./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 06:16:57,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 06:16:57,578 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 06:16:57,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 06:16:57,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 06:16:57,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 06:16:57,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 06:16:57,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 06:16:57,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 06:16:57,606 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 06:16:57,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 06:16:57,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 06:16:57,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 06:16:57,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 06:16:57,607 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 06:16:57,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 06:16:57,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 06:16:57,608 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 06:16:57,608 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 06:16:57,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 06:16:57,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 06:16:57,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 06:16:57,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 06:16:57,608 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 06:16:57,608 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 06:16:57,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 06:16:57,609 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 06:16:57,609 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 06:16:57,609 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 06:16:57,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 06:16:57,609 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 06:16:57,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 06:16:57,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 06:16:57,610 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 06:16:57,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 06:16:57,610 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 06:16:57,610 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 06:16:57,610 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 06:16:57,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 06:16:57,610 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 06:16:57,610 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 06:16:57,610 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 06:16:57,610 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 06:16:57,610 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/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 -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2025-03-04 06:16:57,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 06:16:57,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 06:16:57,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 06:16:57,846 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 06:16:57,846 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 06:16:57,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2025-03-04 06:16:59,014 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fff1137b/5d712f5f03b24d0e8adca014fd1d10fd/FLAG38ef501f6 [2025-03-04 06:16:59,315 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 06:16:59,317 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2025-03-04 06:16:59,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fff1137b/5d712f5f03b24d0e8adca014fd1d10fd/FLAG38ef501f6 [2025-03-04 06:16:59,585 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fff1137b/5d712f5f03b24d0e8adca014fd1d10fd [2025-03-04 06:16:59,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 06:16:59,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 06:16:59,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 06:16:59,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 06:16:59,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 06:16:59,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 06:16:59" (1/1) ... [2025-03-04 06:16:59,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c700d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:16:59, skipping insertion in model container [2025-03-04 06:16:59,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 06:16:59" (1/1) ... [2025-03-04 06:16:59,631 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 06:16:59,910 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2025-03-04 06:17:00,012 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2025-03-04 06:17:00,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 06:17:00,043 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 06:17:00,070 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2025-03-04 06:17:00,132 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2025-03-04 06:17:00,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 06:17:00,174 INFO L204 MainTranslator]: Completed translation [2025-03-04 06:17:00,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00 WrapperNode [2025-03-04 06:17:00,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 06:17:00,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 06:17:00,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 06:17:00,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 06:17:00,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,262 INFO L138 Inliner]: procedures = 177, calls = 340, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1540 [2025-03-04 06:17:00,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 06:17:00,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 06:17:00,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 06:17:00,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 06:17:00,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,279 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,359 INFO L175 MemorySlicer]: Split 304 memory accesses to 3 slices as follows [2, 34, 268]. 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, 4, 58]. [2025-03-04 06:17:00,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,389 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,395 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 06:17:00,415 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 06:17:00,415 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 06:17:00,415 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 06:17:00,417 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (1/1) ... [2025-03-04 06:17:00,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 06:17:00,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 06:17:00,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 06:17:00,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 06:17:00,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 06:17:00,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 06:17:00,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 06:17:00,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 06:17:00,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 06:17:00,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 06:17:00,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 06:17:00,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 06:17:00,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 06:17:00,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 06:17:00,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-04 06:17:00,481 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 06:17:00,481 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 06:17:00,481 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-04 06:17:00,481 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2025-03-04 06:17:00,481 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2025-03-04 06:17:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 06:17:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 06:17:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 06:17:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 06:17:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 06:17:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 06:17:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 06:17:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 06:17:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 06:17:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 06:17:00,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 06:17:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 06:17:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 06:17:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 06:17:00,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 06:17:00,660 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 06:17:00,661 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 06:17:01,733 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L763: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-04 06:17:01,824 INFO L? ?]: Removed 354 outVars from TransFormulas that were not future-live. [2025-03-04 06:17:01,824 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 06:17:01,870 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 06:17:01,871 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-04 06:17:01,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 06:17:01 BoogieIcfgContainer [2025-03-04 06:17:01,871 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 06:17:01,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 06:17:01,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 06:17:01,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 06:17:01,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 06:16:59" (1/3) ... [2025-03-04 06:17:01,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fb302d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 06:17:01, skipping insertion in model container [2025-03-04 06:17:01,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:17:00" (2/3) ... [2025-03-04 06:17:01,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fb302d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 06:17:01, skipping insertion in model container [2025-03-04 06:17:01,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 06:17:01" (3/3) ... [2025-03-04 06:17:01,877 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test8-2.i [2025-03-04 06:17:01,886 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 06:17:01,887 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test8-2.i that has 6 procedures, 471 locations, 1 initial locations, 40 loop locations, and 2 error locations. [2025-03-04 06:17:01,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 06:17:01,942 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;@2cde11dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 06:17:01,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 06:17:01,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 463 states, 437 states have (on average 