025-01-09 20:48:13,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:13,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093835897] [2025-01-09 20:48:13,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:13,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:14,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-01-09 20:48:14,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-01-09 20:48:14,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:14,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:48:14,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:14,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093835897] [2025-01-09 20:48:14,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093835897] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:14,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:14,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 20:48:14,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953449894] [2025-01-09 20:48:14,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:14,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 20:48:14,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:14,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 20:48:14,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 20:48:14,460 INFO L87 Difference]: Start difference. First operand 392 states and 565 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:48:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:14,564 INFO L93 Difference]: Finished difference Result 738 states and 1060 transitions. [2025-01-09 20:48:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 20:48:14,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2025-01-09 20:48:14,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:14,568 INFO L225 Difference]: With dead ends: 738 [2025-01-09 20:48:14,568 INFO L226 Difference]: Without dead ends: 350 [2025-01-09 20:48:14,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 20:48:14,570 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 30 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:14,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1365 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:48:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2025-01-09 20:48:14,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2025-01-09 20:48:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 344 states have (on average 1.4011627906976745) internal successors, (482), 345 states have internal predecessors, (482), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:48:14,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 488 transitions. [2025-01-09 20:48:14,595 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 488 transitions. Word has length 86 [2025-01-09 20:48:14,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:14,596 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 488 transitions. [2025-01-09 20:48:14,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:48:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 488 transitions. [2025-01-09 20:48:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-01-09 20:48:14,599 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:14,599 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:48:14,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 20:48:14,600 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:14,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1243871431, now seen corresponding path program 1 times [2025-01-09 20:48:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:14,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835556504] [2025-01-09 20:48:14,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:14,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:14,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-01-09 20:48:14,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-01-09 20:48:14,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:14,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:48:14,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:14,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835556504] [2025-01-09 20:48:14,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835556504] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:14,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:14,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 20:48:14,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27113226] [2025-01-09 20:48:14,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:14,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 20:48:14,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:14,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 20:48:14,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:48:14,846 INFO L87 Difference]: Start difference. First operand 350 states and 488 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:48:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:14,920 INFO L93 Difference]: Finished difference Result 696 states and 972 transitions. [2025-01-09 20:48:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 20:48:14,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2025-01-09 20:48:14,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:14,924 INFO L225 Difference]: With dead ends: 696 [2025-01-09 20:48:14,924 INFO L226 Difference]: Without dead ends: 350 [2025-01-09 20:48:14,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:48:14,925 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 1 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:14,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 926 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:48:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2025-01-09 20:48:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2025-01-09 20:48:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 344 states have (on average 1.3924418604651163) internal successors, (479), 345 states have internal predecessors, (479), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:48:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 485 transitions. [2025-01-09 20:48:14,950 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 485 transitions. Word has length 86 [2025-01-09 20:48:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:14,950 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 485 transitions. [2025-01-09 20:48:14,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:48:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 485 transitions. [2025-01-09 20:48:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-01-09 20:48:14,952 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:14,955 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:48:14,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 20:48:14,955 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:14,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:14,956 INFO L85 PathProgramCache]: Analyzing trace with hash 403393205, now seen corresponding path program 1 times [2025-01-09 20:48:14,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:14,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894569983] [2025-01-09 20:48:14,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:14,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:15,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-01-09 20:48:15,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-01-09 20:48:15,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:15,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:48:15,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894569983] [2025-01-09 20:48:15,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894569983] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:15,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:15,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 20:48:15,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845982547] [2025-01-09 20:48:15,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:15,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 20:48:15,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:15,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 20:48:15,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:48:15,195 INFO L87 Difference]: Start difference. First operand 350 states and 485 