./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-data/hash_fun.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/heap-data/hash_fun.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0abab60f5c601fd8191c1a2aa712d4ab55460e987c7d41ca7527c2934792cc0b --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 17:33:50,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 17:33:50,256 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 17:33:50,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 17:33:50,264 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 17:33:50,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 17:33:50,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 17:33:50,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 17:33:50,285 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 17:33:50,285 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 17:33:50,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 17:33:50,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 17:33:50,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 17:33:50,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 17:33:50,286 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 17:33:50,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 17:33:50,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 17:33:50,287 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 17:33:50,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 17:33:50,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 17:33:50,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 17:33:50,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 17:33:50,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 17:33:50,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 17:33:50,287 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 17:33:50,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 17:33:50,287 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 17:33:50,287 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 17:33:50,288 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 17:33:50,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 17:33:50,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 17:33:50,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 17:33:50,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:33:50,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 17:33:50,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 17:33:50,289 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 17:33:50,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 17:33:50,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 17:33:50,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 17:33:50,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 17:33:50,289 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 17:33:50,289 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 17:33:50,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 17:33:50,289 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0abab60f5c601fd8191c1a2aa712d4ab55460e987c7d41ca7527c2934792cc0b [2025-03-16 17:33:50,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 17:33:50,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 17:33:50,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 17:33:50,513 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 17:33:50,513 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 17:33:50,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/hash_fun.i [2025-03-16 17:33:51,674 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99502808c/c4669868e9674970b014346d27bc1f5c/FLAG2a0c09117 [2025-03-16 17:33:51,942 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 17:33:51,943 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/hash_fun.i [2025-03-16 17:33:51,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99502808c/c4669868e9674970b014346d27bc1f5c/FLAG2a0c09117 [2025-03-16 17:33:51,970 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99502808c/c4669868e9674970b014346d27bc1f5c [2025-03-16 17:33:51,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 17:33:51,974 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 17:33:51,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 17:33:51,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 17:33:51,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 17:33:51,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:33:51" (1/1) ... [2025-03-16 17:33:51,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c87b91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:51, skipping insertion in model container [2025-03-16 17:33:51,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:33:51" (1/1) ... [2025-03-16 17:33:52,008 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 17:33:52,207 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/hash_fun.i[23732,23745] [2025-03-16 17:33:52,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:33:52,218 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 17:33:52,246 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/hash_fun.i[23732,23745] [2025-03-16 17:33:52,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:33:52,264 INFO L204 MainTranslator]: Completed translation [2025-03-16 17:33:52,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52 WrapperNode [2025-03-16 17:33:52,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 17:33:52,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 17:33:52,266 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 17:33:52,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 17:33:52,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,291 INFO L138 Inliner]: procedures = 125, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2025-03-16 17:33:52,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 17:33:52,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 17:33:52,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 17:33:52,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 17:33:52,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,311 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 5, 8]. 53 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 4 writes are split as follows [0, 2, 2]. [2025-03-16 17:33:52,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,315 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,316 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,318 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 17:33:52,320 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 17:33:52,320 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 17:33:52,320 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 17:33:52,321 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (1/1) ... [2025-03-16 17:33:52,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:33:52,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:33:52,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 17:33:52,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-16 17:33:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-16 17:33:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-16 17:33:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 17:33:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-16 17:33:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-16 17:33:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-16 17:33:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 17:33:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 17:33:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 17:33:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 17:33:52,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 17:33:52,458 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 17:33:52,459 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 17:33:52,611 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L572: havoc hash_fun_#t~nondet3#1; [2025-03-16 17:33:52,616 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-03-16 17:33:52,616 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 17:33:52,625 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 17:33:52,626 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 17:33:52,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:33:52 BoogieIcfgContainer [2025-03-16 17:33:52,626 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 17:33:52,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 17:33:52,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 17:33:52,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 17:33:52,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 05:33:51" (1/3) ... [2025-03-16 17:33:52,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e80679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:33:52, skipping insertion in model container [2025-03-16 17:33:52,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:33:52" (2/3) ... [2025-03-16 17:33:52,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e80679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:33:52, skipping insertion in model container [2025-03-16 17:33:52,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:33:52" (3/3) ... [2025-03-16 17:33:52,634 INFO L128 eAbstractionObserver]: Analyzing ICFG hash_fun.i [2025-03-16 17:33:52,644 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 17:33:52,645 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hash_fun.i that has 1 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-16 17:33:52,688 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 17:33:52,698 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;@72dd98a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 17:33:52,698 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 17:33:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:52,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-16 17:33:52,706 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:52,706 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:33:52,706 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:52,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:52,711 INFO L85 PathProgramCache]: Analyzing trace with hash -224753114, now seen corresponding path program 1 times [2025-03-16 17:33:52,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:52,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691985368] [2025-03-16 17:33:52,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:52,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:52,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 17:33:52,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 17:33:52,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:52,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:52,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:52,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691985368] [2025-03-16 17:33:52,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691985368] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:33:52,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:33:52,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 17:33:52,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511616138] [2025-03-16 17:33:52,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:33:52,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 17:33:52,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:52,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 17:33:52,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 17:33:52,876 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:52,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:52,885 