1.6270022883295194) internal successors, (711), 454 states have internal predecessors, (711), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 06:17:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-04 06:17:01,949 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:01,949 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:01,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:01,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:01,954 INFO L85 PathProgramCache]: Analyzing trace with hash 620726640, now seen corresponding path program 1 times [2025-03-04 06:17:01,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:01,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352170974] [2025-03-04 06:17:01,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:01,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:02,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 06:17:02,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 06:17:02,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:02,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 06:17:02,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:02,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352170974] [2025-03-04 06:17:02,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352170974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:02,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:17:02,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 06:17:02,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813121595] [2025-03-04 06:17:02,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:02,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 06:17:02,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:02,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 06:17:02,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 06:17:02,101 INFO L87 Difference]: Start difference. First operand has 463 states, 437 states have (on average 1.6270022883295194) internal successors, (711), 454 states have internal predecessors, (711), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 06:17:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:02,208 INFO L93 Difference]: Finished difference Result 924 states and 1517 transitions. [2025-03-04 06:17:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 06:17:02,209 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-04 06:17:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:02,217 INFO L225 Difference]: With dead ends: 924 [2025-03-04 06:17:02,218 INFO L226 Difference]: Without dead ends: 426 [2025-03-04 06:17:02,222 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 [2025-03-04 06:17:02,224 INFO L435 NwaCegarLoop]: 636 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:02,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 636 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 06:17:02,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2025-03-04 06:17:02,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2025-03-04 06:17:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 401 states have (on average 1.4688279301745637) internal successors, (589), 417 states have internal predecessors, (589), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 06:17:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 629 transitions. [2025-03-04 06:17:02,279 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 629 transitions. Word has length 9 [2025-03-04 06:17:02,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:02,279 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 629 transitions. [2025-03-04 06:17:02,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 06:17:02,279 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 629 transitions. [2025-03-04 06:17:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-04 06:17:02,281 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:02,281 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:02,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 06:17:02,282 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:02,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash 296388285, now seen corresponding path program 1 times [2025-03-04 06:17:02,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:02,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246669950] [2025-03-04 06:17:02,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:02,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:02,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-04 06:17:02,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-04 06:17:02,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:02,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 06:17:02,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246669950] [2025-03-04 06:17:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246669950] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:02,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:17:02,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 06:17:02,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920114464] [2025-03-04 06:17:02,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:02,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 06:17:02,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:02,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 06:17:02,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 06:17:02,700 INFO L87 Difference]: Start difference. First operand 426 states and 629 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 06:17:02,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:02,962 INFO L93 Difference]: Finished difference Result 1031 states and 1523 transitions. [2025-03-04 06:17:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 06:17:02,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-03-04 06:17:02,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:02,966 INFO L225 Difference]: With dead ends: 1031 [2025-03-04 06:17:02,966 INFO L226 Difference]: Without dead ends: 805 [2025-03-04 06:17:02,967 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 [2025-03-04 06:17:02,967 INFO L435 NwaCegarLoop]: 568 mSDtfsCounter, 541 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:02,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1696 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 06:17:02,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2025-03-04 06:17:02,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 428. [2025-03-04 06:17:02,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 403 states have (on average 1.466501240694789) internal successors, (591), 419 states have internal predecessors, (591), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 06:17:02,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 631 transitions. [2025-03-04 06:17:02,990 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 631 transitions. Word has length 62 [2025-03-04 06:17:02,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:02,990 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 631 transitions. [2025-03-04 06:17:02,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 06:17:02,991 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 631 transitions. [2025-03-04 06:17:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-04 06:17:02,994 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:02,994 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:02,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 06:17:02,996 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:02,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1479029304, now seen corresponding path program 1 times [2025-03-04 06:17:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:02,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113523861] [2025-03-04 06:17:02,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:03,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-04 06:17:03,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-04 06:17:03,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:03,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 06:17:03,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:03,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113523861] [2025-03-04 06:17:03,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113523861] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:03,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:17:03,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 06:17:03,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087425065] [2025-03-04 06:17:03,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:03,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 06:17:03,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:03,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 06:17:03,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 06:17:03,277 INFO L87 Difference]: Start difference. First operand 428 states and 631 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 06:17:03,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:03,428 INFO L93 Difference]: Finished difference Result 810 states and 1192 transitions. [2025-03-04 06:17:03,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 06:17:03,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2025-03-04 06:17:03,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:03,430 INFO L225 Difference]: With dead ends: 810 [2025-03-04 06:17:03,430 INFO L226 Difference]: Without dead ends: 386 [2025-03-04 06:17:03,431 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 [2025-03-04 06:17:03,435 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 30 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:03,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1466 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 06:17:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2025-03-04 06:17:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2025-03-04 06:17:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 361 states have (on average 1.4238227146814404) internal successors, (514), 377 states have internal predecessors, (514), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 06:17:03,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 554 transitions. [2025-03-04 06:17:03,453 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 554 transitions. Word has length 83 [2025-03-04 06:17:03,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:03,453 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 554 transitions. [2025-03-04 06:17:03,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 06:17:03,453 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 554 transitions. [2025-03-04 06:17:03,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-04 06:17:03,454 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:03,455 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:03,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 06:17:03,455 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:03,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash -929024782, now seen corresponding path program 1 times [2025-03-04 