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:48:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:15,305 INFO L93 Difference]: Finished difference Result 949 states and 1325 transitions. [2025-01-09 20:48:15,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 20:48:15,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2025-01-09 20:48:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:15,310 INFO L225 Difference]: With dead ends: 949 [2025-01-09 20:48:15,312 INFO L226 Difference]: Without dead ends: 603 [2025-01-09 20:48:15,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:48:15,313 INFO L435 NwaCegarLoop]: 667 mSDtfsCounter, 297 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:15,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1123 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:48:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2025-01-09 20:48:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 596. [2025-01-09 20:48:15,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 590 states have (on average 1.4084745762711866) internal successors, (831), 591 states have internal predecessors, (831), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:48:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 837 transitions. [2025-01-09 20:48:15,341 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 837 transitions. Word has length 86 [2025-01-09 20:48:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:15,342 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 837 transitions. [2025-01-09 20:48:15,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 20:48:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 837 transitions. [2025-01-09 20:48:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-01-09 20:48:15,347 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:15,347 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:48:15,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 20:48:15,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:15,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash 766507820, now seen corresponding path program 1 times [2025-01-09 20:48:15,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:15,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140735062] [2025-01-09 20:48:15,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:15,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:15,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-01-09 20:48:15,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-01-09 20:48:15,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:15,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 20:48:15,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:15,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140735062] [2025-01-09 20:48:15,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140735062] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:15,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:15,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 20:48:15,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349130781] [2025-01-09 20:48:15,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:15,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 20:48:15,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:15,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 20:48:15,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 20:48:15,812 INFO L87 Difference]: Start difference. First operand 596 states and 837 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:15,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:15,922 INFO L93 Difference]: Finished difference Result 877 states and 1234 transitions. [2025-01-09 20:48:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 20:48:15,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2025-01-09 20:48:15,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:15,929 INFO L225 Difference]: With dead ends: 877 [2025-01-09 20:48:15,929 INFO L226 Difference]: Without dead ends: 873 [2025-01-09 20:48:15,930 INFO L434 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 [2025-01-09 20:48:15,930 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 457 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:15,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1377 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:48:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2025-01-09 20:48:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 598. [2025-01-09 20:48:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 592 states have (on average 1.4070945945945945) internal successors, (833), 593 states have internal predecessors, (833), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:48:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 839 transitions. [2025-01-09 20:48:15,962 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 839 transitions. Word has length 101 [2025-01-09 20:48:15,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:15,963 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 839 transitions. [2025-01-09 20:48:15,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 839 transitions. [2025-01-09 20:48:15,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 20:48:15,965 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:15,965 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:48:15,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 20:48:15,968 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:15,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:15,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1623959334, now seen corresponding path program 1 times [2025-01-09 20:48:15,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:15,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382264611] [2025-01-09 20:48:15,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:15,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:16,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 20:48:16,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 20:48:16,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:16,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 20:48:16,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:16,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382264611] [2025-01-09 20:48:16,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382264611] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:16,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:16,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 20:48:16,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294888619] [2025-01-09 20:48:16,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:16,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 20:48:16,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:16,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 20:48:16,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 20:48:16,253 INFO L87 Difference]: Start difference. First operand 598 states and 839 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:16,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:16,335 INFO L93 Difference]: Finished difference Result 951 states and 1355 transitions. [2025-01-09 20:48:16,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 20:48:16,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 154 [2025-01-09 20:48:16,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:16,338 INFO L225 Difference]: With dead ends: 951 [2025-01-09 20:48:16,338 INFO L226 Difference]: Without dead ends: 604 [2025-01-09 20:48:16,339 INFO L434 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 [2025-01-09 20:48:16,340 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 105 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:16,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1266 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:48:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2025-01-09 20:48:16,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 598. [2025-01-09 20:48:16,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 592 states have (on average 1.383445945945946) internal successors, (819), 593 states have internal predecessors, (819), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:48:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 825 transitions. [2025-01-09 20:48:16,362 