./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 08:34:15,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 08:34:15,478 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 08:34:15,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 08:34:15,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 08:34:15,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 08:34:15,513 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 08:34:15,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 08:34:15,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 08:34:15,513 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 08:34:15,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 08:34:15,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 08:34:15,514 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 08:34:15,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 08:34:15,515 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 08:34:15,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 08:34:15,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 08:34:15,515 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 08:34:15,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 08:34:15,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 08:34:15,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 08:34:15,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 08:34:15,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 08:34:15,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 08:34:15,516 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 08:34:15,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 08:34:15,516 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 08:34:15,516 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 08:34:15,516 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 08:34:15,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 08:34:15,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 08:34:15,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 08:34:15,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:34:15,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 08:34:15,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 08:34:15,517 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 08:34:15,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 08:34:15,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 08:34:15,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 08:34:15,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 08:34:15,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 08:34:15,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 08:34:15,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 08:34:15,518 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a [2025-02-06 08:34:15,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 08:34:15,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 08:34:15,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 08:34:15,767 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 08:34:15,767 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 08:34:15,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2025-02-06 08:34:16,880 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/00e8c6db1/b3c98048b9e44dfdb7789ac120b1bf9e/FLAG50cd8d5ae [2025-02-06 08:34:17,234 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 08:34:17,236 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2025-02-06 08:34:17,252 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/00e8c6db1/b3c98048b9e44dfdb7789ac120b1bf9e/FLAG50cd8d5ae [2025-02-06 08:34:17,465 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/00e8c6db1/b3c98048b9e44dfdb7789ac120b1bf9e [2025-02-06 08:34:17,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 08:34:17,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 08:34:17,469 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 08:34:17,469 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 08:34:17,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 08:34:17,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:17,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589e70c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17, skipping insertion in model container [2025-02-06 08:34:17,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:17,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 08:34:17,729 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2025-02-06 08:34:17,824 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2025-02-06 08:34:17,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:34:17,837 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 08:34:17,861 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[33021,33034] [2025-02-06 08:34:17,905 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i[45234,45247] [2025-02-06 08:34:17,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:34:17,935 INFO L204 MainTranslator]: Completed translation [2025-02-06 08:34:17,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17 WrapperNode [2025-02-06 08:34:17,936 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 08:34:17,937 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 08:34:17,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 08:34:17,937 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 08:34:17,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:17,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:18,014 INFO L138 Inliner]: procedures = 177, calls = 289, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1381 [2025-02-06 08:34:18,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 08:34:18,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 08:34:18,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 08:34:18,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 08:34:18,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:18,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:18,030 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:18,093 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 34, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-02-06 08:34:18,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:18,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:18,132 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:18,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:18,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:18,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:18,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 08:34:18,152 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 08:34:18,152 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 08:34:18,152 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 08:34:18,153 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (1/1) ... [2025-02-06 08:34:18,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:34:18,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:34:18,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 08:34:18,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 08:34:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 08:34:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 08:34:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 08:34:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 08:34:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 08:34:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 08:34:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 08:34:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 08:34:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 08:34:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 08:34:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 08:34:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 08:34:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 08:34:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 08:34:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2025-02-06 08:34:18,199 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 08:34:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 08:34:18,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 08:34:18,367 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 08:34:18,369 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 08:34:19,491 INFO L1309 $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; [2025-02-06 08:34:19,574 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2025-02-06 08:34:19,575 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 08:34:19,616 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 08:34:19,616 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-06 08:34:19,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:34:19 BoogieIcfgContainer [2025-02-06 08:34:19,617 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 08:34:19,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 08:34:19,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 08:34:19,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 08:34:19,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 08:34:17" (1/3) ... [2025-02-06 08:34:19,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca7bdd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:34:19, skipping insertion in model container [2025-02-06 08:34:19,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:17" (2/3) ... [2025-02-06 08:34:19,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca7bdd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:34:19, skipping insertion in model container [2025-02-06 08:34:19,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:34:19" (3/3) ... [2025-02-06 08:34:19,624 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-1.i [2025-02-06 08:34:19,635 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 08:34:19,637 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test8-1.i that has 6 procedures, 440 locations, 1 initial locations, 37 loop locations, and 2 error locations. [2025-02-06 08:34:19,705 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:34:19,717 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;@127e10a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:34:19,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-06 08:34:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 432 states, 406 states have (on average 1.6231527093596059) internal successors, (659), 423 states have internal predecessors, (659), 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) [2025-02-06 08:34:19,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 08:34:19,726 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:19,726 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:34:19,726 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:19,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:19,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1638663365, now seen corresponding path program 1 times [2025-02-06 08:34:19,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:19,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652343445] [2025-02-06 08:34:19,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:19,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:19,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 08:34:19,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 08:34:19,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:19,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:34:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:19,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652343445] [2025-02-06 08:34:19,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652343445] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:19,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:19,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 08:34:19,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962743507] [2025-02-06 08:34:19,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:19,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 08:34:19,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:19,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 08:34:19,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 08:34:19,849 INFO L87 Difference]: Start difference. First operand has 432 states, 406 states have (on average 1.6231527093596059) internal successors, (659), 423 states have internal predecessors, (659), 