./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.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_SAX_test9-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 08:50:27,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 08:50:27,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 08:50:27,319 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 08:50:27,319 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 08:50:27,343 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 08:50:27,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 08:50:27,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 08:50:27,344 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 08:50:27,344 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 08:50:27,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 08:50:27,345 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 08:50:27,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 08:50:27,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 08:50:27,346 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 08:50:27,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 08:50:27,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 08:50:27,346 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 08:50:27,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 08:50:27,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 08:50:27,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 08:50:27,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 08:50:27,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 08:50:27,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 08:50:27,347 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 08:50:27,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 08:50:27,347 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 08:50:27,347 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 08:50:27,347 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 08:50:27,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 08:50:27,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 08:50:27,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 08:50:27,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:50:27,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 08:50:27,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 08:50:27,348 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 08:50:27,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 08:50:27,348 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 08:50:27,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 08:50:27,348 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 08:50:27,348 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 08:50:27,349 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 08:50:27,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 08:50:27,349 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 -> d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 [2025-02-06 08:50:27,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 08:50:27,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 08:50:27,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 08:50:27,560 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 08:50:27,560 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 08:50:27,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2025-02-06 08:50:28,758 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d8641286/27d22a132978425c92c7b5e73d0a6a36/FLAG845acf3c1 [2025-02-06 08:50:29,143 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 08:50:29,144 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2025-02-06 08:50:29,161 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d8641286/27d22a132978425c92c7b5e73d0a6a36/FLAG845acf3c1 [2025-02-06 08:50:29,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d8641286/27d22a132978425c92c7b5e73d0a6a36 [2025-02-06 08:50:29,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 08:50:29,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 08:50:29,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 08:50:29,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 08:50:29,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 08:50:29,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:29,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f7e525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29, skipping insertion in model container [2025-02-06 08:50:29,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:29,364 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 08:50:29,619 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_SAX_test9-2.i[33021,33034] [2025-02-06 08:50:29,753 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_SAX_test9-2.i[84583,84596] [2025-02-06 08:50:29,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:50:29,770 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 08:50:29,802 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_SAX_test9-2.i[33021,33034] [2025-02-06 08:50:29,881 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_SAX_test9-2.i[84583,84596] [2025-02-06 08:50:29,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:50:29,917 INFO L204 MainTranslator]: Completed translation [2025-02-06 08:50:29,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29 WrapperNode [2025-02-06 08:50:29,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 08:50:29,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 08:50:29,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 08:50:29,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 08:50:29,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:29,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:30,054 INFO L138 Inliner]: procedures = 177, calls = 773, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3403 [2025-02-06 08:50:30,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 08:50:30,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 08:50:30,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 08:50:30,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 08:50:30,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:30,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:30,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:30,158 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [34, 2, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 54 writes are split as follows [4, 0, 50]. [2025-02-06 08:50:30,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:30,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:30,220 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:30,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:30,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:30,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:30,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 08:50:30,257 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 08:50:30,258 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 08:50:30,258 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 08:50:30,259 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (1/1) ... [2025-02-06 08:50:30,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:50:30,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:50:30,285 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 08:50:30,291 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 08:50:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 08:50:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 08:50:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 08:50:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 08:50:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 08:50:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 08:50:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 08:50:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 08:50:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 08:50:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 08:50:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 08:50:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 08:50:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 08:50:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 08:50:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 08:50:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 08:50:30,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 08:50:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 08:50:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 08:50:30,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 08:50:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 08:50:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 08:50:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 08:50:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 08:50:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 