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 825 transitions. Word has length 154 [2025-01-09 20:48:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:16,363 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 825 transitions. [2025-01-09 20:48:16,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 825 transitions. [2025-01-09 20:48:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 20:48:16,365 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:16,365 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:48:16,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 20:48:16,365 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:16,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:16,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1499493838, now seen corresponding path program 1 times [2025-01-09 20:48:16,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:16,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905331421] [2025-01-09 20:48:16,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:16,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:16,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 20:48:16,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 20:48:16,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:16,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:48:16,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:16,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905331421] [2025-01-09 20:48:16,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905331421] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:16,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:16,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 20:48:16,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228624780] [2025-01-09 20:48:16,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:16,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 20:48:16,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:16,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 20:48:16,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 20:48:16,625 INFO L87 Difference]: Start difference. First operand 598 states and 825 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:17,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:17,057 INFO L93 Difference]: Finished difference Result 1535 states and 2137 transitions. [2025-01-09 20:48:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 20:48:17,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 154 [2025-01-09 20:48:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:17,063 INFO L225 Difference]: With dead ends: 1535 [2025-01-09 20:48:17,063 INFO L226 Difference]: Without dead ends: 1028 [2025-01-09 20:48:17,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-09 20:48:17,067 INFO L435 NwaCegarLoop]: 574 mSDtfsCounter, 1357 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:17,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 1365 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 20:48:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2025-01-09 20:48:17,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 778. [2025-01-09 20:48:17,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 772 states have (on average 1.395077720207254) internal successors, (1077), 773 states have internal predecessors, (1077), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 20:48:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1083 transitions. [2025-01-09 20:48:17,094 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1083 transitions. Word has length 154 [2025-01-09 20:48:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:17,094 INFO L471 AbstractCegarLoop]: Abstraction has 778 states and 1083 transitions. [2025-01-09 20:48:17,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1083 transitions. [2025-01-09 20:48:17,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-01-09 20:48:17,096 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:17,096 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:48:17,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 20:48:17,097 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:17,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:17,097 INFO L85 PathProgramCache]: Analyzing trace with hash 159861917, now seen corresponding path program 1 times [2025-01-09 20:48:17,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:17,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390754560] [2025-01-09 20:48:17,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:17,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:17,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-01-09 20:48:17,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-01-09 20:48:17,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:17,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:48:17,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:17,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390754560] [2025-01-09 20:48:17,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390754560] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:48:17,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456597128] [2025-01-09 20:48:17,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:17,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:48:17,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:48:17,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 20:48:17,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 20:48:18,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-01-09 20:48:18,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-01-09 20:48:18,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:18,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:18,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 20:48:18,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:48:18,379 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 [2025-01-09 20:48:18,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-01-09 20:48:18,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-09 20:48:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:48:18,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 20:48:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:48:18,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456597128] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 20:48:18,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 20:48:18,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2025-01-09 20:48:18,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760876180] [2025-01-09 20:48:18,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 20:48:18,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 20:48:18,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:18,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 20:48:18,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-01-09 20:48:18,876 INFO L87 Difference]: Start difference. First operand 778 states and 1083 transitions. Second operand has 11 states, 11 states have (on average 29.545454545454547) internal successors, (325), 11 states have internal predecessors, (325), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 20:48:19,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:19,198 INFO L93 Difference]: Finished difference Result 3585 states and 5044 transitions. [2025-01-09 20:48:19,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 20:48:19,198 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 29.545454545454547) internal successors, (325), 11 states have internal predecessors, (325), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 164 [2025-01-09 20:48:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:19,211 INFO L225 Difference]: With dead ends: 3585 [2025-01-09 20:48:19,211 INFO L226 Difference]: Without dead ends: 3055 [2025-01-09 20:48:19,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 321 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-01-09 20:48:19,214 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 3046 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:19,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3215 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 20:48:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2025-01-09 20:48:19,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 1125. [2025-01-09 