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) [2025-02-06 08:34:19,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:19,969 INFO L93 Difference]: Finished difference Result 862 states and 1413 transitions. [2025-02-06 08:34:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 08:34:19,971 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 [2025-02-06 08:34:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:19,981 INFO L225 Difference]: With dead ends: 862 [2025-02-06 08:34:19,982 INFO L226 Difference]: Without dead ends: 428 [2025-02-06 08:34:19,986 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 [2025-02-06 08:34:19,989 INFO L435 NwaCegarLoop]: 593 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:19,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 593 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:34:20,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2025-02-06 08:34:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2025-02-06 08:34:20,044 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) [2025-02-06 08:34:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 631 transitions. [2025-02-06 08:34:20,053 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 631 transitions. Word has length 9 [2025-02-06 08:34:20,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:20,054 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 631 transitions. [2025-02-06 08:34:20,054 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) [2025-02-06 08:34:20,054 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 631 transitions. [2025-02-06 08:34:20,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-06 08:34:20,056 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:20,057 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] [2025-02-06 08:34:20,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 08:34:20,057 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:20,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1415174223, now seen corresponding path program 1 times [2025-02-06 08:34:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:20,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123044278] [2025-02-06 08:34:20,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:20,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:20,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 08:34:20,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 08:34:20,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:20,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:34:20,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:20,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123044278] [2025-02-06 08:34:20,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123044278] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:20,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:20,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:34:20,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540518034] [2025-02-06 08:34:20,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:20,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:34:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:20,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:34:20,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:34:20,476 INFO L87 Difference]: Start difference. First operand 428 states and 631 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:34:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:20,767 INFO L93 Difference]: Finished difference Result 1036 states and 1528 transitions. [2025-02-06 08:34:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:34:20,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-02-06 08:34:20,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:20,773 INFO L225 Difference]: With dead ends: 1036 [2025-02-06 08:34:20,773 INFO L226 Difference]: Without dead ends: 809 [2025-02-06 08:34:20,774 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 [2025-02-06 08:34:20,775 INFO L435 NwaCegarLoop]: 570 mSDtfsCounter, 543 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1702 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 [2025-02-06 08:34:20,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1702 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:34:20,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2025-02-06 08:34:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 430. [2025-02-06 08:34:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 405 states have (on average 1.4641975308641975) internal successors, (593), 421 states have internal predecessors, (593), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-06 08:34:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 633 transitions. [2025-02-06 08:34:20,798 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 633 transitions. Word has length 63 [2025-02-06 08:34:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:20,798 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 633 transitions. [2025-02-06 08:34:20,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:34:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 633 transitions. [2025-02-06 08:34:20,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-02-06 08:34:20,800 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:20,800 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, 1] [2025-02-06 08:34:20,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 08:34:20,801 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:20,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash 44923525, now seen corresponding path program 1 times [2025-02-06 08:34:20,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:20,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581315287] [2025-02-06 08:34:20,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:20,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:20,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-02-06 08:34:20,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-02-06 08:34:20,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:20,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:34:21,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:21,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581315287] [2025-02-06 08:34:21,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581315287] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:21,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:21,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:34:21,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943305419] [2025-02-06 08:34:21,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:21,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:34:21,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:21,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:34:21,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:34:21,098 INFO L87 Difference]: Start difference. First operand 430 states and 633 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:34:21,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:21,245 INFO L93 Difference]: Finished difference Result 814 states and 1196 transitions. [2025-02-06 08:34:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:34:21,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-02-06 08:34:21,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:21,248 INFO L225 Difference]: With dead ends: 814 [2025-02-06 08:34:21,248 INFO L226 Difference]: Without dead ends: 388 [2025-02-06 08:34:21,249 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 [2025-02-06 08:34:21,252 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 30 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1472 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 [2025-02-06 08:34:21,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1472 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:34:21,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2025-02-06 08:34:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2025-02-06 08:34:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 363 states have (on average 1.421487603305785) internal successors, (516), 379 states have internal predecessors, (516), 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) [2025-02-06 08:34:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 556 transitions. [2025-02-06 08:34:21,276 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 556 transitions. Word has length 84 [2025-02-06 08:34:21,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:21,276 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 556 transitions. [2025-02-06 08:34:21,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:34:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 556 transitions. [2025-02-06 08:34:21,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-02-06 08:34:21,280 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:21,280 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, 1] [2025-02-06 08:34:21,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 08:34:21,281 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:21,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1427670207, now seen corresponding path program 1 times [2025-02-06 08:34:21,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:21,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853285172] [2025-02-06 08:34:21,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:21,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:21,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-02-06 08:34:21,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-02-06 08:34:21,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:21,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:34:21,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:21,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853285172] [2025-02-06 08:34:21,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853285172] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:21,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:21,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:34:21,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011264304] [2025-02-06 08:34:21,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:21,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:34:21,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:21,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:34:21,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:34:21,460 INFO L87 Difference]: Start difference. First operand 388 states and 556 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:34:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:21,623 INFO L93 Difference]: Finished difference Result 1022 states and 1468 transitions. [2025-02-06 08:34:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:34:21,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-02-06 08:34:21,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:21,627 INFO L225 Difference]: With dead ends: 1022 [2025-02-06 08:34:21,628 INFO L226 Difference]: Without dead ends: 638 [2025-02-06 08:34:21,629 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 [2025-02-06 08:34:21,630 INFO L435 NwaCegarLoop]: 681 mSDtfsCounter, 294 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1173 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 [2025-02-06 08:34:21,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1173 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:34:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2025-02-06 08:34:21,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 635. [2025-02-06 08:34:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 609 states have (on average 1.4285714285714286) internal successors, (870), 625 states have internal predecessors, (870), 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) [2025-02-06 08:34:21,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 912 transitions. [2025-02-06 08:34:21,655 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 912 transitions. Word has length 84 [2025-02-06 08:34:21,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:21,655 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 912 transitions. [2025-02-06 08:34:21,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:34:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 912 transitions. [2025-02-06 