06:17:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:03,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132175141] [2025-03-04 06:17:03,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:03,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:03,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-04 06:17:03,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-04 06:17:03,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:03,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 06:17:03,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:03,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132175141] [2025-03-04 06:17:03,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132175141] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:03,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:17:03,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 06:17:03,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24275912] [2025-03-04 06:17:03,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:03,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 06:17:03,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:03,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 06:17:03,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 06:17:03,647 INFO L87 Difference]: Start difference. First operand 386 states and 554 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 06:17:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:03,810 INFO L93 Difference]: Finished difference Result 1016 states and 1462 transitions. [2025-03-04 06:17:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 06:17:03,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2025-03-04 06:17:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:03,813 INFO L225 Difference]: With dead ends: 1016 [2025-03-04 06:17:03,813 INFO L226 Difference]: Without dead ends: 634 [2025-03-04 06:17:03,814 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 [2025-03-04 06:17:03,814 INFO L435 NwaCegarLoop]: 681 mSDtfsCounter, 293 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:03,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1171 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 06:17:03,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2025-03-04 06:17:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 631. [2025-03-04 06:17:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 605 states have (on average 1.431404958677686) internal successors, (866), 621 states have internal predecessors, (866), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-04 06:17:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 908 transitions. [2025-03-04 06:17:03,828 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 908 transitions. Word has length 83 [2025-03-04 06:17:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:03,828 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 908 transitions. [2025-03-04 06:17:03,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 06:17:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 908 transitions. [2025-03-04 06:17:03,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-04 06:17:03,829 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:03,829 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:03,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 06:17:03,830 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:03,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash 764968475, now seen corresponding path program 1 times [2025-03-04 06:17:03,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:03,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098306239] [2025-03-04 06:17:03,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:03,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:03,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-04 06:17:03,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-04 06:17:03,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:03,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 06:17:04,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:04,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098306239] [2025-03-04 06:17:04,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098306239] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 06:17:04,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371883341] [2025-03-04 06:17:04,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:04,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:04,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 06:17:04,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 06:17:04,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 06:17:04,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-04 06:17:04,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-04 06:17:04,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:04,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:04,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-04 06:17:04,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 06:17:04,461 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 [2025-03-04 06:17:04,485 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 22 treesize of output 7 [2025-03-04 06:17:04,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 06:17:04,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2025-03-04 06:17:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 06:17:05,042 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 06:17:05,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371883341] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:05,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 06:17:05,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2025-03-04 06:17:05,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011956566] [2025-03-04 06:17:05,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:05,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 06:17:05,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:05,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 06:17:05,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2025-03-04 06:17:05,047 INFO L87 Difference]: Start difference. First operand 631 states and 908 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:06,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:06,039 INFO L93 Difference]: Finished difference Result 1515 states and 2181 transitions. [2025-03-04 06:17:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 06:17:06,041 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2025-03-04 06:17:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:06,044 INFO L225 Difference]: With dead ends: 1515 [2025-03-04 06:17:06,045 INFO L226 Difference]: Without dead ends: 926 [2025-03-04 06:17:06,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2025-03-04 06:17:06,047 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 596 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:06,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 2756 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-04 06:17:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2025-03-04 06:17:06,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 631. [2025-03-04 06:17:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 605 states have (on average 1.4297520661157024) internal successors, (865), 621 states have internal predecessors, (865), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-04 06:17:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 907 transitions. [2025-03-04 06:17:06,071 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 907 transitions. Word has length 98 [2025-03-04 06:17:06,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:06,071 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 907 transitions. [2025-03-04 06:17:06,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 907 transitions. [2025-03-04 06:17:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-04 06:17:06,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:06,073 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:06,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 06:17:06,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:06,273 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:06,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash 730062964, now seen corresponding path program 1 times [2025-03-04 06:17:06,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:06,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270830759] [2025-03-04 06:17:06,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:06,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:06,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-04 06:17:06,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-04 06:17:06,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:06,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 06:17:06,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:06,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270830759] [2025-03-04 06:17:06,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270830759] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 06:17:06,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846340439] [2025-03-04 06:17:06,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:06,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:06,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 06:17:06,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 06:17:06,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 06:17:06,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-04 06:17:06,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-04 06:17:06,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:06,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:06,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-04 06:17:06,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 06:17:06,842 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 [2025-03-04 06:17:06,855 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 22 treesize of output 7 [2025-03-04 06:17:07,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 06:17:07,536 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 06:17:07,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846340439] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:07,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 06:17:07,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2025-03-04 06:17:07,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195394955] [2025-03-04 06:17:07,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:07,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 06:17:07,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:07,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 06:17:07,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-03-04 06:17:07,539 INFO L87 Difference]: Start difference. First operand 631 states and 907 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:08,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:08,755 INFO L93 Difference]: Finished difference Result 1530 states and 2201 