20:48:19,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1115 states have (on average 1.3704035874439462) internal successors, (1528), 1116 states have internal predecessors, (1528), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 20:48:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1540 transitions. [2025-01-09 20:48:19,300 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1540 transitions. Word has length 164 [2025-01-09 20:48:19,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:19,301 INFO L471 AbstractCegarLoop]: Abstraction has 1125 states and 1540 transitions. [2025-01-09 20:48:19,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.545454545454547) internal successors, (325), 11 states have internal predecessors, (325), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 20:48:19,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1540 transitions. [2025-01-09 20:48:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2025-01-09 20:48:19,308 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:19,309 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 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] [2025-01-09 20:48:19,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 20:48:19,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:48:19,513 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:19,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2067319245, now seen corresponding path program 1 times [2025-01-09 20:48:19,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:19,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740869798] [2025-01-09 20:48:19,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:19,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:19,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 392 statements into 1 equivalence classes. [2025-01-09 20:48:19,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 392 of 392 statements. [2025-01-09 20:48:19,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:19,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:48:22,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:22,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740869798] [2025-01-09 20:48:22,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740869798] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:48:22,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643324234] [2025-01-09 20:48:22,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:22,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:48:22,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:48:22,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 20:48:22,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 20:48:23,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 392 statements into 1 equivalence classes. [2025-01-09 20:48:23,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 392 of 392 statements. [2025-01-09 20:48:23,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:23,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:23,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 20:48:23,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:48:23,577 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 [2025-01-09 20:48:23,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-01-09 20:48:23,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:24,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:24,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:24,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-09 20:48:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:48:24,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 20:48:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:48:24,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643324234] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 20:48:24,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 20:48:24,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 19 [2025-01-09 20:48:24,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974970754] [2025-01-09 20:48:24,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 20:48:24,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 20:48:24,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:24,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 20:48:24,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2025-01-09 20:48:24,709 INFO L87 Difference]: Start difference. First operand 1125 states and 1540 transitions. Second operand has 19 states, 19 states have (on average 41.31578947368421) internal successors, (785), 19 states have internal predecessors, (785), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 20:48:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:25,509 INFO L93 Difference]: Finished difference Result 7611 states and 10717 transitions. [2025-01-09 20:48:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 20:48:25,510 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 41.31578947368421) internal successors, (785), 19 states have internal predecessors, (785), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 392 [2025-01-09 20:48:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:25,541 INFO L225 Difference]: With dead ends: 7611 [2025-01-09 20:48:25,541 INFO L226 Difference]: Without dead ends: 7081 [2025-01-09 20:48:25,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 775 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2025-01-09 20:48:25,545 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 10546 mSDsluCounter, 5475 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10556 SdHoareTripleChecker+Valid, 5976 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:25,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10556 Valid, 5976 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 20:48:25,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2025-01-09 20:48:25,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 1989. [2025-01-09 20:48:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1989 states, 1973 states have (on average 1.3461733400912317) internal successors, (2656), 1974 states have internal predecessors, (2656), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-01-09 20:48:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2680 transitions. [2025-01-09 20:48:25,689 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2680 transitions. Word has length 392 [2025-01-09 20:48:25,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:25,691 INFO L471 AbstractCegarLoop]: Abstraction has 1989 states and 2680 transitions. [2025-01-09 20:48:25,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 41.31578947368421) internal successors, (785), 19 states have internal predecessors, (785), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 20:48:25,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2680 transitions. [2025-01-09 20:48:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2025-01-09 20:48:25,715 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:25,716 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 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] [2025-01-09 20:48:25,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 20:48:25,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:48:25,917 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:25,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash 115843167, now seen corresponding path program 2 times [2025-01-09 20:48:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:25,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376518023] [2025-01-09 20:48:25,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 20:48:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:26,251 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 848 statements into 2 equivalence classes. [2025-01-09 20:48:26,282 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 73 of 848 statements. [2025-01-09 20:48:26,283 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 20:48:26,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2025-01-09 20:48:26,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:26,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376518023] [2025-01-09 20:48:26,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376518023] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:26,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:26,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 