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2025-03-16 17:33:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 17:33:52,887 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2025-03-16 17:33:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:52,893 INFO L225 Difference]: With dead ends: 27 [2025-03-16 17:33:52,893 INFO L226 Difference]: Without dead ends: 14 [2025-03-16 17:33:52,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 17:33:52,900 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:33:52,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:33:52,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-16 17:33:52,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-16 17:33:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2025-03-16 17:33:52,925 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 7 [2025-03-16 17:33:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:52,925 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2025-03-16 17:33:52,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2025-03-16 17:33:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-16 17:33:52,926 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:52,926 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:33:52,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 17:33:52,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:52,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:52,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1051079470, now seen corresponding path program 1 times [2025-03-16 17:33:52,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:52,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761019829] [2025-03-16 17:33:52,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:52,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:52,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-16 17:33:52,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-16 17:33:52,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:52,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:53,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:53,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761019829] [2025-03-16 17:33:53,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761019829] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:33:53,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:33:53,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 17:33:53,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217995433] [2025-03-16 17:33:53,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:33:53,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 17:33:53,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:53,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 17:33:53,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 17:33:53,077 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:53,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:53,126 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2025-03-16 17:33:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 17:33:53,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-16 17:33:53,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:53,127 INFO L225 Difference]: With dead ends: 29 [2025-03-16 17:33:53,127 INFO L226 Difference]: Without dead ends: 20 [2025-03-16 17:33:53,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 17:33:53,128 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:33:53,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 42 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:33:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-03-16 17:33:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-03-16 17:33:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2025-03-16 17:33:53,133 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 8 [2025-03-16 17:33:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:53,134 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2025-03-16 17:33:53,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2025-03-16 17:33:53,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-16 17:33:53,134 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:53,134 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:33:53,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 17:33:53,134 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:53,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:53,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1501340780, now seen corresponding path program 1 times [2025-03-16 17:33:53,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:53,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271612953] [2025-03-16 17:33:53,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:53,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-16 17:33:53,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-16 17:33:53,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:53,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:53,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:53,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271612953] [2025-03-16 17:33:53,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271612953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:33:53,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:33:53,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 17:33:53,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236026260] [2025-03-16 17:33:53,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:33:53,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 17:33:53,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:53,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 17:33:53,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 17:33:53,460 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:53,507 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2025-03-16 17:33:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 17:33:53,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2025-03-16 17:33:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:53,508 INFO L225 Difference]: With dead ends: 30 [2025-03-16 17:33:53,508 INFO L226 Difference]: Without dead ends: 28 [2025-03-16 17:33:53,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 17:33:53,509 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:33:53,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 39 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:33:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-16 17:33:53,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2025-03-16 17:33:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:53,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2025-03-16 17:33:53,512 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 14 [2025-03-16 17:33:53,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:53,512 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2025-03-16 17:33:53,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:53,512 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2025-03-16 17:33:53,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-16 17:33:53,512 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:53,513 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:33:53,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 17:33:53,513 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:53,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:53,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1501339819, now seen corresponding path program 1 times [2025-03-16 17:33:53,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:53,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950508305] [2025-03-16 17:33:53,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:53,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:53,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-16 17:33:53,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-16 17:33:53,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:53,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:53,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:53,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950508305] [2025-03-16 17:33:53,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950508305] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:33:53,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:33:53,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 17:33:53,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765502529] [2025-03-16 17:33:53,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:33:53,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 17:33:53,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:53,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 17:33:53,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 17:33:53,645 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:53,702 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2025-03-16 17:33:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 17:33:53,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2025-03-16 17:33:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:53,703 INFO L225 Difference]: With dead ends: 32 [2025-03-16 17:33:53,703 INFO L226 Difference]: Without dead ends: 25 [2025-03-16 17:33:53,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 17:33:53,704 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:33:53,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:33:53,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-16 17:33:53,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2025-03-16 17:33:53,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2025-03-16 17:33:53,706 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 14 [2025-03-16 17:33:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:53,708 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-03-16 17:33:53,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2025-03-16 17:33:53,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-16 17:33:53,709 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:53,710 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:33:53,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 17:33:53,710 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:53,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:53,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1796570133, now seen corresponding path program 1 times [2025-03-16 17:33:53,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:53,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135401658] [2025-03-16 17:33:53,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:53,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:53,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-16 17:33:53,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-16 17:33:53,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:53,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:54,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135401658] [2025-03-16 17:33:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135401658] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:33:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448998755] [2025-03-16 17:33:54,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:54,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:33:54,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:33:54,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:33:54,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 