transitions. [2025-03-04 06:17:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 06:17:08,756 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2025-03-04 06:17:08,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:08,760 INFO L225 Difference]: With dead ends: 1530 [2025-03-04 06:17:08,760 INFO L226 Difference]: Without dead ends: 946 [2025-03-04 06:17:08,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2025-03-04 06:17:08,761 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 648 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:08,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 3178 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 06:17:08,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2025-03-04 06:17:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 647. [2025-03-04 06:17:08,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 621 states have (on average 1.4251207729468598) internal successors, (885), 637 states have internal predecessors, (885), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-04 06:17:08,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 927 transitions. [2025-03-04 06:17:08,785 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 927 transitions. Word has length 99 [2025-03-04 06:17:08,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:08,785 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 927 transitions. [2025-03-04 06:17:08,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:08,786 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 927 transitions. [2025-03-04 06:17:08,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-04 06:17:08,786 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:08,786 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:08,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 06:17:08,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-04 06:17:08,987 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:08,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:08,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1157423764, now seen corresponding path program 1 times [2025-03-04 06:17:08,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:08,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142970528] [2025-03-04 06:17:08,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:08,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:09,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-04 06:17:09,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-04 06:17:09,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:09,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 06:17:09,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:09,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142970528] [2025-03-04 06:17:09,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142970528] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:09,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:17:09,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 06:17:09,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426671899] [2025-03-04 06:17:09,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:09,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 06:17:09,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:09,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 06:17:09,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 06:17:09,235 INFO L87 Difference]: Start difference. First operand 647 states and 927 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:09,572 INFO L93 Difference]: Finished difference Result 1248 states and 1801 transitions. [2025-03-04 06:17:09,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 06:17:09,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2025-03-04 06:17:09,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:09,577 INFO L225 Difference]: With dead ends: 1248 [2025-03-04 06:17:09,577 INFO L226 Difference]: Without dead ends: 657 [2025-03-04 06:17:09,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 06:17:09,579 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 14 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:09,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2684 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 06:17:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2025-03-04 06:17:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 655. [2025-03-04 06:17:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 629 states have (on average 1.4228934817170111) internal successors, (895), 645 states have internal predecessors, (895), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-04 06:17:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 937 transitions. [2025-03-04 06:17:09,594 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 937 transitions. Word has length 100 [2025-03-04 06:17:09,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:09,594 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 937 transitions. [2025-03-04 06:17:09,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 937 transitions. [2025-03-04 06:17:09,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-04 06:17:09,595 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:09,595 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:09,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 06:17:09,595 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:09,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:09,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1649321512, now seen corresponding path program 1 times [2025-03-04 06:17:09,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:09,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598465070] [2025-03-04 06:17:09,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:09,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:09,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-04 06:17:09,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-04 06:17:09,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:09,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 06:17:09,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:09,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598465070] [2025-03-04 06:17:09,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598465070] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:09,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:17:09,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 06:17:09,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805943374] [2025-03-04 06:17:09,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:09,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 06:17:09,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:09,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 06:17:09,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 06:17:09,827 INFO L87 Difference]: Start difference. First operand 655 states and 937 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:10,090 INFO L93 Difference]: Finished difference Result 1263 states and 1821 transitions. [2025-03-04 06:17:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 06:17:10,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2025-03-04 06:17:10,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:10,094 INFO L225 Difference]: With dead ends: 1263 [2025-03-04 06:17:10,094 INFO L226 Difference]: Without dead ends: 661 [2025-03-04 06:17:10,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 06:17:10,095 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 9 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:10,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2257 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 06:17:10,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2025-03-04 06:17:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2025-03-04 06:17:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 635 states have (on average 1.4188976377952756) internal successors, (901), 651 states have internal predecessors, (901), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-04 06:17:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 943 transitions. [2025-03-04 06:17:10,113 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 943 transitions. Word has length 100 [2025-03-04 06:17:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:10,113 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 943 transitions. [2025-03-04 06:17:10,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:10,114 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 943 transitions. [2025-03-04 06:17:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-04 06:17:10,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:10,115 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:10,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 06:17:10,115 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:10,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:10,116 INFO L85 PathProgramCache]: Analyzing trace with hash -564871155, now seen corresponding path program 1 times [2025-03-04 06:17:10,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:10,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305750060] [2025-03-04 06:17:10,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:10,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:10,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-04 06:17:10,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-04 06:17:10,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:10,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 06:17:10,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:10,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305750060] [2025-03-04 06:17:10,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305750060] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 06:17:10,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477932465] [2025-03-04 06:17:10,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:10,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:10,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 06:17:10,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 06:17:10,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 06:17:10,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-04 06:17:10,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-04 06:17:10,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:10,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:10,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 06:17:10,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 06:17:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 06:17:10,700 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 06:17:10,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477932465] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:10,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 06:17:10,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-04 06:17:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165830091] [2025-03-04 06:17:10,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:10,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 06:17:10,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:10,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 06:17:10,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-04 06:17:10,701 INFO L87 Difference]: Start difference. First operand 661 states and 943 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:10,999 INFO L93 Difference]: Finished difference Result 1279 states and 1838 transitions. [2025-03-04 06:17:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 06:17:10,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2025-03-04 06:17:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:11,002 INFO L225 Difference]: With dead ends: 1279 [2025-03-04 06:17:11,002 INFO L226 Difference]: Without dead ends: 667 [2025-03-04 06:17:11,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-04 06:17:11,003 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 42 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:11,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2705 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 06:17:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2025-03-04 06:17:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 649. [2025-03-04 06:17:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 623 states have (on average 1.4173354735152488) internal successors, (883), 639 states have internal predecessors, (883), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-04 06:17:11,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 925 transitions. [2025-03-04 06:17:11,018 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 925 transitions. Word has length 101 [2025-03-04 06:17:11,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:11,018 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 925 transitions. [2025-03-04 06:17:11,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:11,018 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 925 transitions. [2025-03-04 06:17:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-04 06:17:11,019 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:11,019 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:11,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 06:17:11,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:11,220 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:11,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:11,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1469091366, now seen corresponding path program 1 times [2025-03-04 06:17:11,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:11,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623028617] [2025-03-04 06:17:11,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:11,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:11,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-04 06:17:11,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-04 06:17:11,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:11,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 06:17:11,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:11,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623028617] [2025-03-04 06:17:11,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623028617] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 06:17:11,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156314330] [2025-03-04 06:17:11,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:11,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:11,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 06:17:11,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 06:17:11,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 06:17:11,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-04 06:17:11,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-04 06:17:11,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:11,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:11,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 06:17:11,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 06:17:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 06:17:29,909 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 06:17:29,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156314330] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:29,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 06:17:29,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-04 06:17:29,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58471005] [2025-03-04 06:17:29,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:29,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 06:17:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:29,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 06:17:29,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-04 06:17:29,910 INFO L87 Difference]: Start difference. First operand 649 states and 925 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:36,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-03-04 06:17:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:36,671 INFO L93 Difference]: Finished difference Result 1247 states and 1793 transitions. [2025-03-04 06:17:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 06:17:36,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2025-03-04 06:17:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:36,674 INFO L225 Difference]: With dead ends: 1247 [2025-03-04 06:17:36,674 INFO L226 Difference]: Without dead ends: 659 [2025-03-04 06:17:36,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-04 06:17:36,676 INFO L435 NwaCegarLoop]: 500 mSDtfsCounter, 12 mSDsluCounter, 2190 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:36,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2690 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 571 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2025-03-04 06:17:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2025-03-04 06:17:36,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 649. [2025-03-04 06:17:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 623 states have (on average 1.4173354735152488) internal successors, (883), 639 states have internal predecessors, (883), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-04 06:17:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 925 transitions. [2025-03-04 06:17:36,696 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 925 transitions. Word has length 101 [2025-03-04 06:17:36,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:36,696 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 925 transitions. [2025-03-04 06:17:36,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 925 transitions. [2025-03-04 06:17:36,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-04 06:17:36,697 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:36,697 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:36,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 06:17:36,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:36,898 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:36,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:36,899 INFO L85 PathProgramCache]: Analyzing trace with hash -469853271, now seen corresponding path program 1 times [2025-03-04 06:17:36,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:36,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273233246] [2025-03-04 06:17:36,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:36,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:36,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-04 06:17:36,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-04 06:17:36,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:36,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 06:17:37,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273233246] [2025-03-04 06:17:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273233246] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:37,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:17:37,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-04 06:17:37,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702907869] [2025-03-04 06:17:37,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:37,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 06:17:37,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:37,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 06:17:37,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-04 06:17:37,237 INFO L87 Difference]: Start difference. First operand 649 states and 925 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:37,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:37,708 INFO L93 Difference]: Finished difference Result 1269 states and 1822 transitions. [2025-03-04 06:17:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 06:17:37,709 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2025-03-04 06:17:37,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:37,712 INFO L225 Difference]: With dead ends: 1269 [2025-03-04 06:17:37,712 INFO L226 Difference]: Without dead ends: 681 [2025-03-04 06:17:37,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-04 06:17:37,714 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 26 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:37,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3615 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 06:17:37,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2025-03-04 06:17:37,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 669. [2025-03-04 06:17:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 643 states have (on average 1.4105754276827371) internal successors, (907), 659 states have internal predecessors, (907), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-04 06:17:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 949 transitions. [2025-03-04 06:17:37,730 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 949 transitions. Word has length 103 [2025-03-04 06:17:37,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:37,730 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 949 transitions. [2025-03-04 06:17:37,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 949 transitions. [2025-03-04 06:17:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-04 06:17:37,733 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:37,733 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:17:37,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 06:17:37,734 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:37,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:37,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1726070397, now seen corresponding path program 1 times [2025-03-04 06:17:37,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:37,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883766891] [2025-03-04 06:17:37,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:37,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:37,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-04 06:17:37,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-04 06:17:37,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:37,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 06:17:37,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:37,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883766891] [2025-03-04 06:17:37,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883766891] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 06:17:37,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462611641] [2025-03-04 06:17:37,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:37,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:37,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 06:17:37,940 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 06:17:37,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 06:17:38,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-04 06:17:38,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-04 06:17:38,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:38,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:38,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 06:17:38,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 06:17:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 06:17:38,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 06:17:38,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462611641] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:38,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 06:17:38,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2025-03-04 06:17:38,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105667419] [2025-03-04 06:17:38,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:38,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 06:17:38,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:38,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 06:17:38,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 06:17:38,302 INFO L87 Difference]: Start difference. First operand 669 states and 949 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 06:17:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:38,382 INFO L93 Difference]: Finished difference Result 1233 states and 1764 transitions. [2025-03-04 06:17:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 06:17:38,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2025-03-04 06:17:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:38,385 INFO L225 Difference]: With dead ends: 1233 [2025-03-04 06:17:38,385 INFO L226 Difference]: Without dead ends: 672 [2025-03-04 06:17:38,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 06:17:38,389 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 0 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:38,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 06:17:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2025-03-04 06:17:38,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2025-03-04 06:17:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 645 states have (on average 1.4108527131782946) internal successors, (910), 662 states have internal predecessors, (910), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2025-03-04 06:17:38,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 953 transitions. [2025-03-04 06:17:38,409 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 953 transitions. Word has length 103 [2025-03-04 06:17:38,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:38,410 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 953 transitions. [2025-03-04 06:17:38,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 06:17:38,410 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 953 transitions. [2025-03-04 06:17:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-04 06:17:38,412 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:38,412 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] [2025-03-04 06:17:38,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 06:17:38,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-04 06:17:38,614 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:38,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:38,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1963291193, now seen corresponding path program 1 times [2025-03-04 06:17:38,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:38,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998108539] [2025-03-04 06:17:38,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:38,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:38,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-04 06:17:38,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-04 06:17:38,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:38,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 06:17:38,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:38,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998108539] [2025-03-04 06:17:38,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998108539] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 06:17:38,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284055009] [2025-03-04 06:17:38,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:38,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:38,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 06:17:38,878 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 06:17:38,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 06:17:39,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-04 06:17:39,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-04 06:17:39,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:39,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:39,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 06:17:39,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 06:17:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 06:17:39,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 06:17:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 06:17:39,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284055009] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 06:17:39,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 06:17:39,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-04 06:17:39,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212428787] [2025-03-04 06:17:39,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 06:17:39,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 06:17:39,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:39,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 06:17:39,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-03-04 06:17:39,288 INFO L87 Difference]: Start difference. First operand 672 states and 953 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-04 06:17:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:39,515 INFO L93 Difference]: Finished difference Result 1249 states and 1787 transitions. [2025-03-04 06:17:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 06:17:39,515 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 105 [2025-03-04 06:17:39,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:39,518 INFO L225 Difference]: With dead ends: 1249 [2025-03-04 06:17:39,518 INFO L226 Difference]: Without dead ends: 683 [2025-03-04 06:17:39,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2025-03-04 06:17:39,520 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 11 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:39,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2528 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 06:17:39,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2025-03-04 06:17:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 681. [2025-03-04 06:17:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 653 states have (on average 1.4119448698315467) internal successors, (922), 670 states have internal predecessors, (922), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2025-03-04 06:17:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 965 transitions. [2025-03-04 06:17:39,542 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 965 transitions. Word has length 105 [2025-03-04 06:17:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:39,542 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 965 transitions. [2025-03-04 06:17:39,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-04 06:17:39,543 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 965 transitions. [2025-03-04 06:17:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-04 06:17:39,543 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:39,544 INFO L218 NwaCegarLoop]: trace histogram [6, 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] [2025-03-04 06:17:39,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-04 06:17:39,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:39,745 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:39,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1035994115, now seen corresponding path program 2 times [2025-03-04 06:17:39,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:39,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202422956] [2025-03-04 06:17:39,745 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 06:17:39,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:39,779 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 109 statements into 2 equivalence classes. [2025-03-04 06:17:39,796 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 96 of 109 statements. [2025-03-04 06:17:39,796 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 06:17:39,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-04 06:17:39,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:39,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202422956] [2025-03-04 06:17:39,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202422956] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:39,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:17:39,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 06:17:39,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768550254] [2025-03-04 06:17:39,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:39,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 06:17:39,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:39,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 06:17:39,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 06:17:39,990 INFO L87 Difference]: Start difference. First operand 681 states and 965 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:40,337 INFO L93 Difference]: Finished difference Result 1299 states and 1858 transitions. [2025-03-04 06:17:40,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 06:17:40,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 109 [2025-03-04 06:17:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:40,340 INFO L225 Difference]: With dead ends: 1299 [2025-03-04 06:17:40,340 INFO L226 Difference]: Without dead ends: 687 [2025-03-04 06:17:40,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 06:17:40,341 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 8 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:40,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2674 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 06:17:40,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2025-03-04 06:17:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2025-03-04 06:17:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 659 states have (on average 1.4081942336874052) internal successors, (928), 676 states have internal predecessors, (928), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2025-03-04 06:17:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 971 transitions. [2025-03-04 06:17:40,356 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 971 transitions. Word has length 109 [2025-03-04 06:17:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:40,356 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 971 transitions. [2025-03-04 06:17:40,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 971 transitions. [2025-03-04 06:17:40,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-04 06:17:40,357 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:40,357 INFO L218 NwaCegarLoop]: trace histogram [6, 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] [2025-03-04 06:17:40,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-04 06:17:40,358 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:40,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash -322515937, now seen corresponding path program 1 times [2025-03-04 06:17:40,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:40,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505598159] [2025-03-04 06:17:40,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:40,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:40,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-04 06:17:40,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-04 06:17:40,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:40,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-04 06:17:40,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:40,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505598159] [2025-03-04 06:17:40,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505598159] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 06:17:40,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645996197] [2025-03-04 06:17:40,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:40,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:40,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 06:17:40,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 06:17:40,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 06:17:40,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-04 06:17:41,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-04 06:17:41,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:41,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:41,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 06:17:41,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 06:17:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-04 06:17:41,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 06:17:41,195 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-04 06:17:41,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645996197] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 06:17:41,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 06:17:41,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 13 [2025-03-04 06:17:41,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418892622] [2025-03-04 06:17:41,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 06:17:41,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 06:17:41,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:41,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 06:17:41,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-03-04 06:17:41,197 INFO L87 Difference]: Start difference. First operand 687 states and 971 transitions. Second operand has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 06:17:41,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:41,502 INFO L93 Difference]: Finished difference Result 1273 states and 1813 transitions. [2025-03-04 06:17:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 06:17:41,503 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 109 [2025-03-04 06:17:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:41,506 INFO L225 Difference]: With dead ends: 1273 [2025-03-04 06:17:41,506 INFO L226 Difference]: Without dead ends: 691 [2025-03-04 06:17:41,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2025-03-04 06:17:41,507 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 28 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3953 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:41,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3953 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 06:17:41,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2025-03-04 06:17:41,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2025-03-04 06:17:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 663 states have (on average 1.4042232277526394) internal successors, (931), 680 states have internal predecessors, (931), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2025-03-04 06:17:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 974 transitions. [2025-03-04 06:17:41,522 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 974 transitions. Word has length 109 [2025-03-04 06:17:41,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:41,522 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 974 transitions. [2025-03-04 06:17:41,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 06:17:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 974 transitions. [2025-03-04 06:17:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-04 06:17:41,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:41,523 INFO L218 NwaCegarLoop]: trace histogram [10, 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] [2025-03-04 06:17:41,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-04 06:17:41,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:41,724 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:41,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash 507993887, now seen corresponding path program 2 times [2025-03-04 06:17:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:41,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076003931] [2025-03-04 06:17:41,724 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 06:17:41,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:41,757 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 113 statements into 2 equivalence classes. [2025-03-04 06:17:41,775 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 96 of 113 statements. [2025-03-04 06:17:41,776 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 06:17:41,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:41,978 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-03-04 06:17:41,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:41,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076003931] [2025-03-04 06:17:41,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076003931] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:41,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:17:41,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-04 06:17:41,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514829699] [2025-03-04 06:17:41,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:41,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 06:17:41,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:41,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 06:17:41,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-04 06:17:41,980 INFO L87 Difference]: Start difference. First operand 691 states and 974 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:42,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:42,482 INFO L93 Difference]: Finished difference Result 1332 states and 1892 transitions. [2025-03-04 06:17:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 06:17:42,485 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 113 [2025-03-04 06:17:42,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:42,488 INFO L225 Difference]: With dead ends: 1332 [2025-03-04 06:17:42,488 INFO L226 Difference]: Without dead ends: 725 [2025-03-04 06:17:42,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-04 06:17:42,490 INFO L435 NwaCegarLoop]: 488 mSDtfsCounter, 17 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4036 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:42,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4036 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 06:17:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2025-03-04 06:17:42,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 701. [2025-03-04 06:17:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 673 states have (on average 1.401188707280832) internal successors, (943), 690 states have internal predecessors, (943), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2025-03-04 06:17:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 986 transitions. [2025-03-04 06:17:42,512 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 986 transitions. Word has length 113 [2025-03-04 06:17:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:42,513 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 986 transitions. [2025-03-04 06:17:42,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 986 transitions. [2025-03-04 06:17:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-04 06:17:42,515 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:42,516 INFO L218 NwaCegarLoop]: trace histogram [10, 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] [2025-03-04 06:17:42,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-04 06:17:42,516 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:42,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:42,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1787605907, now seen corresponding path program 1 times [2025-03-04 06:17:42,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:42,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208824969] [2025-03-04 06:17:42,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:42,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:42,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-04 06:17:42,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-04 06:17:42,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:42,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-04 06:17:42,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:42,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208824969] [2025-03-04 06:17:42,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208824969] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 06:17:42,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908313706] [2025-03-04 06:17:42,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:42,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:42,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 06:17:42,953 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 06:17:42,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 06:17:43,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-04 06:17:43,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-04 06:17:43,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:43,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:43,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-04 06:17:43,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 06:17:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 18 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-04 06:17:43,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 06:17:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 8 refuted. 2 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 06:17:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908313706] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 06:17:51,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 06:17:51,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 23 [2025-03-04 06:17:51,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427393852] [2025-03-04 06:17:51,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 06:17:51,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 06:17:51,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:51,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 06:17:51,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=370, Unknown=2, NotChecked=0, Total=506 [2025-03-04 06:17:51,675 INFO L87 Difference]: Start difference. First operand 701 states and 986 transitions. Second operand has 23 states, 23 states have (on average 5.391304347826087) internal successors, (124), 23 states have internal predecessors, (124), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-04 06:17:52,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:52,346 INFO L93 Difference]: Finished difference Result 1305 states and 1854 transitions. [2025-03-04 06:17:52,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-04 06:17:52,348 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.391304347826087) internal successors, (124), 23 states have internal predecessors, (124), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 114 [2025-03-04 06:17:52,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:52,350 INFO L225 Difference]: With dead ends: 1305 [2025-03-04 06:17:52,350 INFO L226 Difference]: Without dead ends: 714 [2025-03-04 06:17:52,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=328, Invalid=792, Unknown=2, NotChecked=0, Total=1122 [2025-03-04 06:17:52,354 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 32 mSDsluCounter, 3966 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 4465 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:52,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 4465 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 06:17:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2025-03-04 06:17:52,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 710. [2025-03-04 06:17:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 682 states have (on average 1.404692082111437) internal successors, (958), 699 states have internal predecessors, (958), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2025-03-04 06:17:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1001 transitions. [2025-03-04 06:17:52,372 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1001 transitions. Word has length 114 [2025-03-04 06:17:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:52,373 INFO L471 AbstractCegarLoop]: Abstraction has 710 states and 1001 transitions. [2025-03-04 06:17:52,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.391304347826087) internal successors, (124), 23 states have internal predecessors, (124), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-04 06:17:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1001 transitions. [2025-03-04 06:17:52,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-04 06:17:52,374 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:52,374 INFO L218 NwaCegarLoop]: trace histogram [19, 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] [2025-03-04 06:17:52,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 06:17:52,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-04 06:17:52,575 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:52,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash -980408585, now seen corresponding path program 2 times [2025-03-04 06:17:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:52,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278734612] [2025-03-04 06:17:52,575 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 06:17:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:52,612 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 123 statements into 2 equivalence classes. [2025-03-04 06:17:52,633 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 97 of 123 statements. [2025-03-04 06:17:52,633 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 06:17:52,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2025-03-04 06:17:52,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:52,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278734612] [2025-03-04 06:17:52,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278734612] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:17:52,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:17:52,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-04 06:17:52,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253378866] [2025-03-04 06:17:52,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:17:52,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 06:17:52,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:17:52,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 06:17:52,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-04 06:17:52,926 INFO L87 Difference]: Start difference. First operand 710 states and 1001 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:53,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 06:17:53,657 INFO L93 Difference]: Finished difference Result 1355 states and 1928 transitions. [2025-03-04 06:17:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 06:17:53,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 123 [2025-03-04 06:17:53,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 06:17:53,660 INFO L225 Difference]: With dead ends: 1355 [2025-03-04 06:17:53,660 INFO L226 Difference]: Without dead ends: 734 [2025-03-04 06:17:53,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-04 06:17:53,667 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 13 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-04 06:17:53,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3608 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-04 06:17:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2025-03-04 06:17:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 718. [2025-03-04 06:17:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 690 states have (on average 1.4028985507246376) internal successors, (968), 707 states have internal predecessors, (968), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2025-03-04 06:17:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1011 transitions. [2025-03-04 06:17:53,691 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1011 transitions. Word has length 123 [2025-03-04 06:17:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 06:17:53,691 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1011 transitions. [2025-03-04 06:17:53,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 06:17:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1011 transitions. [2025-03-04 06:17:53,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-04 06:17:53,694 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 06:17:53,695 INFO L218 NwaCegarLoop]: trace histogram [19, 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] [2025-03-04 06:17:53,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-04 06:17:53,695 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 06:17:53,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:17:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash -219715970, now seen corresponding path program 1 times [2025-03-04 06:17:53,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:17:53,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261374025] [2025-03-04 06:17:53,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:53,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:17:53,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-04 06:17:53,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-04 06:17:53,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:53,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2025-03-04 06:17:54,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:17:54,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261374025] [2025-03-04 06:17:54,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261374025] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 06:17:54,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940588187] [2025-03-04 06:17:54,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:17:54,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 06:17:54,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 06:17:54,253 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 06:17:54,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 06:17:54,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-04 06:17:55,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-04 06:17:55,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:17:55,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:17:55,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-04 06:17:55,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 06:17:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 107 proven. 28 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-03-04 06:17:55,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 06:18:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 125 refuted. 9 times theorem prover too weak. 79 trivial. 0 not checked. [2025-03-04 06:18:32,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940588187] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 06:18:32,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 06:18:32,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2025-03-04 06:18:32,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491455387] [2025-03-04 06:18:32,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 06:18:32,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-04 06:18:32,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:18:32,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-04 06:18:32,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=471, Unknown=9, NotChecked=0, Total=702 [2025-03-04 06:18:32,156 INFO L87 Difference]: Start difference. First operand 718 states and 1011 transitions. Second operand has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4)