20:48:26,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964501790] [2025-01-09 20:48:26,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:26,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 20:48:26,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:26,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 20:48:26,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:48:26,579 INFO L87 Difference]: Start difference. First operand 1989 states and 2680 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:27,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:27,303 INFO L93 Difference]: Finished difference Result 2642 states and 3603 transitions. [2025-01-09 20:48:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 20:48:27,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 848 [2025-01-09 20:48:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:27,314 INFO L225 Difference]: With dead ends: 2642 [2025-01-09 20:48:27,315 INFO L226 Difference]: Without dead ends: 2115 [2025-01-09 20:48:27,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-09 20:48:27,317 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 20 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:27,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2065 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 20:48:27,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2025-01-09 20:48:27,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2079. [2025-01-09 20:48:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2079 states, 2063 states have (on average 1.341250605913718) internal successors, (2767), 2064 states have internal predecessors, (2767), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-01-09 20:48:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 2791 transitions. [2025-01-09 20:48:27,384 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 2791 transitions. Word has length 848 [2025-01-09 20:48:27,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:27,385 INFO L471 AbstractCegarLoop]: Abstraction has 2079 states and 2791 transitions. [2025-01-09 20:48:27,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:27,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 2791 transitions. [2025-01-09 20:48:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2025-01-09 20:48:27,406 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:27,406 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 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] [2025-01-09 20:48:27,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-09 20:48:27,406 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:27,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:27,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1428418850, now seen corresponding path program 1 times [2025-01-09 20:48:27,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:27,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210349220] [2025-01-09 20:48:27,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:27,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:27,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 849 statements into 1 equivalence classes. [2025-01-09 20:48:28,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 849 of 849 statements. [2025-01-09 20:48:28,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:28,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2025-01-09 20:48:29,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210349220] [2025-01-09 20:48:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210349220] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:29,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:29,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 20:48:29,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972395020] [2025-01-09 20:48:29,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:29,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 20:48:29,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:29,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 20:48:29,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-01-09 20:48:29,688 INFO L87 Difference]: Start difference. First operand 2079 states and 2791 transitions. Second operand has 8 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:30,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:30,315 INFO L93 Difference]: Finished difference Result 2768 states and 3765 transitions. [2025-01-09 20:48:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 20:48:30,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 849 [2025-01-09 20:48:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:30,326 INFO L225 Difference]: With dead ends: 2768 [2025-01-09 20:48:30,326 INFO L226 Difference]: Without dead ends: 2151 [2025-01-09 20:48:30,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 20:48:30,328 INFO L435 NwaCegarLoop]: 458 mSDtfsCounter, 25 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:30,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2120 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 20:48:30,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2025-01-09 20:48:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2106. [2025-01-09 20:48:30,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2090 states have (on average 1.3425837320574163) internal successors, (2806), 2091 states have internal predecessors, (2806), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-01-09 20:48:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2830 transitions. [2025-01-09 20:48:30,445 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2830 transitions. Word has length 849 [2025-01-09 20:48:30,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:30,447 INFO L471 AbstractCegarLoop]: Abstraction has 2106 states and 2830 transitions. [2025-01-09 20:48:30,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:30,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2830 transitions. [2025-01-09 20:48:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2025-01-09 20:48:30,455 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:30,455 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 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] [2025-01-09 20:48:30,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 20:48:30,455 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:30,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:30,456 INFO L85 PathProgramCache]: Analyzing trace with hash -824814933, now seen corresponding path program 1 times [2025-01-09 20:48:30,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:30,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304005215] [2025-01-09 20:48:30,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:30,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:30,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 850 statements into 1 equivalence classes. [2025-01-09 20:48:30,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 850 of 850 statements. [2025-01-09 20:48:30,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:30,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2025-01-09 20:48:32,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:32,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304005215] [2025-01-09 20:48:32,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304005215] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:32,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:32,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 20:48:32,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852136371] [2025-01-09 20:48:32,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:32,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 20:48:32,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:32,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 20:48:32,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-01-09 20:48:32,997 INFO L87 Difference]: Start difference. First operand 2106 states and 2830 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:33,805 INFO L93 Difference]: Finished difference Result 2792 states and 3798 transitions. [2025-01-09 20:48:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 20:48:33,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 850 [2025-01-09 