17:33:54,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-16 17:33:54,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-16 17:33:54,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:54,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:54,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-16 17:33:54,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:33:54,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:33:54,259 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 [2025-03-16 17:33:54,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-03-16 17:33:54,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:33:54,341 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 [2025-03-16 17:33:54,348 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 34 treesize of output 22 [2025-03-16 17:33:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:54,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:33:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:54,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448998755] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:33:54,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:33:54,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2025-03-16 17:33:54,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502403102] [2025-03-16 17:33:54,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:33:54,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 17:33:54,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:54,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 17:33:54,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 17:33:54,447 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:54,494 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2025-03-16 17:33:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 17:33:54,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 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 19 [2025-03-16 17:33:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:54,495 INFO L225 Difference]: With dead ends: 44 [2025-03-16 17:33:54,495 INFO L226 Difference]: Without dead ends: 30 [2025-03-16 17:33:54,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 17:33:54,495 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 17:33:54,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 63 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 17:33:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-03-16 17:33:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-03-16 17:33:54,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2025-03-16 17:33:54,499 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 19 [2025-03-16 17:33:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:54,500 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2025-03-16 17:33:54,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2025-03-16 17:33:54,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-16 17:33:54,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:54,501 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-16 17:33:54,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 17:33:54,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:33:54,706 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:54,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:54,706 INFO L85 PathProgramCache]: Analyzing trace with hash 968308719, now seen corresponding path program 2 times [2025-03-16 17:33:54,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:54,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421064107] [2025-03-16 17:33:54,707 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:33:54,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:54,719 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-16 17:33:54,736 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-16 17:33:54,736 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 17:33:54,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421064107] [2025-03-16 17:33:55,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421064107] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:33:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934810608] [2025-03-16 17:33:55,287 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:33:55,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:33:55,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:33:55,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:33:55,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 17:33:55,356 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-16 17:33:55,382 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-16 17:33:55,382 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 17:33:55,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:55,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-16 17:33:55,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:33:55,398 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 15 treesize of output 1 [2025-03-16 17:33:55,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-16 17:33:55,404 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 27 treesize of output 1 [2025-03-16 17:33:55,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:33:55,444 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 [2025-03-16 17:33:55,465 INFO L349 Elim1Store]: treesize reduction 26, result has 44.7 percent of original size [2025-03-16 17:33:55,465 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 1 case distinctions, treesize of input 27 treesize of output 41 [2025-03-16 17:33:55,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 15 [2025-03-16 17:33:55,474 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 52 treesize of output 25 [2025-03-16 17:33:55,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-03-16 17:33:55,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 1 [2025-03-16 17:33:55,585 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 [2025-03-16 17:33:55,591 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 61 treesize of output 41 [2025-03-16 17:33:55,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2025-03-16 17:33:55,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-03-16 17:33:55,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2025-03-16 17:33:55,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-16 17:33:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:55,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:33:55,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 17:33:55,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2025-03-16 17:33:55,706 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|v_ULTIMATE.start_append_to_list_#t~malloc4#1.base_18| Int)) (or (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_append_to_list_#t~malloc4#1.base_18| v_arrayElimArr_1) (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (+ |c_ULTIMATE.start_main_~base~0#1| 100)) (< (+ |c_ULTIMATE.start_main_~base~0#1| 99) (select v_arrayElimArr_1 0)))) is different from false [2025-03-16 17:33:55,732 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|v_ULTIMATE.start_append_to_list_#t~malloc4#1.base_18| Int)) (let ((.cse0 (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_append_to_list_#t~malloc4#1.base_18| v_arrayElimArr_1) (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)))) (or (< .cse0 (+ |c_ULTIMATE.start_main_~base~0#1| 100)) (< .cse0 (+ (select v_arrayElimArr_1 0) 1))))) is different from false [2025-03-16 17:33:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2025-03-16 17:33:55,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934810608] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:33:55,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:33:55,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 7] total 12 [2025-03-16 17:33:55,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777493426] [2025-03-16 17:33:55,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:33:55,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-16 17:33:55,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:55,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-16 17:33:55,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=65, Unknown=2, NotChecked=34, Total=132 [2025-03-16 17:33:55,771 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:55,937 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2025-03-16 17:33:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 17:33:55,937 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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 25 [2025-03-16 17:33:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:55,938 INFO L225 Difference]: With dead ends: 41 [2025-03-16 17:33:55,938 INFO L226 Difference]: Without dead ends: 39 [2025-03-16 17:33:55,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=123, Unknown=2, NotChecked=50, Total=240 [2025-03-16 17:33:55,939 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:33:55,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 101 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2025-03-16 17:33:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-03-16 17:33:55,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2025-03-16 17:33:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2025-03-16 17:33:55,943 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 25 [2025-03-16 17:33:55,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:55,944 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2025-03-16 17:33:55,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:55,944 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2025-03-16 17:33:55,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-16 17:33:55,945 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:55,945 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:33:55,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 17:33:56,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-16 17:33:56,146 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:56,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash 968309680, now seen corresponding path program 1 times [2025-03-16 17:33:56,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:56,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727349950] [2025-03-16 17:33:56,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:56,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:56,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-16 17:33:56,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-16 17:33:56,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:56,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:56,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:56,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727349950] [2025-03-16 17:33:56,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727349950] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:33:56,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990622628] [2025-03-16 17:33:56,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:33:56,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:33:56,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:33:56,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:33:56,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 17:33:56,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-16 17:33:56,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-16 17:33:56,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:33:56,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:56,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-16 17:33:56,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:33:56,630 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 15 treesize of output 1 [2025-03-16 17:33:56,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-03-16 17:33:56,637 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 27 treesize of output 1 [2025-03-16 17:33:56,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-16 17:33:56,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 15 [2025-03-16 17:33:56,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:56,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 17 [2025-03-16 17:33:56,699 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 53 treesize of output 26 [2025-03-16 17:33:56,708 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2025-03-16 17:33:56,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2025-03-16 17:33:56,714 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 [2025-03-16 17:33:56,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:33:56,795 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 64 treesize of output 40 [2025-03-16 17:33:56,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2025-03-16 17:33:56,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-03-16 17:33:56,805 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 [2025-03-16 17:33:56,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2025-03-16 17:33:56,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-16 17:33:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:56,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:33:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:56,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990622628] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:33:56,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:33:56,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2025-03-16 17:33:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922483551] [2025-03-16 17:33:56,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:33:56,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-16 17:33:56,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:56,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-16 17:33:56,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-16 17:33:56,976 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:57,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:57,124 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2025-03-16 17:33:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 17:33:57,125 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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 25 [2025-03-16 17:33:57,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:57,125 INFO L225 Difference]: With dead ends: 43 [2025-03-16 17:33:57,125 INFO L226 Difference]: Without dead ends: 36 [2025-03-16 17:33:57,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2025-03-16 17:33:57,126 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:33:57,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 113 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:33:57,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-16 17:33:57,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2025-03-16 17:33:57,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2025-03-16 17:33:57,129 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 25 [2025-03-16 17:33:57,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:57,129 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2025-03-16 17:33:57,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2025-03-16 17:33:57,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-16 17:33:57,129 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:57,130 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2025-03-16 17:33:57,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 17:33:57,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:33:57,334 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:57,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash -449568614, now seen corresponding path program 3 times [2025-03-16 17:33:57,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:57,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34641296] [2025-03-16 17:33:57,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 17:33:57,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:57,348 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 3 equivalence classes. [2025-03-16 17:33:57,367 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-03-16 17:33:57,367 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-16 17:33:57,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:57,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:57,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34641296] [2025-03-16 17:33:57,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34641296] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:33:57,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229881709] [2025-03-16 17:33:57,925 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 17:33:57,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:33:57,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:33:57,928 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:33:57,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 17:33:57,993 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 3 equivalence classes. [2025-03-16 17:33:58,023 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-03-16 17:33:58,024 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-16 17:33:58,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:58,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-16 17:33:58,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:33:58,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-03-16 17:33:58,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-03-16 17:33:58,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:33:58,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:33:58,082 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 [2025-03-16 17:33:58,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:58,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2025-03-16 17:33:58,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:58,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2025-03-16 17:33:58,138 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 62 treesize of output 31 [2025-03-16 17:33:58,145 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2025-03-16 17:33:58,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2025-03-16 17:33:58,154 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 [2025-03-16 17:33:58,233 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 [2025-03-16 17:33:58,236 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 77 treesize of output 49 [2025-03-16 17:33:58,350 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 50 treesize of output 34 [2025-03-16 17:33:58,353 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 [2025-03-16 17:33:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:58,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:33:58,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 17:33:58,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 49 [2025-03-16 17:33:58,610 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:33:58,611 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:33:58,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2025-03-16 17:33:58,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:58,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2025-03-16 17:33:58,619 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:33:58,631 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:58,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229881709] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:33:58,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:33:58,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-03-16 17:33:58,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498238448] [2025-03-16 17:33:58,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:33:58,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-16 17:33:58,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:33:58,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-16 17:33:58,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-03-16 17:33:58,632 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:58,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:33:58,758 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2025-03-16 17:33:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 17:33:58,758 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 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 30 [2025-03-16 17:33:58,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:33:58,758 INFO L225 Difference]: With dead ends: 60 [2025-03-16 17:33:58,758 INFO L226 Difference]: Without dead ends: 41 [2025-03-16 17:33:58,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-03-16 17:33:58,759 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:33:58,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 198 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:33:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-03-16 17:33:58,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-03-16 17:33:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:58,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2025-03-16 17:33:58,762 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 30 [2025-03-16 17:33:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:33:58,762 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2025-03-16 17:33:58,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:33:58,763 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2025-03-16 17:33:58,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-16 17:33:58,763 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:33:58,763 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2025-03-16 17:33:58,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 17:33:58,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:33:58,965 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:33:58,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:33:58,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1459201920, now seen corresponding path program 4 times [2025-03-16 17:33:58,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:33:58,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709704077] [2025-03-16 17:33:58,965 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 17:33:58,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:33:58,982 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-16 17:33:59,012 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-16 17:33:59,012 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 17:33:59,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:33:59,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:33:59,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709704077] [2025-03-16 17:33:59,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709704077] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:33:59,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100963884] [2025-03-16 17:33:59,752 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 17:33:59,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:33:59,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:33:59,754 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:33:59,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 17:33:59,828 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-16 17:33:59,860 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-16 17:33:59,860 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 17:33:59,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:33:59,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 71 conjuncts are in the unsatisfiable core [2025-03-16 17:33:59,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:33:59,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-03-16 17:33:59,878 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 15 treesize of output 1 [2025-03-16 17:33:59,880 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 27 treesize of output 1 [2025-03-16 17:33:59,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-16 17:33:59,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:33:59,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 15 [2025-03-16 17:33:59,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:33:59,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 17 [2025-03-16 17:33:59,929 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 53 treesize of output 26 [2025-03-16 17:33:59,943 INFO L349 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2025-03-16 17:33:59,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 45 [2025-03-16 17:33:59,952 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 [2025-03-16 17:34:00,064 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 [2025-03-16 17:34:00,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:00,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 49 [2025-03-16 17:34:00,078 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 97 treesize of output 54 [2025-03-16 17:34:00,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:00,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2025-03-16 17:34:00,099 INFO L349 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2025-03-16 17:34:00,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 45 [2025-03-16 17:34:00,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-03-16 17:34:00,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:00,123 INFO L349 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2025-03-16 17:34:00,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2025-03-16 17:34:00,246 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 [2025-03-16 17:34:00,251 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 111 treesize of output 75 [2025-03-16 17:34:00,359 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 50 treesize of output 34 [2025-03-16 17:34:00,366 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-16 17:34:00,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 39 [2025-03-16 17:34:00,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-16 17:34:00,375 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 [2025-03-16 17:34:00,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2025-03-16 17:34:00,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-16 17:34:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:00,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:34:00,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 17:34:00,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 94 [2025-03-16 17:34:00,573 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:00,578 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:00,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 71 [2025-03-16 17:34:00,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2025-03-16 17:34:00,587 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:00,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2025-03-16 17:34:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:00,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100963884] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:34:00,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:34:00,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2025-03-16 17:34:00,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385908615] [2025-03-16 17:34:00,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:34:00,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-16 17:34:00,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:34:00,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-16 17:34:00,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2025-03-16 17:34:00,667 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:34:01,041 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2025-03-16 17:34:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-16 17:34:01,042 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 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 36 [2025-03-16 17:34:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:34:01,042 INFO L225 Difference]: With dead ends: 52 [2025-03-16 17:34:01,042 INFO L226 Difference]: Without dead ends: 50 [2025-03-16 17:34:01,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2025-03-16 17:34:01,043 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 17:34:01,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 139 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 17:34:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-03-16 17:34:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2025-03-16 17:34:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2025-03-16 17:34:01,047 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 36 [2025-03-16 17:34:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:34:01,047 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2025-03-16 17:34:01,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.117647058823529) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:01,047 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2025-03-16 17:34:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-16 17:34:01,048 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:34:01,048 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-16 17:34:01,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 17:34:01,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:34:01,248 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:34:01,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:34:01,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1459200959, now seen corresponding path program 2 times [2025-03-16 17:34:01,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:34:01,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215624725] [2025-03-16 17:34:01,249 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:34:01,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:34:01,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-16 17:34:01,272 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-16 17:34:01,272 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 17:34:01,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:34:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:01,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:34:01,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215624725] [2025-03-16 17:34:01,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215624725] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:34:01,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727790636] [2025-03-16 17:34:01,987 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:34:01,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:34:01,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:34:01,989 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:34:01,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 17:34:02,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-16 17:34:02,099 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-16 17:34:02,099 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 17:34:02,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:34:02,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-16 17:34:02,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:34:02,109 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 27 treesize of output 1 [2025-03-16 17:34:02,112 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 15 treesize of output 1 [2025-03-16 17:34:02,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-16 17:34:02,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-03-16 17:34:02,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:34:02,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 15 [2025-03-16 17:34:02,172 INFO L349 Elim1Store]: treesize reduction 38, result has 36.7 percent of original size [2025-03-16 17:34:02,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 37 [2025-03-16 17:34:02,176 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 65 treesize of output 34 [2025-03-16 17:34:02,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2025-03-16 17:34:02,199 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 [2025-03-16 17:34:02,279 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 116 treesize of output 73 [2025-03-16 17:34:02,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:02,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 42 [2025-03-16 17:34:02,299 INFO L349 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2025-03-16 17:34:02,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 45 [2025-03-16 17:34:02,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-03-16 17:34:02,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:02,316 INFO L349 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2025-03-16 17:34:02,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2025-03-16 17:34:02,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:02,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2025-03-16 17:34:02,329 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 [2025-03-16 17:34:02,429 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 [2025-03-16 17:34:02,433 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 111 treesize of output 75 [2025-03-16 17:34:02,529 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 50 treesize of output 34 [2025-03-16 17:34:02,536 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-16 17:34:02,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 39 [2025-03-16 17:34:02,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-16 17:34:02,543 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 [2025-03-16 17:34:02,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2025-03-16 17:34:02,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-16 17:34:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:02,561 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:34:02,692 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:02,694 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:02,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727790636] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:34:02,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:34:02,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2025-03-16 17:34:02,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432422825] [2025-03-16 17:34:02,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:34:02,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-16 17:34:02,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:34:02,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-16 17:34:02,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=223, Unknown=1, NotChecked=0, Total=272 [2025-03-16 17:34:02,769 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:34:03,149 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2025-03-16 17:34:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-16 17:34:03,149 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-03-16 17:34:03,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:34:03,151 INFO L225 Difference]: With dead ends: 54 [2025-03-16 17:34:03,151 INFO L226 Difference]: Without dead ends: 47 [2025-03-16 17:34:03,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=493, Unknown=1, NotChecked=0, Total=650 [2025-03-16 17:34:03,151 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 74 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:34:03,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 142 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:34:03,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-03-16 17:34:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2025-03-16 17:34:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2025-03-16 17:34:03,157 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 36 [2025-03-16 17:34:03,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:34:03,159 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2025-03-16 17:34:03,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2025-03-16 17:34:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-16 17:34:03,160 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:34:03,160 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2025-03-16 17:34:03,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 17:34:03,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:34:03,360 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:34:03,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:34:03,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1103606441, now seen corresponding path program 5 times [2025-03-16 17:34:03,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:34:03,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13471577] [2025-03-16 17:34:03,361 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 17:34:03,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:34:03,378 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 41 statements into 4 equivalence classes. [2025-03-16 17:34:03,401 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 41 of 41 statements. [2025-03-16 17:34:03,401 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-16 17:34:03,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:34:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:04,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:34:04,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13471577] [2025-03-16 17:34:04,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13471577] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:34:04,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30003245] [2025-03-16 17:34:04,184 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 17:34:04,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:34:04,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:34:04,186 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:34:04,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 17:34:04,272 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 41 statements into 4 equivalence classes. [2025-03-16 17:34:04,372 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 41 of 41 statements. [2025-03-16 17:34:04,372 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-16 17:34:04,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:34:04,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-03-16 17:34:04,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:34:04,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-03-16 17:34:04,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:34:04,401 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 [2025-03-16 17:34:04,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-03-16 17:34:04,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:34:04,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:04,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2025-03-16 17:34:04,458 INFO L349 Elim1Store]: treesize reduction 38, result has 36.7 percent of original size [2025-03-16 17:34:04,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 37 [2025-03-16 17:34:04,462 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 74 treesize of output 39 [2025-03-16 17:34:04,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2025-03-16 17:34:04,475 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 [2025-03-16 17:34:04,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:04,579 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2025-03-16 17:34:04,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 60 [2025-03-16 17:34:04,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:04,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:04,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 44 [2025-03-16 17:34:04,586 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 110 treesize of output 63 [2025-03-16 17:34:04,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:04,601 INFO L349 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2025-03-16 17:34:04,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2025-03-16 17:34:04,611 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 [2025-03-16 17:34:04,712 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 [2025-03-16 17:34:04,716 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 128 treesize of output 88 [2025-03-16 17:34:04,813 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 50 treesize of output 34 [2025-03-16 17:34:04,825 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 [2025-03-16 17:34:04,925 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 54 treesize of output 38 [2025-03-16 17:34:04,930 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 [2025-03-16 17:34:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:04,938 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:34:09,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 17:34:09,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 378 treesize of output 279 [2025-03-16 17:34:09,760 INFO L349 Elim1Store]: treesize reduction 16, result has 90.3 percent of original size [2025-03-16 17:34:09,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 9732 treesize of output 9382 [2025-03-16 17:34:09,918 INFO L349 Elim1Store]: treesize reduction 8, result has 91.0 percent of original size [2025-03-16 17:34:09,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 5313 treesize of output 5275 [2025-03-16 17:34:10,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 17:34:10,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 752 treesize of output 793 [2025-03-16 17:34:10,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2025-03-16 17:34:10,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2025-03-16 17:34:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:10,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30003245] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:34:10,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:34:10,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2025-03-16 17:34:10,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508554155] [2025-03-16 17:34:10,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:34:10,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-16 17:34:10,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:34:10,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-16 17:34:10,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=285, Unknown=1, NotChecked=0, Total=342 [2025-03-16 17:34:10,849 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:11,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:34:11,359 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2025-03-16 17:34:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 17:34:11,359 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 18 states have internal predecessors, (97), 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 41 [2025-03-16 17:34:11,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:34:11,359 INFO L225 Difference]: With dead ends: 76 [2025-03-16 17:34:11,359 INFO L226 Difference]: Without dead ends: 52 [2025-03-16 17:34:11,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=66, Invalid=353, Unknown=1, NotChecked=0, Total=420 [2025-03-16 17:34:11,360 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 26 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 17:34:11,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 366 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 17:34:11,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-03-16 17:34:11,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-03-16 17:34:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 51 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2025-03-16 17:34:11,363 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 41 [2025-03-16 17:34:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:34:11,363 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2025-03-16 17:34:11,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:11,363 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2025-03-16 17:34:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-16 17:34:11,364 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:34:11,364 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2025-03-16 17:34:11,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-16 17:34:11,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:34:11,564 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:34:11,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:34:11,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1524084483, now seen corresponding path program 6 times [2025-03-16 17:34:11,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:34:11,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414078922] [2025-03-16 17:34:11,565 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 17:34:11,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:34:11,583 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 47 statements into 5 equivalence classes. [2025-03-16 17:34:11,610 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 47 of 47 statements. [2025-03-16 17:34:11,610 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-03-16 17:34:11,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:34:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 17 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:12,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:34:12,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414078922] [2025-03-16 17:34:12,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414078922] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:34:12,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944064507] [2025-03-16 17:34:12,917 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 17:34:12,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:34:12,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:34:12,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:34:12,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 17:34:13,005 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 47 statements into 5 equivalence classes. [2025-03-16 17:34:13,423 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 47 of 47 statements. [2025-03-16 17:34:13,423 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-03-16 17:34:13,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:34:13,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 103 conjuncts are in the unsatisfiable core [2025-03-16 17:34:13,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:34:13,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-03-16 17:34:13,451 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 15 treesize of output 1 [2025-03-16 17:34:13,454 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 27 treesize of output 1 [2025-03-16 17:34:13,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-16 17:34:13,491 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 [2025-03-16 17:34:13,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 15 [2025-03-16 17:34:13,516 INFO L349 Elim1Store]: treesize reduction 38, result has 36.7 percent of original size [2025-03-16 17:34:13,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 37 [2025-03-16 17:34:13,520 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 65 treesize of output 34 [2025-03-16 17:34:13,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2025-03-16 17:34:13,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:34:13,645 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 116 treesize of output 73 [2025-03-16 17:34:13,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:13,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 42 [2025-03-16 17:34:13,673 INFO L349 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2025-03-16 17:34:13,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 45 [2025-03-16 17:34:13,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-03-16 17:34:13,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:13,704 INFO L349 Elim1Store]: treesize reduction 62, result has 38.0 percent of original size [2025-03-16 17:34:13,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 69 [2025-03-16 17:34:13,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:13,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2025-03-16 17:34:13,730 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 [2025-03-16 17:34:13,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:13,895 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2025-03-16 17:34:13,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 145 treesize of output 75 [2025-03-16 17:34:13,900 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 161 treesize of output 102 [2025-03-16 17:34:13,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:13,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:13,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:13,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 52 [2025-03-16 17:34:13,922 INFO L349 Elim1Store]: treesize reduction 53, result has 45.9 percent of original size [2025-03-16 17:34:13,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 53 [2025-03-16 17:34:13,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-03-16 17:34:13,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:13,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:13,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:13,945 INFO L349 Elim1Store]: treesize reduction 4, result has 85.7 percent of original size [2025-03-16 17:34:13,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 37 [2025-03-16 17:34:13,953 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 [2025-03-16 17:34:14,101 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 [2025-03-16 17:34:14,105 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 174 treesize of output 126 [2025-03-16 17:34:14,244 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 50 treesize of output 34 [2025-03-16 17:34:14,259 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 [2025-03-16 17:34:14,391 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 54 treesize of output 38 [2025-03-16 17:34:14,406 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2025-03-16 17:34:14,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 61 [2025-03-16 17:34:14,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-16 17:34:14,415 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 [2025-03-16 17:34:14,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2025-03-16 17:34:14,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-16 17:34:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 17 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:14,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:34:14,837 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:14,837 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:14,838 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:14,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 533 treesize of output 500 [2025-03-16 17:34:14,844 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:14,844 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:14,845 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:14,847 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:14,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 128 [2025-03-16 17:34:14,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 17 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:15,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944064507] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:34:15,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:34:15,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2025-03-16 17:34:15,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653709658] [2025-03-16 17:34:15,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:34:15,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-16 17:34:15,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:34:15,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-16 17:34:15,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2025-03-16 17:34:15,005 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:34:15,969 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2025-03-16 17:34:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-16 17:34:15,970 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 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 47 [2025-03-16 17:34:15,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:34:15,971 INFO L225 Difference]: With dead ends: 63 [2025-03-16 17:34:15,972 INFO L226 Difference]: Without dead ends: 61 [2025-03-16 17:34:15,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=289, Invalid=1043, Unknown=0, NotChecked=0, Total=1332 [2025-03-16 17:34:15,973 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 94 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 17:34:15,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 233 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 17:34:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-03-16 17:34:15,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2025-03-16 17:34:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2025-03-16 17:34:15,980 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 47 [2025-03-16 17:34:15,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:34:15,980 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2025-03-16 17:34:15,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.25) internal successors, (126), 24 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2025-03-16 17:34:15,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-16 17:34:15,982 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:34:15,982 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2025-03-16 17:34:15,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-16 17:34:16,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-16 17:34:16,183 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:34:16,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:34:16,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1524085444, now seen corresponding path program 3 times [2025-03-16 17:34:16,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:34:16,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274950254] [2025-03-16 17:34:16,183 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 17:34:16,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:34:16,198 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 5 equivalence classes. [2025-03-16 17:34:16,215 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 47 of 47 statements. [2025-03-16 17:34:16,215 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-03-16 17:34:16,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:34:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:17,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:34:17,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274950254] [2025-03-16 17:34:17,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274950254] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:34:17,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934307199] [2025-03-16 17:34:17,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 17:34:17,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:34:17,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:34:17,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:34:17,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 17:34:17,388 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 5 equivalence classes. [2025-03-16 17:34:17,742 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 47 of 47 statements. [2025-03-16 17:34:17,742 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-03-16 17:34:17,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:34:17,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 89 conjuncts are in the unsatisfiable core [2025-03-16 17:34:17,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:34:17,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-16 17:34:17,759 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 27 treesize of output 1 [2025-03-16 17:34:17,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-03-16 17:34:17,764 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 15 treesize of output 1 [2025-03-16 17:34:17,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 15 [2025-03-16 17:34:17,801 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 53 treesize of output 26 [2025-03-16 17:34:17,813 INFO L349 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2025-03-16 17:34:17,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 45 [2025-03-16 17:34:17,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2025-03-16 17:34:17,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:34:17,827 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 [2025-03-16 17:34:17,907 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 116 treesize of output 73 [2025-03-16 17:34:17,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:17,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 42 [2025-03-16 17:34:17,933 INFO L349 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2025-03-16 17:34:17,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 45 [2025-03-16 17:34:17,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-03-16 17:34:17,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:17,961 INFO L349 Elim1Store]: treesize reduction 62, result has 38.0 percent of original size [2025-03-16 17:34:17,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 69 [2025-03-16 17:34:17,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:17,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2025-03-16 17:34:17,980 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 [2025-03-16 17:34:18,122 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 [2025-03-16 17:34:18,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 121 [2025-03-16 17:34:18,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:18,154 INFO L349 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2025-03-16 17:34:18,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 68 [2025-03-16 17:34:18,175 INFO L349 Elim1Store]: treesize reduction 53, result has 45.9 percent of original size [2025-03-16 17:34:18,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 53 [2025-03-16 17:34:18,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-03-16 17:34:18,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:18,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:18,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:18,201 INFO L349 Elim1Store]: treesize reduction 4, result has 85.7 percent of original size [2025-03-16 17:34:18,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 37 [2025-03-16 17:34:18,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:18,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:18,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:18,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 52 [2025-03-16 17:34:18,420 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 174 treesize of output 126 [2025-03-16 17:34:18,446 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 [2025-03-16 17:34:18,609 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 50 treesize of output 34 [2025-03-16 17:34:18,625 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 [2025-03-16 17:34:18,739 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 54 treesize of output 38 [2025-03-16 17:34:18,754 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2025-03-16 17:34:18,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 61 [2025-03-16 17:34:18,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-16 17:34:18,767 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 [2025-03-16 17:34:18,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2025-03-16 17:34:18,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-16 17:34:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:18,784 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:34:19,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 17:34:19,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 328 treesize of output 219 [2025-03-16 17:34:19,216 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:19,216 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:19,217 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:19,219 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:19,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 122 [2025-03-16 17:34:19,227 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:19,228 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:19,228 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:19,230 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-16 17:34:19,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2025-03-16 17:34:19,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:19,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:19,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2025-03-16 17:34:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:19,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934307199] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:34:19,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:34:19,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-16 17:34:19,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461876828] [2025-03-16 17:34:19,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:34:19,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-16 17:34:19,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:34:19,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-16 17:34:19,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2025-03-16 17:34:19,353 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:20,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:34:20,009 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2025-03-16 17:34:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-16 17:34:20,010 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 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 47 [2025-03-16 17:34:20,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:34:20,010 INFO L225 Difference]: With dead ends: 65 [2025-03-16 17:34:20,010 INFO L226 Difference]: Without dead ends: 58 [2025-03-16 17:34:20,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2025-03-16 17:34:20,011 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 85 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 17:34:20,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 228 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 17:34:20,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-16 17:34:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2025-03-16 17:34:20,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 56 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:20,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2025-03-16 17:34:20,019 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 47 [2025-03-16 17:34:20,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:34:20,019 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2025-03-16 17:34:20,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:34:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2025-03-16 17:34:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-16 17:34:20,020 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:34:20,020 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2025-03-16 17:34:20,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-16 17:34:20,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-16 17:34:20,221 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:34:20,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:34:20,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704314, now seen corresponding path program 7 times [2025-03-16 17:34:20,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:34:20,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133564193] [2025-03-16 17:34:20,221 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-16 17:34:20,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:34:20,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-16 17:34:20,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-16 17:34:20,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:34:20,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:34:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:21,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:34:21,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133564193] [2025-03-16 17:34:21,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133564193] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:34:21,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589755784] [2025-03-16 17:34:21,294 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-16 17:34:21,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:34:21,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:34:21,295 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 17:34:21,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 17:34:21,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-16 17:34:21,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-16 17:34:21,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:34:21,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:34:21,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-03-16 17:34:21,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:34:21,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:34:21,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-03-16 17:34:21,485 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 [2025-03-16 17:34:21,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2025-03-16 17:34:21,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-03-16 17:34:21,553 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 [2025-03-16 17:34:21,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2025-03-16 17:34:21,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2025-03-16 17:34:21,584 INFO L349 Elim1Store]: treesize reduction 38, result has 36.7 percent of original size [2025-03-16 17:34:21,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 37 [2025-03-16 17:34:21,589 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 74 treesize of output 39 [2025-03-16 17:34:21,679 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 [2025-03-16 17:34:21,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,693 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2025-03-16 17:34:21,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 60 [2025-03-16 17:34:21,697 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 110 treesize of output 63 [2025-03-16 17:34:21,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,709 INFO L349 Elim1Store]: treesize reduction 61, result has 23.8 percent of original size [2025-03-16 17:34:21,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 52 [2025-03-16 17:34:21,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,731 INFO L349 Elim1Store]: treesize reduction 62, result has 38.0 percent of original size [2025-03-16 17:34:21,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 69 [2025-03-16 17:34:21,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,881 INFO L349 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2025-03-16 17:34:21,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 162 treesize of output 86 [2025-03-16 17:34:21,887 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 178 treesize of output 115 [2025-03-16 17:34:21,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,897 INFO L349 Elim1Store]: treesize reduction 4, result has 85.7 percent of original size [2025-03-16 17:34:21,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 37 [2025-03-16 17:34:21,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 17:34:21,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 78 [2025-03-16 17:34:21,917 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 [2025-03-16 17:34:22,058 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 [2025-03-16 17:34:22,062 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 195 treesize of output 143 [2025-03-16 17:34:22,203 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 50 treesize of output 34 [2025-03-16 17:34:22,219 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 [2025-03-16 17:34:22,353 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 54 treesize of output 38 [2025-03-16 17:34:22,374 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 [2025-03-16 17:34:22,544 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 58 treesize of output 42 [2025-03-16 17:34:22,550 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 [2025-03-16 17:34:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:34:22,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:34:24,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 17:34:24,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 1027 treesize of output 748 [2025-03-16 17:34:58,323 WARN L286 SmtUtils]: Spent 33.64s on a formula simplification. DAG size of input: 1722 DAG size of output: 950 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2025-03-16 17:34:58,324 INFO L349 Elim1Store]: treesize reduction 6936, result has 43.4 percent of original size [2025-03-16 17:34:58,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 29 select indices, 29 select index equivalence classes, 0 disjoint index pairs (out of 406 index pairs), introduced 37 new quantified variables, introduced 406 case distinctions, treesize of input 63503095 treesize of output 61629679