08:34:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-02-06 08:34:21,657 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:21,657 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] [2025-02-06 08:34:21,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 08:34:21,657 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:21,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1726130888, now seen corresponding path program 1 times [2025-02-06 08:34:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:21,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998896713] [2025-02-06 08:34:21,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:21,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:21,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-02-06 08:34:21,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-02-06 08:34:21,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:21,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:34:22,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:22,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998896713] [2025-02-06 08:34:22,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998896713] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:34:22,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365131959] [2025-02-06 08:34:22,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:22,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:22,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:34:22,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:34:22,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 08:34:22,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-02-06 08:34:22,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-02-06 08:34:22,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:22,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:22,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-06 08:34:22,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:34:22,359 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 [2025-02-06 08:34:22,386 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 [2025-02-06 08:34:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:23,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:34:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365131959] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:23,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:34:23,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2025-02-06 08:34:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916177149] [2025-02-06 08:34:23,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:23,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 08:34:23,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:23,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 08:34:23,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-02-06 08:34:23,040 INFO L87 Difference]: Start difference. First operand 635 states and 912 transitions. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:34:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:24,993 INFO L93 Difference]: Finished difference Result 1523 states and 2189 transitions. [2025-02-06 08:34:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 08:34:24,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2025-02-06 08:34:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:24,998 INFO L225 Difference]: With dead ends: 1523 [2025-02-06 08:34:24,998 INFO L226 Difference]: Without dead ends: 931 [2025-02-06 08:34:24,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2025-02-06 08:34:25,000 INFO L435 NwaCegarLoop]: 498 mSDtfsCounter, 586 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:25,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 3080 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 08:34:25,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2025-02-06 08:34:25,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 635. [2025-02-06 08:34:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 609 states have (on average 1.4269293924466337) internal successors, (869), 625 states have internal predecessors, (869), 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) [2025-02-06 08:34:25,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 911 transitions. [2025-02-06 08:34:25,025 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 911 transitions. Word has length 99 [2025-02-06 08:34:25,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:25,025 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 911 transitions. [2025-02-06 08:34:25,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:34:25,026 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 911 transitions. [2025-02-06 08:34:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-06 08:34:25,026 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:25,026 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] [2025-02-06 08:34:25,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 08:34:25,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:25,228 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:25,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:25,228 INFO L85 PathProgramCache]: Analyzing trace with hash -463371583, now seen corresponding path program 1 times [2025-02-06 08:34:25,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:25,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131806508] [2025-02-06 08:34:25,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:25,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:25,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-02-06 08:34:25,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-02-06 08:34:25,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:25,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:34:25,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:25,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131806508] [2025-02-06 08:34:25,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131806508] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:34:25,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189540084] [2025-02-06 08:34:25,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:25,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:25,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:34:25,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:34:25,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 08:34:25,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-02-06 08:34:25,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-02-06 08:34:25,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:25,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:25,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-06 08:34:25,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:34:25,725 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 [2025-02-06 08:34:25,738 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 [2025-02-06 08:34:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:26,296 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:34:26,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189540084] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:26,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:34:26,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2025-02-06 08:34:26,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484117037] [2025-02-06 08:34:26,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:26,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 08:34:26,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:26,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 08:34:26,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-02-06 08:34:26,298 INFO L87 Difference]: Start difference. First operand 635 states and 911 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 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) [2025-02-06 08:34:27,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:27,625 INFO L93 Difference]: Finished difference Result 1538 states and 2209 transitions. [2025-02-06 08:34:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 08:34:27,626 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2025-02-06 08:34:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:27,630 INFO L225 Difference]: With dead ends: 1538 [2025-02-06 08:34:27,630 INFO L226 Difference]: Without dead ends: 951 [2025-02-06 08:34:27,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2025-02-06 08:34:27,631 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 647 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:27,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 3156 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-06 08:34:27,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2025-02-06 08:34:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 651. [2025-02-06 08:34:27,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 625 states have (on average 1.4224) internal successors, (889), 641 states have internal predecessors, (889), 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) [2025-02-06 08:34:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 931 transitions. [2025-02-06 08:34:27,652 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 931 transitions. Word has length 100 [2025-02-06 08:34:27,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:27,652 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 931 transitions. [2025-02-06 08:34:27,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 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) [2025-02-06 08:34:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 931 transitions. [2025-02-06 08:34:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-06 08:34:27,653 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:27,654 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] [2025-02-06 08:34:27,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 08:34:27,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:27,855 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:27,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:27,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1536892849, now seen corresponding path program 1 times [2025-02-06 08:34:27,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:27,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459848964] [2025-02-06 08:34:27,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:27,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:27,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-06 08:34:27,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-06 08:34:27,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:27,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:28,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:28,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459848964] [2025-02-06 08:34:28,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459848964] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:28,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:28,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 08:34:28,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154901191] [2025-02-06 08:34:28,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:28,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:34:28,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:28,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:34:28,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:34:28,081 INFO L87 Difference]: Start difference. First operand 651 states and 931 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), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:34:28,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:28,417 INFO L93 Difference]: Finished difference Result 1255 states and 1808 transitions. [2025-02-06 08:34:28,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 08:34:28,418 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), 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 101 [2025-02-06 08:34:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:28,420 INFO L225 Difference]: With dead ends: 1255 [2025-02-06 08:34:28,420 INFO L226 Difference]: Without dead ends: 661 [2025-02-06 08:34:28,421 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 [2025-02-06 08:34:28,422 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 