20:48:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:33,815 INFO L225 Difference]: With dead ends: 2792 [2025-01-09 20:48:33,815 INFO L226 Difference]: Without dead ends: 2148 [2025-01-09 20:48:33,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-01-09 20:48:33,818 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 31 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:33,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2899 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 20:48:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2025-01-09 20:48:33,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2130. [2025-01-09 20:48:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 2114 states have (on average 1.3415326395458846) internal successors, (2836), 2115 states have internal predecessors, (2836), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-01-09 20:48:33,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 2860 transitions. [2025-01-09 20:48:33,881 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 2860 transitions. Word has length 850 [2025-01-09 20:48:33,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:33,882 INFO L471 AbstractCegarLoop]: Abstraction has 2130 states and 2860 transitions. [2025-01-09 20:48:33,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 2860 transitions. [2025-01-09 20:48:33,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2025-01-09 20:48:33,890 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:33,891 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 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] [2025-01-09 20:48:33,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 20:48:33,891 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:33,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:33,892 INFO L85 PathProgramCache]: Analyzing trace with hash -600090876, now seen corresponding path program 1 times [2025-01-09 20:48:33,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:33,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614102527] [2025-01-09 20:48:33,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:33,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:34,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 850 statements into 1 equivalence classes. [2025-01-09 20:48:34,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 850 of 850 statements. [2025-01-09 20:48:34,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:34,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2025-01-09 20:48:35,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614102527] [2025-01-09 20:48:35,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614102527] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:35,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:35,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 20:48:35,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942877105] [2025-01-09 20:48:35,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:35,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 20:48:35,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:35,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 20:48:35,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:48:35,997 INFO L87 Difference]: Start difference. First operand 2130 states and 2860 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:36,417 INFO L93 Difference]: Finished difference Result 2831 states and 3843 transitions. [2025-01-09 20:48:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 20:48:36,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 850 [2025-01-09 20:48:36,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:36,428 INFO L225 Difference]: With dead ends: 2831 [2025-01-09 20:48:36,428 INFO L226 Difference]: Without dead ends: 2163 [2025-01-09 20:48:36,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:48:36,430 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 16 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:36,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1490 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 20:48:36,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2025-01-09 20:48:36,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2139. [2025-01-09 20:48:36,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 2123 states have (on average 1.3400847856806406) internal successors, (2845), 2124 states have internal predecessors, (2845), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-01-09 20:48:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2869 transitions. [2025-01-09 20:48:36,518 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2869 transitions. Word has length 850 [2025-01-09 20:48:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:36,520 INFO L471 AbstractCegarLoop]: Abstraction has 2139 states and 2869 transitions. [2025-01-09 20:48:36,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:36,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2869 transitions. [2025-01-09 20:48:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2025-01-09 20:48:36,533 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:36,533 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 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] [2025-01-09 20:48:36,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-09 20:48:36,534 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:36,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:36,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2115770847, now seen corresponding path program 1 times [2025-01-09 20:48:36,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:36,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423276651] [2025-01-09 20:48:36,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:36,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:36,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 851 statements into 1 equivalence classes. [2025-01-09 20:48:37,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 851 of 851 statements. [2025-01-09 20:48:37,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:37,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:48:45,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:45,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423276651] [2025-01-09 20:48:45,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423276651] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:48:45,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447253340] [2025-01-09 20:48:45,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:45,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:48:45,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:48:45,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 20:48:45,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 20:48:45,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 851 statements into 1 equivalence classes. [2025-01-09 20:48:46,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 851 of 851 statements. [2025-01-09 20:48:46,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:46,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:46,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 4158 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-09 20:48:46,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:48:46,481 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 [2025-01-09 20:48:46,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-01-09 20:48:46,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:47,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:47,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:47,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:47,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:47,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:47,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:47,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:47,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-01-09 20:48:47,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-09 20:48:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:48:47,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 20:48:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 20:48:48,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447253340] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 20:48:48,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 