08:50:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 08:50:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 08:50:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 08:50:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 08:50:30,502 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 08:50:30,504 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 08:50:32,372 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2218: 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 08:50:32,552 INFO L? ?]: Removed 823 outVars from TransFormulas that were not future-live. [2025-02-06 08:50:32,553 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 08:50:32,636 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 08:50:32,636 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-06 08:50:32,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:50:32 BoogieIcfgContainer [2025-02-06 08:50:32,636 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 08:50:32,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 08:50:32,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 08:50:32,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 08:50:32,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 08:50:29" (1/3) ... [2025-02-06 08:50:32,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cb1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:50:32, skipping insertion in model container [2025-02-06 08:50:32,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:50:29" (2/3) ... [2025-02-06 08:50:32,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cb1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:50:32, skipping insertion in model container [2025-02-06 08:50:32,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:50:32" (3/3) ... [2025-02-06 08:50:32,650 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test9-2.i [2025-02-06 08:50:32,660 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 08:50:32,661 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test9-2.i that has 5 procedures, 1409 locations, 1 initial locations, 38 loop locations, and 2 error locations. [2025-02-06 08:50:32,718 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:50:32,725 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;@65a693ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:50:32,725 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-06 08:50:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 1401 states, 893 states have (on average 1.8297872340425532) internal successors, (1634), 1395 states have internal predecessors, (1634), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-06 08:50:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 08:50:32,776 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:50:32,776 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:50:32,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:50:32,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:50:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash -904108323, now seen corresponding path program 1 times [2025-02-06 08:50:32,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:50:32,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262713129] [2025-02-06 08:50:32,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:50:32,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:50:32,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 08:50:32,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 08:50:32,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:50:32,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:50:32,892 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 08:50:32,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:50:32,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262713129] [2025-02-06 08:50:32,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262713129] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:50:32,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:50:32,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 08:50:32,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754365600] [2025-02-06 08:50:32,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:50:32,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 08:50:32,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:50:32,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 08:50:32,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 08:50:32,915 INFO L87 Difference]: Start difference. First operand has 1401 states, 893 states have (on average 1.8297872340425532) internal successors, (1634), 1395 states have internal predecessors, (1634), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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 08:50:33,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:50:33,128 INFO L93 Difference]: Finished difference Result 2800 states and 5778 transitions. [2025-02-06 08:50:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 08:50:33,129 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 08:50:33,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:50:33,163 INFO L225 Difference]: With dead ends: 2800 [2025-02-06 08:50:33,164 INFO L226 Difference]: Without dead ends: 1364 [2025-02-06 08:50:33,174 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 08:50:33,175 INFO L435 NwaCegarLoop]: 2534 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, 2534 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 08:50:33,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2534 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:50:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2025-02-06 08:50:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2025-02-06 08:50:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 857 states have (on average 1.7736289381563595) internal successors, (1520), 1358 states have internal predecessors, (1520), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-06 08:50:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 2526 transitions. [2025-02-06 08:50:33,442 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 2526 transitions. Word has length 9 [2025-02-06 08:50:33,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:50:33,446 INFO L471 AbstractCegarLoop]: Abstraction has 1364 states and 2526 transitions. [2025-02-06 08:50:33,446 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 08:50:33,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 2526 transitions. [2025-02-06 08:50:33,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-06 08:50:33,448 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:50:33,448 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 08:50:33,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 08:50:33,448 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:50:33,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:50:33,449 INFO L85 PathProgramCache]: Analyzing trace with hash -603747245, now seen corresponding path program 1 times [2025-02-06 08:50:33,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:50:33,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660623696] [2025-02-06 08:50:33,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:50:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:50:33,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 08:50:33,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 08:50:33,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:50:33,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:50:33,826 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 08:50:33,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:50:33,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660623696] [2025-02-06 08:50:33,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660623696] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:50:33,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:50:33,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:50:33,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986506525] [2025-02-06 08:50:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:50:33,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:50:33,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:50:33,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:50:33,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:50:33,830 INFO L87 Difference]: Start difference. First operand 1364 states and 2526 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 08:50:34,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:50:34,600 INFO L93 Difference]: Finished difference Result 3880 states and 7279 transitions. [2025-02-06 08:50:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:50:34,604 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 08:50:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:50:34,624 INFO L225 Difference]: With dead ends: 3880 [2025-02-06 08:50:34,624 INFO L226 Difference]: Without dead ends: 2715 [2025-02-06 08:50:34,629 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 08:50:34,630 INFO L435 NwaCegarLoop]: 2759 mSDtfsCounter, 1505 mSDsluCounter, 4719 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 7478 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 08:50:34,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 7478 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 08:50:34,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2025-02-06 08:50:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 1366. [2025-02-06 08:50:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 859 states have (on average 1.7718277066356227) internal successors, (1522), 1360 states have internal predecessors, (1522), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-06 08:50:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2528 transitions. [2025-02-06 08:50:34,998 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2528 transitions. Word has length 63 [2025-02-06 08:50:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:50:34,998 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 2528 transitions. [2025-02-06 08:50:34,998 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 08:50:34,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2528 transitions. [2025-02-06 08:50:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-06 08:50:35,002 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:50:35,002 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:50:35,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 08:50:35,002 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:50:35,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:50:35,003 INFO L85 PathProgramCache]: Analyzing trace with hash 174221936, now seen corresponding path program 1 times [2025-02-06 08:50:35,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:50:35,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699907717] [2025-02-06 08:50:35,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:50:35,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:50:35,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-06 08:50:35,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-06 08:50:35,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:50:35,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:50:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:50:35,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:50:35,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699907717] [2025-02-06 08:50:35,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699907717] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:50:35,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:50:35,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:50:35,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074653189] [2025-02-06 08:50:35,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:50:35,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:50:35,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:50:35,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:50:35,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:50:35,329 INFO L87 Difference]: Start difference. First operand 1366 states and 2528 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 08:50:35,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:50:35,564 INFO L93 Difference]: Finished difference Result 2686 states and 4986 transitions. [2025-02-06 08:50:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:50:35,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 138 [2025-02-06 08:50:35,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:50:35,573 INFO L225 Difference]: With dead ends: 2686 [2025-02-06 08:50:35,574 INFO L226 Difference]: Without dead ends: 1324 [2025-02-06 08:50:35,577 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 08:50:35,579 INFO L435 NwaCegarLoop]: 2393 mSDtfsCounter, 30 mSDsluCounter, 4767 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7160 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:50:35,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 7160 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:50:35,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2025-02-06 08:50:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1324. [2025-02-06 08:50:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 817 states have (on average 1.7686658506731947) internal successors, (1445), 1318 states have internal predecessors, (1445), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-06 08:50:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2451 transitions. [2025-02-06 08:50:35,698 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2451 transitions. Word has length 138 [2025-02-06 08:50:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:50:35,698 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 2451 transitions. [2025-02-06 08:50:35,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 08:50:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2451 transitions. [2025-02-06 08:50:35,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-06 08:50:35,700 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:50:35,701 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:50:35,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 08:50:35,701 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:50:35,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:50:35,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1776411721, now seen corresponding path program 1 times [2025-02-06 08:50:35,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:50:35,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518330267] [2025-02-06 08:50:35,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:50:35,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:50:35,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-06 08:50:35,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-06 08:50:35,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:50:35,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:50:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:50:35,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:50:35,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518330267] [2025-02-06 08:50:35,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518330267] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:50:35,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:50:35,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:50:35,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395749054] [2025-02-06 08:50:35,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:50:35,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:50:35,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:50:35,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:50:35,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:50:35,868 INFO L87 Difference]: Start difference. First operand 1324 states and 2451 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 08:50:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:50:36,040 INFO L93 Difference]: Finished difference Result 3867 states and 7220 transitions. [2025-02-06 08:50:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:50:36,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 138 [2025-02-06 08:50:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:50:36,054 INFO L225 Difference]: With dead ends: 3867 [2025-02-06 08:50:36,054 INFO L226 Difference]: Without dead ends: 2547 [2025-02-06 08:50:36,057 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 08:50:36,058 INFO L435 NwaCegarLoop]: 2839 mSDtfsCounter, 1260 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 5236 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:50:36,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 5236 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:50:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2025-02-06 08:50:36,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2545. [2025-02-06 08:50:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 1538 states have (on average 1.7971391417425226) internal successors, (2764), 2539 states have internal predecessors, (2764), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 08:50:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 4770 transitions. [2025-02-06 08:50:36,268 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 4770 transitions. Word has length 138 [2025-02-06 08:50:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:50:36,268 INFO L471 AbstractCegarLoop]: Abstraction has 2545 states and 4770 transitions. [2025-02-06 08:50:36,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 08:50:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 4770 transitions. [2025-02-06 08:50:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-02-06 08:50:36,270 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:50:36,270 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:50:36,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 08:50:36,270 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:50:36,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:50:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 856799395, now seen corresponding path program 1 times [2025-02-06 08:50:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:50:36,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73505107] [2025-02-06 08:50:36,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:50:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:50:36,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-02-06 08:50:36,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-02-06 08:50:36,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:50:36,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:50:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 08:50:36,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:50:36,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73505107] [2025-02-06 08:50:36,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73505107] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:50:36,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:50:36,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:50:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918556848] [2025-02-06 08:50:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:50:36,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:50:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:50:36,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:50:36,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:50:36,448 INFO L87 Difference]: Start difference. First operand 2545 states and 4770 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:50:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:50:36,608 INFO L93 Difference]: Finished difference Result 4884 states and 9270 transitions. [2025-02-06 08:50:36,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:50:36,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 153 [2025-02-06 08:50:36,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:50:36,623 INFO L225 Difference]: With dead ends: 4884 [2025-02-06 08:50:36,623 INFO L226 Difference]: Without dead ends: 2585 [2025-02-06 08:50:36,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:50:36,630 INFO L435 NwaCegarLoop]: 2391 mSDtfsCounter, 8 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4767 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:50:36,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4767 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:50:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2025-02-06 08:50:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2585. [2025-02-06 08:50:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 1578 states have (on average 1.7769328263624842) internal successors, (2804), 2579 states have internal predecessors, (2804), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 08:50:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 4810 transitions. [2025-02-06 08:50:36,926 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 4810 transitions. Word has length 153 [2025-02-06 08:50:36,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:50:36,927 INFO L471 AbstractCegarLoop]: Abstraction has 2585 states and 4810 transitions. [2025-02-06 08:50:36,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:50:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 4810 transitions. [2025-02-06 08:50:36,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-02-06 08:50:36,928 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:50:36,929 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:50:36,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 08:50:36,929 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:50:36,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:50:36,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1428064060, now seen corresponding path program 1 times [2025-02-06 08:50:36,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:50:36,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253726346] [2025-02-06 08:50:36,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:50:36,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:50:36,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-02-06 08:50:36,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-02-06 08:50:36,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:50:36,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:50:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 08:50:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:50:37,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253726346] [2025-02-06 08:50:37,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253726346] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:50:37,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:50:37,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:50:37,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771483233] [2025-02-06 08:50:37,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:50:37,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:50:37,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:50:37,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:50:37,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:50:37,133 INFO L87 Difference]: Start difference. First operand 2585 states and 4810 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:50:37,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:50:37,304 INFO L93 Difference]: Finished difference Result 4800 states and 9112 transitions. [2025-02-06 08:50:37,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:50:37,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 153 [2025-02-06 08:50:37,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:50:37,320 INFO L225 Difference]: With dead ends: 4800 [2025-02-06 08:50:37,320 INFO L226 Difference]: Without dead ends: 2461 [2025-02-06 08:50:37,327 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 08:50:37,327 INFO L435 NwaCegarLoop]: 2316 mSDtfsCounter, 32 mSDsluCounter, 4618 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6934 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:50:37,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 6934 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:50:37,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2025-02-06 08:50:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2461. [2025-02-06 08:50:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 1454 states have (on average 1.7909215955983493) internal successors, (2604), 2455 states have internal predecessors, (2604), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 08:50:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 4610 transitions. [2025-02-06 08:50:37,619 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 4610 transitions. Word has length 153 [2025-02-06 08:50:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:50:37,623 INFO L471 AbstractCegarLoop]: Abstraction has 2461 states and 4610 transitions. [2025-02-06 08:50:37,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:50:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 4610 transitions. [2025-02-06 08:50:37,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-02-06 08:50:37,624 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:50:37,624 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:50:37,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 08:50:37,624 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:50:37,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:50:37,625 INFO L85 PathProgramCache]: Analyzing trace with hash -552241123, now seen corresponding path program 1 times [2025-02-06 08:50:37,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:50:37,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457937039] [2025-02-06 08:50:37,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:50:37,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:50:37,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-02-06 08:50:37,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-02-06 08:50:37,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:50:37,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:50:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:50:37,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:50:37,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457937039] [2025-02-06 08:50:37,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457937039] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:50:37,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:50:37,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:50:37,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315229038] [2025-02-06 08:50:37,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:50:37,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:50:37,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:50:37,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:50:37,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:50:37,842 INFO L87 Difference]: Start difference. First operand 2461 states and 4610 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:50:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:50:38,905 INFO L93 Difference]: Finished difference Result 3739 states and 6977 transitions. [2025-02-06 08:50:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:50:38,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 153 [2025-02-06 08:50:38,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:50:38,918 INFO L225 Difference]: With dead ends: 3739 [2025-02-06 08:50:38,919 INFO L226 Difference]: Without dead ends: 1368 [2025-02-06 08:50:38,926 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 08:50:38,926 INFO L435 NwaCegarLoop]: 2398 mSDtfsCounter, 2543 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-06 08:50:38,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2543 Valid, 3528 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-06 08:50:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2025-02-06 08:50:39,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1368. [2025-02-06 08:50:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 861 states have (on average 1.718931475029036) internal successors, (1480), 1362 states have internal predecessors, (1480), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-06 08:50:39,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2486 transitions. [2025-02-06 08:50:39,037 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2486 transitions. Word has length 153 [2025-02-06 08:50:39,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:50:39,038 INFO L471 AbstractCegarLoop]: Abstraction has 1368 states and 2486 transitions. [2025-02-06 08:50:39,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:50:39,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2486 transitions. [2025-02-06 08:50:39,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-02-06 08:50:39,039 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:50:39,039 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:50:39,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 08:50:39,039 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:50:39,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:50:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1275535695, now seen corresponding path program 1 times [2025-02-06 08:50:39,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:50:39,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442151241] [2025-02-06 08:50:39,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:50:39,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:50:39,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-02-06 08:50:39,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-02-06 08:50:39,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:50:39,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:50:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:50:39,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:50:39,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442151241] [2025-02-06 08:50:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442151241] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:50:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206606797] [2025-02-06 08:50:39,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:50:39,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:50:39,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:50:39,622 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 08:50:39,623 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 08:50:39,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-02-06 08:50:39,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-02-06 08:50:39,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:50:39,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:50:39,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 08:50:39,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:50:39,915 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 08:50:40,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:50:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:50:40,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:50:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:50:40,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206606797] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:50:40,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:50:40,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 12 [2025-02-06 08:50:40,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368016184] [2025-02-06 08:50:40,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:50:40,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 08:50:40,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:50:40,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 08:50:40,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-06 08:50:40,277 INFO L87 Difference]: Start difference. First operand 1368 states and 2486 transitions. Second operand has 12 states, 12 states have (on average 26.916666666666668) internal successors, (323), 12 states have internal predecessors, (323), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:50:45,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:50:45,325 INFO L93 Difference]: Finished difference Result 5211 states and 9603 transitions. [2025-02-06 08:50:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 08:50:45,326 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.916666666666668) internal successors, (323), 12 states have internal predecessors, (323), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 163 [2025-02-06 08:50:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:50:45,347 INFO L225 Difference]: With dead ends: 5211 [2025-02-06 08:50:45,347 INFO L226 Difference]: Without dead ends: 4088 [2025-02-06 08:50:45,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 318 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-06 08:50:45,352 INFO L435 NwaCegarLoop]: 1987 mSDtfsCounter, 7447 mSDsluCounter, 13033 mSDsCounter, 0 mSdLazyCounter, 5385 mSolverCounterSat, 1511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8451 SdHoareTripleChecker+Valid, 15020 SdHoareTripleChecker+Invalid, 6896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1511 IncrementalHoareTripleChecker+Valid, 5385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2025-02-06 08:50:45,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8451 Valid, 15020 Invalid, 6896 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1511 Valid, 5385 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2025-02-06 08:50:45,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4088 states. [2025-02-06 08:50:45,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4088 to 1710. [2025-02-06 08:50:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1199 states have (on average 1.6113427856547122) internal successors, (1932), 1700 states have internal predecessors, (1932), 506 states have call successors, (506), 3 states have call predecessors, (506), 3 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2025-02-06 08:50:45,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2944 transitions. [2025-02-06 08:50:45,661 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2944 transitions. Word has length 163 [2025-02-06 08:50:45,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:50:45,661 INFO L471 AbstractCegarLoop]: Abstraction has 1710 states and 2944 transitions. [2025-02-06 08:50:45,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.916666666666668) internal successors, (323), 12 states have internal predecessors, (323), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:50:45,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2944 transitions. [2025-02-06 08:50:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2025-02-06 08:50:45,664 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:50:45,665 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:50:45,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 08:50:45,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:50:45,869 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:50:45,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:50:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash -893393691, now seen corresponding path program 1 times [2025-02-06 08:50:45,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:50:45,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248485161] [2025-02-06 08:50:45,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:50:45,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:50:45,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-02-06 08:50:46,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-02-06 08:50:46,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:50:46,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:50:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:50:48,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:50:48,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248485161] [2025-02-06 08:50:48,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248485161] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:50:48,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850642258] [2025-02-06 08:50:48,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:50:48,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:50:48,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:50:48,287 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 08:50:48,288 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 08:50:48,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-02-06 08:50:48,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-02-06 08:50:48,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:50:48,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:50:48,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 08:50:48,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:50:48,762 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 08:50:48,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:50:48,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:50:49,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:50:49,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:50:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:50:49,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:50:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:50:49,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850642258] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:50:49,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:50:49,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 8] total 24 [2025-02-06 08:50:49,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362334874] [2025-02-06 08:50:49,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:50:49,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 08:50:49,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:50:49,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 08:50:49,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2025-02-06 08:50:49,521 INFO L87 Difference]: Start difference. First operand 1710 states and 2944 transitions. Second operand has 24 states, 24 states have (on average 41.583333333333336) internal successors, (998), 24 states have internal predecessors, (998), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:51:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:51:01,326 INFO L93 Difference]: Finished difference Result 10527 states and 19360 transitions. [2025-02-06 08:51:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 08:51:01,327 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 41.583333333333336) internal successors, (998), 24 states have internal predecessors, (998), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 388 [2025-02-06 08:51:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:51:01,365 INFO L225 Difference]: With dead ends: 10527 [2025-02-06 08:51:01,366 INFO L226 Difference]: Without dead ends: 9404 [2025-02-06 08:51:01,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 765 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 08:51:01,371 INFO L435 NwaCegarLoop]: 6755 mSDtfsCounter, 21420 mSDsluCounter, 31283 mSDsCounter, 0 mSdLazyCounter, 16795 mSolverCounterSat, 3793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24430 SdHoareTripleChecker+Valid, 38038 SdHoareTripleChecker+Invalid, 20588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3793 IncrementalHoareTripleChecker+Valid, 16795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2025-02-06 08:51:01,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24430 Valid, 38038 Invalid, 20588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3793 Valid, 16795 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2025-02-06 08:51:01,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9404 states. [2025-02-06 08:51:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9404 to 2562. [2025-02-06 08:51:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2045 states have (on average 1.4992665036674817) internal successors, (3066), 2546 states have internal predecessors, (3066), 512 states have call successors, (512), 3 states have call predecessors, (512), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2025-02-06 08:51:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 4090 transitions. [2025-02-06 08:51:02,180 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 4090 transitions. Word has length 388 [2025-02-06 08:51:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:51:02,181 INFO L471 AbstractCegarLoop]: Abstraction has 2562 states and 4090 transitions. [2025-02-06 08:51:02,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 41.583333333333336) internal successors, (998), 24 states have internal predecessors, (998), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:51:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 4090 transitions. [2025-02-06 08:51:02,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2025-02-06 08:51:02,210 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:51:02,211 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:51:02,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 08:51:02,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:51:02,412 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:51:02,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:51:02,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2045648347, now seen corresponding path program 2 times [2025-02-06 08:51:02,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:51:02,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774425551] [2025-02-06 08:51:02,414 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:51:02,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:51:02,590 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 838 statements into 2 equivalence classes. [2025-02-06 08:51:02,608 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 73 of 838 statements. [2025-02-06 08:51:02,608 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 08:51:02,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:51:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3381 trivial. 0 not checked. [2025-02-06 08:51:02,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:51:02,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774425551] [2025-02-06 08:51:02,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774425551] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:51:02,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:51:02,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 08:51:02,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549989311] [2025-02-06 08:51:02,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:51:02,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:51:02,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:51:02,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:51:02,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:51:02,721 INFO L87 Difference]: Start difference. First operand 2562 states and 4090 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:51:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:51:03,128 INFO L93 Difference]: Finished difference Result 3689 states and 6255 transitions. [2025-02-06 08:51:03,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:51:03,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 838 [2025-02-06 08:51:03,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:51:03,139 INFO L225 Difference]: With dead ends: 3689 [2025-02-06 08:51:03,139 INFO L226 Difference]: Without dead ends: 2567 [2025-02-06 08:51:03,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:51:03,143 INFO L435 NwaCegarLoop]: 2323 mSDtfsCounter, 14 mSDsluCounter, 9028 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 11351 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:51:03,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 11351 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:51:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2025-02-06 08:51:03,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2564. [2025-02-06 08:51:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2047 states have (on average 1.4987787005373718) internal successors, (3068), 2548 states have internal predecessors, (3068), 512 states have call successors, (512), 3 states have call predecessors, (512), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2025-02-06 08:51:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 4092 transitions. [2025-02-06 08:51:03,353 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 4092 transitions. Word has length 838 [2025-02-06 08:51:03,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:51:03,353 INFO L471 AbstractCegarLoop]: Abstraction has 2564 states and 4092 transitions. [2025-02-06 08:51:03,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:51:03,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 4092 transitions. [2025-02-06 08:51:03,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2025-02-06 08:51:03,366 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:51:03,366 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:51:03,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 08:51:03,367 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:51:03,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:51:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1871294308, now seen corresponding path program 1 times [2025-02-06 08:51:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:51:03,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619835980] [2025-02-06 08:51:03,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:51:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:51:03,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 839 statements into 1 equivalence classes. [2025-02-06 08:51:03,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 839 of 839 statements. [2025-02-06 08:51:03,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:51:03,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:51:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3381 trivial. 0 not checked. [2025-02-06 08:51:04,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:51:04,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619835980] [2025-02-06 08:51:04,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619835980] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:51:04,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:51:04,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 08:51:04,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857152916] [2025-02-06 08:51:04,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:51:04,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:51:04,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:51:04,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:51:04,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:51:04,770 INFO L87 Difference]: Start difference. First operand 2564 states and 4092 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:51:05,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:51:05,142 INFO L93 Difference]: Finished difference Result 3693 states and 6259 transitions. [2025-02-06 08:51:05,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 08:51:05,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 839 [2025-02-06 08:51:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:51:05,154 INFO L225 Difference]: With dead ends: 3693 [2025-02-06 08:51:05,154 INFO L226 Difference]: Without dead ends: 2569 [2025-02-06 08:51:05,158 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 08:51:05,159 INFO L435 NwaCegarLoop]: 2318 mSDtfsCounter, 15 mSDsluCounter, 11304 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13622 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:51:05,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 13622 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:51:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2025-02-06 08:51:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2568. [2025-02-06 08:51:05,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2568 states, 2051 states have (on average 1.4982935153583619) internal successors, (3073), 2552 states have internal predecessors, (3073), 512 states have call successors, (512), 3 states have call predecessors, (512), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2025-02-06 08:51:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 4097 transitions. [2025-02-06 08:51:05,403 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 4097 transitions. Word has length 839 [2025-02-06 08:51:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:51:05,405 INFO L471 AbstractCegarLoop]: Abstraction has 2568 states and 4097 transitions. [2025-02-06 08:51:05,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:51:05,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 4097 transitions. [2025-02-06 08:51:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2025-02-06 08:51:05,416 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:51:05,417 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:51:05,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 08:51:05,417 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:51:05,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:51:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1324876515, now seen corresponding path program 1 times [2025-02-06 08:51:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:51:05,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108764494] [2025-02-06 08:51:05,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:51:05,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:51:05,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 839 statements into 1 equivalence classes. [2025-02-06 08:51:05,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 839 of 839 statements. [2025-02-06 08:51:05,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:51:05,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:51:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:51:13,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:51:13,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108764494] [2025-02-06 08:51:13,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108764494] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:51:13,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605668307] [2025-02-06 08:51:13,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:51:13,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:51:13,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:51:13,786 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 08:51:13,788 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 08:51:14,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 839 statements into 1 equivalence classes. [2025-02-06 08:51:14,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 839 of 839 statements. [2025-02-06 08:51:14,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:51:14,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:51:14,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 4161 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 08:51:14,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:51:14,897 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 08:51:15,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:51:15,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:51:15,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:51:15,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:51:15,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:51:15,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:51:15,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:51:15,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:51:15,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:51:15,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:51:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:51:15,847 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:51:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:51:16,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605668307] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:51:16,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:51:16,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 14] total 48 [2025-02-06 08:51:16,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046980177] [2025-02-06 08:51:16,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:51:16,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-06 08:51:16,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:51:16,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-06 08:51:16,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=1501, Unknown=0, NotChecked=0, Total=2256 [2025-02-06 08:51:16,839 INFO L87 Difference]: Start difference. First operand 2568 states and 4097 transitions. Second operand has 48 states, 48 states have (on average 48.9375) internal successors, (2349), 48 states have internal predecessors, (2349), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)