14 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2696 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 [2025-02-06 08:34:28,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2696 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 08:34:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2025-02-06 08:34:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 659. [2025-02-06 08:34:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 633 states have (on average 1.4202211690363349) internal successors, (899), 649 states have internal predecessors, (899), 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) [2025-02-06 08:34:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 941 transitions. [2025-02-06 08:34:28,437 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 941 transitions. Word has length 101 [2025-02-06 08:34:28,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:28,438 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 941 transitions. [2025-02-06 08:34:28,438 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), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:34:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 941 transitions. [2025-02-06 08:34:28,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-06 08:34:28,438 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:28,439 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] [2025-02-06 08:34:28,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 08:34:28,439 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:28,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:28,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1269852427, now seen corresponding path program 1 times [2025-02-06 08:34:28,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:28,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733917607] [2025-02-06 08:34:28,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:28,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:28,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-06 08:34:28,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-06 08:34:28,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:28,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:28,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:28,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733917607] [2025-02-06 08:34:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733917607] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:28,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:28,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 08:34:28,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195245501] [2025-02-06 08:34:28,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:28,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:34:28,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:28,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:34:28,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:34:28,663 INFO L87 Difference]: Start difference. First operand 659 states and 941 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2025-02-06 08:34:28,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:28,882 INFO L93 Difference]: Finished difference Result 1270 states and 1828 transitions. [2025-02-06 08:34:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:34:28,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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 101 [2025-02-06 08:34:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:28,885 INFO L225 Difference]: With dead ends: 1270 [2025-02-06 08:34:28,885 INFO L226 Difference]: Without dead ends: 665 [2025-02-06 08:34:28,886 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 [2025-02-06 08:34:28,886 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 9 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:28,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1848 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:34:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2025-02-06 08:34:28,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2025-02-06 08:34:28,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 639 states have (on average 1.4162754303599374) internal successors, (905), 655 states have internal predecessors, (905), 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) [2025-02-06 08:34:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 947 transitions. [2025-02-06 08:34:28,901 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 947 transitions. Word has length 101 [2025-02-06 08:34:28,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:28,901 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 947 transitions. [2025-02-06 08:34:28,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2025-02-06 08:34:28,901 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 947 transitions. [2025-02-06 08:34:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-02-06 08:34:28,902 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:28,902 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] [2025-02-06 08:34:28,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 08:34:28,902 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:28,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:28,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1329970266, now seen corresponding path program 1 times [2025-02-06 08:34:28,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:28,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023029915] [2025-02-06 08:34:28,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:28,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-02-06 08:34:29,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-02-06 08:34:29,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:29,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:34:29,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:29,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023029915] [2025-02-06 08:34:29,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023029915] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:34:29,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493639254] [2025-02-06 08:34:29,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:29,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:29,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:34:29,184 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:34:29,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 08:34:29,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-02-06 08:34:29,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-02-06 08:34:29,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:29,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:29,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 08:34:29,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:34:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:29,499 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:34:29,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493639254] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:29,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:34:29,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-06 08:34:29,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810432890] [2025-02-06 08:34:29,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:29,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:34:29,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:29,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:34:29,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:34:29,500 INFO L87 Difference]: Start difference. First operand 665 states and 947 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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) [2025-02-06 08:34:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:29,802 INFO L93 Difference]: Finished difference Result 1286 states and 1845 transitions. [2025-02-06 08:34:29,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 08:34:29,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2025-02-06 08:34:29,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:29,805 INFO L225 Difference]: With dead ends: 1286 [2025-02-06 08:34:29,805 INFO L226 Difference]: Without dead ends: 671 [2025-02-06 08:34:29,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-06 08:34:29,807 INFO L435 NwaCegarLoop]: 498 mSDtfsCounter, 42 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2717 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 [2025-02-06 08:34:29,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2717 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 08:34:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2025-02-06 08:34:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 653. [2025-02-06 08:34:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 627 states have (on average 1.4146730462519936) internal successors, (887), 643 states have internal predecessors, (887), 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) [2025-02-06 08:34:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 929 transitions. [2025-02-06 08:34:29,821 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 929 transitions. Word has length 102 [2025-02-06 08:34:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:29,821 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 929 transitions. [2025-02-06 08:34:29,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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) [2025-02-06 08:34:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 929 transitions. [2025-02-06 08:34:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-02-06 08:34:29,824 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:29,824 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] [2025-02-06 08:34:29,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 08:34:30,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:30,025 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:30,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:30,025 INFO L85 PathProgramCache]: Analyzing trace with hash 850465426, now seen corresponding path program 1 times [2025-02-06 08:34:30,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:30,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146362556] [2025-02-06 08:34:30,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:30,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:30,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-02-06 08:34:30,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-02-06 08:34:30,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:30,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:34:30,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:30,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146362556] [2025-02-06 08:34:30,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146362556] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:34:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090114571] [2025-02-06 08:34:30,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:30,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:30,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:34:30,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:34:30,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 08:34:30,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-02-06 08:34:30,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-02-06 08:34:30,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:30,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:30,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 08:34:30,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:34:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:44,475 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:34:44,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090114571] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:44,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:34:44,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-06 08:34:44,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540130073] [2025-02-06 08:34:44,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:44,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:34:44,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:44,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:34:44,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:34:44,476 INFO L87 Difference]: Start difference. First operand 653 states and 929 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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) [2025-02-06 08:34:48,731 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] [2025-02-06 08:34:50,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-02-06 08:34:54,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-02-06 08:34:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:54,986 INFO L93 Difference]: Finished difference Result 1254 states and 1800 transitions. [2025-02-06 08:34:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 08:34:54,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2025-02-06 08:34:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:54,989 INFO L225 Difference]: With dead ends: 1254 [2025-02-06 08:34:54,989 INFO L226 Difference]: Without dead ends: 663 [2025-02-06 08:34:54,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:34:54,991 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 12 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:54,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2702 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 570 Invalid, 2 Unknown, 0 Unchecked, 10.5s Time] [2025-02-06 08:34:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2025-02-06 08:34:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 653. [2025-02-06 08:34:55,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 627 states have (on average 1.4146730462519936) internal successors, (887), 643 states have internal predecessors, (887), 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) [2025-02-06 08:34:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 929 transitions. [2025-02-06 08:34:55,005 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 929 transitions. Word has length 102 [2025-02-06 08:34:55,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:55,005 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 929 transitions. [2025-02-06 08:34:55,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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) [2025-02-06 08:34:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 929 transitions. [2025-02-06 08:34:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-06 08:34:55,006 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:55,006 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, 1] [2025-02-06 08:34:55,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 08:34:55,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 08:34:55,207 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:55,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1435791862, now seen corresponding path program 1 times [2025-02-06 08:34:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:55,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193239397] [2025-02-06 08:34:55,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:55,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:55,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-06 08:34:55,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-06 08:34:55,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:55,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:55,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:55,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193239397] [2025-02-06 08:34:55,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193239397] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:55,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:55,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 08:34:55,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153285998] [2025-02-06 08:34:55,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:55,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 08:34:55,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:55,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 08:34:55,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-06 08:34:55,544 INFO L87 Difference]: Start difference. First operand 653 states and 929 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) [2025-02-06 08:34:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:55,992 INFO L93 Difference]: Finished difference Result 1276 states and 1829 transitions. [2025-02-06 08:34:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 08:34:55,992 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 104 [2025-02-06 08:34:55,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:55,995 INFO L225 Difference]: With dead ends: 1276 [2025-02-06 08:34:55,995 INFO L226 Difference]: Without dead ends: 685 [2025-02-06 08:34:55,996 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 [2025-02-06 08:34:55,997 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 26 mSDsluCounter, 3128 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3631 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 [2025-02-06 08:34:55,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3631 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 08:34:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2025-02-06 08:34:56,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 673. [2025-02-06 08:34:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 647 states have (on average 1.4080370942812983) internal successors, (911), 663 states have internal predecessors, (911), 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) [2025-02-06 08:34:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 953 transitions. [2025-02-06 08:34:56,014 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 953 transitions. Word has length 104 [2025-02-06 08:34:56,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:56,014 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 953 transitions. [2025-02-06 08:34:56,014 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) [2025-02-06 08:34:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 953 transitions. [2025-02-06 08:34:56,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-06 08:34:56,016 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:56,016 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, 1] [2025-02-06 08:34:56,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 08:34:56,016 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:56,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1267195573, now seen corresponding path program 1 times [2025-02-06 08:34:56,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:56,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102493459] [2025-02-06 08:34:56,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:56,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-06 08:34:56,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-06 08:34:56,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:56,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:34:56,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:56,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102493459] [2025-02-06 08:34:56,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102493459] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:34:56,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217170409] [2025-02-06 08:34:56,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:56,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:56,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:34:56,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:34:56,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 08:34:56,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-06 08:34:56,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-06 08:34:56,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:56,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:56,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-06 08:34:56,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:34:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:57,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:34:57,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217170409] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:57,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:34:57,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2025-02-06 08:34:57,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775287104] [2025-02-06 08:34:57,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:57,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 08:34:57,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:57,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 08:34:57,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-02-06 08:34:57,183 INFO L87 Difference]: Start difference. First operand 673 states and 953 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2025-02-06 08:34:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:58,359 INFO L93 Difference]: Finished difference Result 1284 states and 1831 transitions. [2025-02-06 08:34:58,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 08:34:58,364 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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 104 [2025-02-06 08:34:58,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:58,367 INFO L225 Difference]: With dead ends: 1284 [2025-02-06 08:34:58,367 INFO L226 Difference]: Without dead ends: 683 [2025-02-06 08:34:58,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-02-06 08:34:58,372 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 11 mSDsluCounter, 3942 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4443 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:58,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4443 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 08:34:58,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2025-02-06 08:34:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 679. [2025-02-06 08:34:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 653 states have (on average 1.4042879019908117) internal successors, (917), 669 states have internal predecessors, (917), 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) [2025-02-06 08:34:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 959 transitions. [2025-02-06 08:34:58,404 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 959 transitions. Word has length 104 [2025-02-06 08:34:58,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:58,404 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 959 transitions. [2025-02-06 08:34:58,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2025-02-06 08:34:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 959 transitions. [2025-02-06 08:34:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-06 08:34:58,408 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:58,408 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, 1] [2025-02-06 08:34:58,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 08:34:58,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 08:34:58,610 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:58,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:58,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1490938833, now seen corresponding path program 1 times [2025-02-06 08:34:58,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:58,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764922635] [2025-02-06 08:34:58,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:58,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:58,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-06 08:34:58,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-06 08:34:58,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:58,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:34:58,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:58,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764922635] [2025-02-06 08:34:58,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764922635] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:34:58,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24273427] [2025-02-06 08:34:58,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:58,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:58,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:34:58,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:34:58,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 08:34:59,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-06 08:34:59,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-06 08:34:59,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:59,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:59,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 08:34:59,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:34:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:59,244 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:34:59,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24273427] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:59,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:34:59,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-06 08:34:59,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489071215] [2025-02-06 08:34:59,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:59,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:34:59,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:59,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:34:59,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:34:59,245 INFO L87 Difference]: Start difference. First operand 679 states and 959 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), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:34:59,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:59,755 INFO L93 Difference]: Finished difference Result 1293 states and 1845 transitions. [2025-02-06 08:34:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 08:34:59,756 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), 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 104 [2025-02-06 08:34:59,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:59,759 INFO L225 Difference]: With dead ends: 1293 [2025-02-06 08:34:59,759 INFO L226 Difference]: Without dead ends: 689 [2025-02-06 08:34:59,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:34:59,761 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 10 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:59,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2702 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 08:34:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2025-02-06 08:34:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 679. [2025-02-06 08:34:59,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 653 states have (on average 1.4042879019908117) internal successors, (917), 669 states have internal predecessors, (917), 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) [2025-02-06 08:34:59,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 959 transitions. [2025-02-06 08:34:59,779 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 959 transitions. Word has length 104 [2025-02-06 08:34:59,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:59,780 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 959 transitions. [2025-02-06 08:34:59,780 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), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:34:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 959 transitions. [2025-02-06 08:34:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-06 08:34:59,781 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:59,781 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, 1, 1] [2025-02-06 08:34:59,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 08:34:59,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-06 08:34:59,982 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:59,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:59,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2135302961, now seen corresponding path program 1 times [2025-02-06 08:34:59,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:59,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883678037] [2025-02-06 08:34:59,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:59,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:00,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-06 08:35:00,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-06 08:35:00,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:00,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:35:00,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:00,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883678037] [2025-02-06 08:35:00,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883678037] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:35:00,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106343852] [2025-02-06 08:35:00,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:00,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:00,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:35:00,218 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:35:00,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 08:35:00,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-06 08:35:00,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-06 08:35:00,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:00,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:00,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 08:35:00,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:35:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:35:00,586 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:35:00,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106343852] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:35:00,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:35:00,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2025-02-06 08:35:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385400711] [2025-02-06 08:35:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:35:00,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:35:00,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:00,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:35:00,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 08:35:00,588 INFO L87 Difference]: Start difference. First operand 679 states and 959 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2025-02-06 08:35:00,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:00,663 INFO L93 Difference]: Finished difference Result 1249 states and 1780 transitions. [2025-02-06 08:35:00,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:35:00,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 105 [2025-02-06 08:35:00,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:00,666 INFO L225 Difference]: With dead ends: 1249 [2025-02-06 08:35:00,666 INFO L226 Difference]: Without dead ends: 682 [2025-02-06 08:35:00,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 08:35:00,671 INFO L435 NwaCegarLoop]: 511 mSDtfsCounter, 0 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1529 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 [2025-02-06 08:35:00,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1529 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:35:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2025-02-06 08:35:00,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2025-02-06 08:35:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 655 states have (on average 1.4045801526717556) internal successors, (920), 672 states have internal predecessors, (920), 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) [2025-02-06 08:35:00,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 963 transitions. [2025-02-06 08:35:00,685 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 963 transitions. Word has length 105 [2025-02-06 08:35:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:00,686 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 963 transitions. [2025-02-06 08:35:00,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2025-02-06 08:35:00,686 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 963 transitions. [2025-02-06 08:35:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-06 08:35:00,687 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:00,687 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:35:00,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 08:35:00,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:00,888 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:00,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash -230943981, now seen corresponding path program 1 times [2025-02-06 08:35:00,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:00,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628867312] [2025-02-06 08:35:00,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:00,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-06 08:35:01,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-06 08:35:01,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:01,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 08:35:01,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628867312] [2025-02-06 08:35:01,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628867312] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:35:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302372092] [2025-02-06 08:35:01,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:01,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:01,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:35:01,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:35:01,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 08:35:01,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-06 08:35:01,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-06 08:35:01,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:01,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:01,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 08:35:01,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:35:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 08:35:01,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:35:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 08:35:01,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302372092] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:35:01,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:35:01,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-06 08:35:01,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977172730] [2025-02-06 08:35:01,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:35:01,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 08:35:01,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:01,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 08:35:01,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-02-06 08:35:01,744 INFO L87 Difference]: Start difference. First operand 682 states and 963 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 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) [2025-02-06 08:35:01,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:01,886 INFO L93 Difference]: Finished difference Result 1263 states and 1802 transitions. [2025-02-06 08:35:01,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 08:35:01,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 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 107 [2025-02-06 08:35:01,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:01,889 INFO L225 Difference]: With dead ends: 1263 [2025-02-06 08:35:01,890 INFO L226 Difference]: Without dead ends: 691 [2025-02-06 08:35:01,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2025-02-06 08:35:01,892 INFO L435 NwaCegarLoop]: 511 mSDtfsCounter, 4 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:35:01,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1531 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:35:01,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2025-02-06 08:35:01,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2025-02-06 08:35:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 663 states have (on average 1.405731523378582) internal successors, (932), 680 states have internal predecessors, (932), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2025-02-06 08:35:01,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 976 transitions. [2025-02-06 08:35:01,909 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 976 transitions. Word has length 107 [2025-02-06 08:35:01,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:01,909 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 976 transitions. [2025-02-06 08:35:01,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 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) [2025-02-06 08:35:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 976 transitions. [2025-02-06 08:35:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-06 08:35:01,910 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:01,910 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, 1, 1] [2025-02-06 08:35:01,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 08:35:02,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 08:35:02,111 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:02,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash 31462031, now seen corresponding path program 2 times [2025-02-06 08:35:02,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:02,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81863337] [2025-02-06 08:35:02,112 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:35:02,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:02,142 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 111 statements into 2 equivalence classes. [2025-02-06 08:35:02,166 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 98 of 111 statements. [2025-02-06 08:35:02,166 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 08:35:02,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-06 08:35:02,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:02,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81863337] [2025-02-06 08:35:02,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81863337] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:35:02,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:35:02,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 08:35:02,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997201640] [2025-02-06 08:35:02,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:35:02,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 08:35:02,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:02,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 08:35:02,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-06 08:35:02,538 INFO L87 Difference]: Start difference. First operand 691 states and 976 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2025-02-06 08:35:06,831 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 [] [2025-02-06 08:35:07,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:07,181 INFO L93 Difference]: Finished difference Result 1311 states and 1869 transitions. [2025-02-06 08:35:07,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 08:35:07,182 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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 111 [2025-02-06 08:35:07,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:07,184 INFO L225 Difference]: With dead ends: 1311 [2025-02-06 08:35:07,184 INFO L226 Difference]: Without dead ends: 705 [2025-02-06 08:35:07,185 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 [2025-02-06 08:35:07,186 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 13 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4032 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2025-02-06 08:35:07,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4032 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 913 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2025-02-06 08:35:07,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2025-02-06 08:35:07,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 691. [2025-02-06 08:35:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 663 states have (on average 1.405731523378582) internal successors, (932), 680 states have internal predecessors, (932), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2025-02-06 08:35:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 976 transitions. [2025-02-06 08:35:07,203 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 976 transitions. Word has length 111 [2025-02-06 08:35:07,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:07,205 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 976 transitions. [2025-02-06 08:35:07,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2025-02-06 08:35:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 976 transitions. [2025-02-06 08:35:07,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-06 08:35:07,206 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:07,206 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, 1, 1] [2025-02-06 08:35:07,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 08:35:07,206 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:07,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:07,206 INFO L85 PathProgramCache]: Analyzing trace with hash 420309402, now seen corresponding path program 1 times [2025-02-06 08:35:07,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:07,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57473547] [2025-02-06 08:35:07,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:07,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:07,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-06 08:35:07,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-06 08:35:07,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:07,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 08:35:07,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:07,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57473547] [2025-02-06 08:35:07,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57473547] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:35:07,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82729803] [2025-02-06 08:35:07,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:07,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:07,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:35:07,459 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:35:07,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 08:35:07,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-06 08:35:07,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-06 08:35:07,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:07,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:07,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 08:35:07,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:35:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-06 08:35:07,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:35:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 08:35:08,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82729803] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:35:08,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:35:08,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 14 [2025-02-06 08:35:08,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442860934] [2025-02-06 08:35:08,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:35:08,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 08:35:08,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:08,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 08:35:08,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2025-02-06 08:35:08,011 INFO L87 Difference]: Start difference. First operand 691 states and 976 transitions. Second operand has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 08:35:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:08,287 INFO L93 Difference]: Finished difference Result 1278 states and 1821 transitions. [2025-02-06 08:35:08,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 08:35:08,287 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2025-02-06 08:35:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:08,290 INFO L225 Difference]: With dead ends: 1278 [2025-02-06 08:35:08,290 INFO L226 Difference]: Without dead ends: 697 [2025-02-06 08:35:08,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2025-02-06 08:35:08,291 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 29 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:35:08,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2487 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:35:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2025-02-06 08:35:08,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2025-02-06 08:35:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 667 states have (on average 1.406296851574213) internal successors, (938), 684 states have internal predecessors, (938), 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) [2025-02-06 08:35:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 981 transitions. [2025-02-06 08:35:08,303 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 981 transitions. Word has length 111 [2025-02-06 08:35:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:08,303 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 981 transitions. [2025-02-06 08:35:08,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 08:35:08,304 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 981 transitions. [2025-02-06 08:35:08,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-02-06 08:35:08,304 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:08,304 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, 1] [2025-02-06 08:35:08,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 08:35:08,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:08,505 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:08,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1261425818, now seen corresponding path program 2 times [2025-02-06 08:35:08,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:08,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136959390] [2025-02-06 08:35:08,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:35:08,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:08,538 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 115 statements into 2 equivalence classes. [2025-02-06 08:35:08,559 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 98 of 115 statements. [2025-02-06 08:35:08,559 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 08:35:08,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-02-06 08:35:09,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:09,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136959390] [2025-02-06 08:35:09,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136959390] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:35:09,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:35:09,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 08:35:09,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116458248] [2025-02-06 08:35:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:35:09,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 08:35:09,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:09,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 08:35:09,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-06 08:35:09,019 INFO L87 Difference]: Start difference. First operand 695 states and 981 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2025-02-06 08:35:13,265 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 [] [2025-02-06 08:35:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:13,930 INFO L93 Difference]: Finished difference Result 1336 states and 1897 transitions. [2025-02-06 08:35:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 08:35:13,930 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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 115 [2025-02-06 08:35:13,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:13,933 INFO L225 Difference]: With dead ends: 1336 [2025-02-06 08:35:13,933 INFO L226 Difference]: Without dead ends: 721 [2025-02-06 08:35:13,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2025-02-06 08:35:13,934 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 41 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2025-02-06 08:35:13,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 4045 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 957 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2025-02-06 08:35:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2025-02-06 08:35:13,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 707. [2025-02-06 08:35:13,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 679 states have (on average 1.402061855670103) internal successors, (952), 696 states have internal predecessors, (952), 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) [2025-02-06 08:35:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 995 transitions. [2025-02-06 08:35:13,947 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 995 transitions. Word has length 115 [2025-02-06 08:35:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:13,947 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 995 transitions. [2025-02-06 08:35:13,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2025-02-06 08:35:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 995 transitions. [2025-02-06 08:35:13,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-02-06 08:35:13,948 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:13,948 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, 1] [2025-02-06 08:35:13,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 08:35:13,948 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:13,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:13,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1531549433, now seen corresponding path program 1 times [2025-02-06 08:35:13,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:13,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489738944] [2025-02-06 08:35:13,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:13,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:13,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-02-06 08:35:14,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-02-06 08:35:14,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:14,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 08:35:14,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:14,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489738944] [2025-02-06 08:35:14,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489738944] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:35:14,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467014426] [2025-02-06 08:35:14,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:14,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:14,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:35:14,332 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:35:14,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 08:35:14,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-02-06 08:35:15,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-02-06 08:35:15,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:15,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:15,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 08:35:15,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:35:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-06 08:35:15,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:35:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 9 refuted. 1 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 08:35:19,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467014426] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:35:19,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:35:19,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 22 [2025-02-06 08:35:19,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317979327] [2025-02-06 08:35:19,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:35:19,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-06 08:35:19,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:19,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-06 08:35:19,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=357, Unknown=1, NotChecked=0, Total=462 [2025-02-06 08:35:19,452 INFO L87 Difference]: Start difference. First operand 707 states and 995 transitions. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 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) [2025-02-06 08:35:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:20,248 INFO L93 Difference]: Finished difference Result 1311 states and 1862 transitions. [2025-02-06 08:35:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 08:35:20,249 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 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 115 [2025-02-06 08:35:20,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:20,252 INFO L225 Difference]: With dead ends: 1311 [2025-02-06 08:35:20,256 INFO L226 Difference]: Without dead ends: 716 [2025-02-06 08:35:20,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=383, Invalid=1176, Unknown=1, NotChecked=0, Total=1560 [2025-02-06 08:35:20,258 INFO L435 NwaCegarLoop]: 500 mSDtfsCounter, 49 mSDsluCounter, 5934 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 6434 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 08:35:20,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 6434 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 08:35:20,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2025-02-06 08:35:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 714. [2025-02-06 08:35:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 686 states have (on average 1.403790087463557) internal successors, (963), 703 states have internal predecessors, (963), 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) [2025-02-06 08:35:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1006 transitions. [2025-02-06 08:35:20,294 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1006 transitions. Word has length 115 [2025-02-06 08:35:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:20,294 INFO L471 AbstractCegarLoop]: Abstraction has 714 states and 1006 transitions. [2025-02-06 08:35:20,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 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) [2025-02-06 08:35:20,295 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1006 transitions. [2025-02-06 08:35:20,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-02-06 08:35:20,295 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:20,295 INFO L218 NwaCegarLoop]: trace histogram [17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:35:20,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 08:35:20,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:20,499 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:20,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:20,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1122073479, now seen corresponding path program 2 times [2025-02-06 08:35:20,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:20,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98386497] [2025-02-06 08:35:20,499 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:35:20,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:20,545 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 122 statements into 2 equivalence classes. [2025-02-06 08:35:20,564 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 98 of 122 statements. [2025-02-06 08:35:20,564 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 08:35:20,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-02-06 08:35:20,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:20,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98386497] [2025-02-06 08:35:20,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98386497] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:35:20,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:35:20,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 08:35:20,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006723092] [2025-02-06 08:35:20,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:35:20,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 08:35:20,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:20,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 08:35:20,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:35:20,780 INFO L87 Difference]: Start difference. First operand 714 states and 1006 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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) [2025-02-06 08:35:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:21,215 INFO L93 Difference]: Finished difference Result 1374 states and 1952 transitions. [2025-02-06 08:35:21,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 08:35:21,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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 122 [2025-02-06 08:35:21,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:21,218 INFO L225 Difference]: With dead ends: 1374 [2025-02-06 08:35:21,219 INFO L226 Difference]: Without dead ends: 746 [2025-02-06 08:35:21,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:35:21,220 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 23 mSDsluCounter, 3157 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 08:35:21,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3656 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 08:35:21,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2025-02-06 08:35:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 726. [2025-02-06 08:35:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 698 states have (on average 1.3997134670487106) internal successors, (977), 715 states have internal predecessors, (977), 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) [2025-02-06 08:35:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1020 transitions. [2025-02-06 08:35:21,239 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1020 transitions. Word has length 122 [2025-02-06 08:35:21,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:21,239 INFO L471 AbstractCegarLoop]: Abstraction has 726 states and 1020 transitions. [2025-02-06 08:35:21,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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) [2025-02-06 08:35:21,240 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1020 transitions. [2025-02-06 08:35:21,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-02-06 08:35:21,241 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:21,241 INFO L218 NwaCegarLoop]: trace histogram [17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:35:21,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 08:35:21,241 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:21,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:21,242 INFO L85 PathProgramCache]: Analyzing trace with hash 408067671, now seen corresponding path program 1 times [2025-02-06 08:35:21,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:21,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441568435] [2025-02-06 08:35:21,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:21,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:21,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-06 08:35:21,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-06 08:35:21,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:21,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-02-06 08:35:21,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441568435] [2025-02-06 08:35:21,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441568435] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:35:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531382362] [2025-02-06 08:35:21,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:21,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:21,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:35:21,824 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:35:21,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 08:35:22,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-06 08:35:22,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-06 08:35:22,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:22,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:22,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 171 conjuncts are in the unsatisfiable core [2025-02-06 08:35:22,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:35:22,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 08:35:22,970 INFO L349 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2025-02-06 08:35:22,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2025-02-06 08:35:22,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 08:35:23,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-02-06 08:35:23,317 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 08:35:23,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41