20:48:48,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 14] total 32 [2025-01-09 20:48:48,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547452556] [2025-01-09 20:48:48,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 20:48:48,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 20:48:48,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:48,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 20:48:48,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=582, Unknown=0, NotChecked=0, Total=992 [2025-01-09 20:48:48,843 INFO L87 Difference]: Start difference. First operand 2139 states and 2869 transitions. Second operand has 32 states, 32 states have (on average 53.1875) internal successors, (1702), 32 states have internal predecessors, (1702), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 20:48:50,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:50,814 INFO L93 Difference]: Finished difference Result 19163 states and 26473 transitions. [2025-01-09 20:48:50,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-01-09 20:48:50,816 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 53.1875) internal successors, (1702), 32 states have internal predecessors, (1702), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 851 [2025-01-09 20:48:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:50,874 INFO L225 Difference]: With dead ends: 19163 [2025-01-09 20:48:50,875 INFO L226 Difference]: Without dead ends: 18483 [2025-01-09 20:48:50,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1739 GetRequests, 1688 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=871, Invalid=1579, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 20:48:50,884 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 20735 mSDsluCounter, 12168 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20757 SdHoareTripleChecker+Valid, 12669 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:50,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20757 Valid, 12669 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 20:48:50,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18483 states. [2025-01-09 20:48:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18483 to 3867. [2025-01-09 20:48:51,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3867 states, 3839 states have (on average 1.3287314404792916) internal successors, (5101), 3840 states have internal predecessors, (5101), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-01-09 20:48:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3867 states to 3867 states and 5149 transitions. [2025-01-09 20:48:51,126 INFO L78 Accepts]: Start accepts. Automaton has 3867 states and 5149 transitions. Word has length 851 [2025-01-09 20:48:51,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:51,127 INFO L471 AbstractCegarLoop]: Abstraction has 3867 states and 5149 transitions. [2025-01-09 20:48:51,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 53.1875) internal successors, (1702), 32 states have internal predecessors, (1702), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 20:48:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3867 states and 5149 transitions. [2025-01-09 20:48:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1764 [2025-01-09 20:48:51,156 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:51,157 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 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] [2025-01-09 20:48:51,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 20:48:51,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:48:51,358 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:51,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash -184502583, now seen corresponding path program 2 times [2025-01-09 20:48:51,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:51,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199339455] [2025-01-09 20:48:51,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 20:48:51,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:51,873 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1763 statements into 2 equivalence classes. [2025-01-09 20:48:51,916 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 76 of 1763 statements. [2025-01-09 20:48:51,916 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 20:48:51,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:48:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 17562 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17562 trivial. 0 not checked. [2025-01-09 20:48:52,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:48:52,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199339455] [2025-01-09 20:48:52,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199339455] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:48:52,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:48:52,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 20:48:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015076842] [2025-01-09 20:48:52,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:48:52,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 20:48:52,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:48:52,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 20:48:52,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-09 20:48:52,157 INFO L87 Difference]: Start difference. First operand 3867 states and 5149 transitions. Second operand has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:48:52,817 INFO L93 Difference]: Finished difference Result 4825 states and 6479 transitions. [2025-01-09 20:48:52,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 20:48:52,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1763 [2025-01-09 20:48:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:48:52,829 INFO L225 Difference]: With dead ends: 4825 [2025-01-09 20:48:52,829 INFO L226 Difference]: Without dead ends: 4148 [2025-01-09 20:48:52,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2025-01-09 20:48:52,831 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 541 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 20:48:52,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 2464 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 20:48:52,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2025-01-09 20:48:52,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3895. [2025-01-09 20:48:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 3867 states have (on average 1.3276441686061546) internal successors, (5134), 3868 states have internal predecessors, (5134), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-01-09 20:48:52,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 5182 transitions. [2025-01-09 20:48:52,993 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 5182 transitions. Word has length 1763 [2025-01-09 20:48:52,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:48:52,995 INFO L471 AbstractCegarLoop]: Abstraction has 3895 states and 5182 transitions. [2025-01-09 20:48:52,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:48:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 5182 transitions. [2025-01-09 20:48:53,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1764 [2025-01-09 20:48:53,036 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:48:53,037 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 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] [2025-01-09 20:48:53,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-09 20:48:53,037 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 20:48:53,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:48:53,038 INFO L85 PathProgramCache]: Analyzing trace with hash -965623779, now seen corresponding path program 1 times [2025-01-09 20:48:53,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:48:53,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943744509] [2025-01-09 20:48:53,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:48:53,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:48:53,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1763 statements into 1 equivalence classes. [2025-01-09 20:48:54,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1763 of 1763 statements. [2025-01-09 20:48:54,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:48:54,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat