./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/transpose-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-multidimensional/transpose-u.c -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 44b06771d393671cf9550617b8bf478abc837489f84f20705c70efc1808f7508 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 09:27:16,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 09:27:16,341 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 09:27:16,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 09:27:16,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 09:27:16,364 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 09:27:16,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 09:27:16,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 09:27:16,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 09:27:16,366 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 09:27:16,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 09:27:16,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 09:27:16,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 09:27:16,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 09:27:16,366 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 09:27:16,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 09:27:16,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 09:27:16,367 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 09:27:16,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:27:16,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 09:27:16,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 09:27:16,368 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 -> 44b06771d393671cf9550617b8bf478abc837489f84f20705c70efc1808f7508 [2025-03-03 09:27:16,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 09:27:16,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 09:27:16,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 09:27:16,582 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 09:27:16,582 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 09:27:16,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/transpose-u.c [2025-03-03 09:27:17,708 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58cc2351f/4ee9157263c94d2cbd64d99d8ac10f34/FLAG59a6d3646 [2025-03-03 09:27:17,960 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 09:27:17,960 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/transpose-u.c [2025-03-03 09:27:17,967 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58cc2351f/4ee9157263c94d2cbd64d99d8ac10f34/FLAG59a6d3646 [2025-03-03 09:27:18,278 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58cc2351f/4ee9157263c94d2cbd64d99d8ac10f34 [2025-03-03 09:27:18,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 09:27:18,281 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 09:27:18,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 09:27:18,282 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 09:27:18,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 09:27:18,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79da9237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18, skipping insertion in model container [2025-03-03 09:27:18,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,295 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 09:27:18,383 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/array-multidimensional/transpose-u.c[315,328] [2025-03-03 09:27:18,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:27:18,406 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 09:27:18,413 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/array-multidimensional/transpose-u.c[315,328] [2025-03-03 09:27:18,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:27:18,434 INFO L204 MainTranslator]: Completed translation [2025-03-03 09:27:18,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18 WrapperNode [2025-03-03 09:27:18,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 09:27:18,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 09:27:18,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 09:27:18,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 09:27:18,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,457 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2025-03-03 09:27:18,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 09:27:18,459 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 09:27:18,459 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 09:27:18,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 09:27:18,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,477 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 2, 3]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-03-03 09:27:18,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,480 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 09:27:18,485 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 09:27:18,485 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 09:27:18,485 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 09:27:18,486 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (1/1) ... [2025-03-03 09:27:18,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:27:18,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:27:18,512 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) [2025-03-03 09:27:18,517 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 [2025-03-03 09:27:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 09:27:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 09:27:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 09:27:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 09:27:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 09:27:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 09:27:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 09:27:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-03 09:27:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 09:27:18,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 09:27:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 09:27:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 09:27:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-03 09:27:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 09:27:18,588 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 09:27:18,590 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 09:27:18,681 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L14: call ULTIMATE.dealloc(main_~#A~0#1.base, main_~#A~0#1.offset);havoc main_~#A~0#1.base, main_~#A~0#1.offset;call ULTIMATE.dealloc(main_~#C~0#1.base, main_~#C~0#1.offset);havoc main_~#C~0#1.base, main_~#C~0#1.offset; [2025-03-03 09:27:18,687 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-03-03 09:27:18,687 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 09:27:18,699 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 09:27:18,700 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 09:27:18,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:27:18 BoogieIcfgContainer [2025-03-03 09:27:18,700 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 09:27:18,702 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 09:27:18,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 09:27:18,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 09:27:18,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:27:18" (1/3) ... [2025-03-03 09:27:18,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b44621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:27:18, skipping insertion in model container [2025-03-03 09:27:18,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:27:18" (2/3) ... [2025-03-03 09:27:18,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b44621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:27:18, skipping insertion in model container [2025-03-03 09:27:18,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:27:18" (3/3) ... [2025-03-03 09:27:18,709 INFO L128 eAbstractionObserver]: Analyzing ICFG transpose-u.c [2025-03-03 09:27:18,721 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 09:27:18,722 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG transpose-u.c that has 1 procedures, 15 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-03 09:27:18,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 09:27:18,767 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;@1d3c48da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 09:27:18,767 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 09:27:18,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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) [2025-03-03 09:27:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-03 09:27:18,775 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:27:18,775 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:27:18,775 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:27:18,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:27:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1471514874, now seen corresponding path program 1 times [2025-03-03 09:27:18,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:27:18,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25209306] [2025-03-03 09:27:18,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:27:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:27:18,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-03 09:27:18,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-03 09:27:18,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:27:18,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:27:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:27:18,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:27:18,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25209306] [2025-03-03 09:27:18,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25209306] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:27:18,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:27:18,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:27:18,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221089067] [2025-03-03 09:27:18,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:27:18,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:27:18,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:27:18,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:27:18,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:27:18,986 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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 3 states, 3 states have (on average 2.6666666666666665) 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) [2025-03-03 09:27:19,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:27:19,030 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2025-03-03 09:27:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:27:19,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 [2025-03-03 09:27:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:27:19,036 INFO L225 Difference]: With dead ends: 28 [2025-03-03 09:27:19,036 INFO L226 Difference]: Without dead ends: 14 [2025-03-03 09:27:19,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:27:19,039 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:27:19,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:27:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-03 09:27:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2025-03-03 09:27:19,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2025-03-03 09:27:19,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2025-03-03 09:27:19,059 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 18 transitions. Word has length 8 [2025-03-03 09:27:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:27:19,059 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 18 transitions. [2025-03-03 09:27:19,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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) [2025-03-03 09:27:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2025-03-03 09:27:19,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-03 09:27:19,059 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:27:19,059 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:27:19,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 09:27:19,060 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:27:19,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:27:19,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1992313640, now seen corresponding path program 1 times [2025-03-03 09:27:19,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:27:19,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453954236] [2025-03-03 09:27:19,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:27:19,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:27:19,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-03 09:27:19,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-03 09:27:19,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:27:19,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:27:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:27:19,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:27:19,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453954236] [2025-03-03 09:27:19,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453954236] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:27:19,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:27:19,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 09:27:19,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134060667] [2025-03-03 09:27:19,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:27:19,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:27:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:27:19,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:27:19,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:27:19,130 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:27:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:27:19,180 INFO L93 Difference]: Finished difference Result 30 states and 43 transitions. [2025-03-03 09:27:19,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:27:19,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-03 09:27:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:27:19,181 INFO L225 Difference]: With dead ends: 30 [2025-03-03 09:27:19,181 INFO L226 Difference]: Without dead ends: 20 [2025-03-03 09:27:19,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:27:19,182 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:27:19,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:27:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-03-03 09:27:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2025-03-03 09:27:19,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2025-03-03 09:27:19,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2025-03-03 09:27:19,185 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 10 [2025-03-03 09:27:19,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:27:19,185 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2025-03-03 09:27:19,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:27:19,185 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2025-03-03 09:27:19,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-03 09:27:19,186 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:27:19,186 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:27:19,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 09:27:19,186 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:27:19,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:27:19,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1113605196, now seen corresponding path program 1 times [2025-03-03 09:27:19,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:27:19,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185840048] [2025-03-03 09:27:19,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:27:19,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:27:19,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-03 09:27:19,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-03 09:27:19,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:27:19,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:27:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:27:19,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:27:19,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185840048] [2025-03-03 09:27:19,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185840048] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:27:19,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:27:19,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 09:27:19,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352825728] [2025-03-03 09:27:19,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:27:19,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:27:19,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:27:19,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:27:19,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:27:19,269 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-03-03 09:27:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:27:19,312 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2025-03-03 09:27:19,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:27:19,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2025-03-03 09:27:19,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:27:19,313 INFO L225 Difference]: With dead ends: 35 [2025-03-03 09:27:19,313 INFO L226 Difference]: Without dead ends: 28 [2025-03-03 09:27:19,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:27:19,313 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:27:19,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 11 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:27:19,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-03 09:27:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 17. [2025-03-03 09:27:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2025-03-03 09:27:19,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2025-03-03 09:27:19,317 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 11 [2025-03-03 09:27:19,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:27:19,317 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2025-03-03 09:27:19,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-03-03 09:27:19,317 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2025-03-03 09:27:19,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-03 09:27:19,318 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:27:19,318 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:27:19,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 09:27:19,318 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:27:19,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:27:19,318 INFO L85 PathProgramCache]: Analyzing trace with hash 475717754, now seen corresponding path program 1 times [2025-03-03 09:27:19,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:27:19,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840809285] [2025-03-03 09:27:19,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:27:19,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:27:19,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-03 09:27:19,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-03 09:27:19,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:27:19,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:27:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:27:19,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:27:19,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840809285] [2025-03-03 09:27:19,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840809285] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:27:19,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723305847] [2025-03-03 09:27:19,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:27:19,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:27:19,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:27:19,420 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) [2025-03-03 09:27:19,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 09:27:19,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-03 09:27:19,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-03 09:27:19,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:27:19,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:27:19,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 09:27:19,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:27:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:27:19,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:27:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:27:19,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723305847] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:27:19,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:27:19,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-03 09:27:19,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865930358] [2025-03-03 09:27:19,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:27:19,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 09:27:19,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:27:19,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 09:27:19,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-03-03 09:27:19,560 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2025-03-03 09:27:19,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:27:19,650 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2025-03-03 09:27:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 09:27:19,650 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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 [2025-03-03 09:27:19,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:27:19,650 INFO L225 Difference]: With dead ends: 52 [2025-03-03 09:27:19,650 INFO L226 Difference]: Without dead ends: 38 [2025-03-03 09:27:19,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2025-03-03 09:27:19,651 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 49 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:27:19,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 24 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:27:19,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-03-03 09:27:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2025-03-03 09:27:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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) [2025-03-03 09:27:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2025-03-03 09:27:19,658 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 14 [2025-03-03 09:27:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:27:19,658 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2025-03-03 09:27:19,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2025-03-03 09:27:19,659 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2025-03-03 09:27:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-03 09:27:19,660 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:27:19,660 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:27:19,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 09:27:19,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:27:19,860 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:27:19,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:27:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1661516742, now seen corresponding path program 2 times [2025-03-03 09:27:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:27:19,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486164023] [2025-03-03 09:27:19,861 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:27:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:27:19,877 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-03 09:27:19,887 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-03 09:27:19,888 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:27:19,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:27:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 09:27:19,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:27:19,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486164023] [2025-03-03 09:27:19,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486164023] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:27:19,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669175164] [2025-03-03 09:27:19,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:27:19,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:27:19,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:27:19,984 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) [2025-03-03 09:27:19,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 09:27:20,029 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-03 09:27:20,055 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-03 09:27:20,055 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:27:20,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:27:20,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 09:27:20,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:27:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 09:27:20,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:27:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 09:27:20,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669175164] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:27:20,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:27:20,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 16 [2025-03-03 09:27:20,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718469209] [2025-03-03 09:27:20,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:27:20,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-03 09:27:20,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:27:20,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-03 09:27:20,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2025-03-03 09:27:20,208 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 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) [2025-03-03 09:27:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:27:20,851 INFO L93 Difference]: Finished difference Result 259 states and 334 transitions. [2025-03-03 09:27:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-03 09:27:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 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 20 [2025-03-03 09:27:20,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:27:20,853 INFO L225 Difference]: With dead ends: 259 [2025-03-03 09:27:20,853 INFO L226 Difference]: Without dead ends: 230 [2025-03-03 09:27:20,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=629, Invalid=1093, Unknown=0, NotChecked=0, Total=1722 [2025-03-03 09:27:20,854 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 826 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:27:20,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 41 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:27:20,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-03-03 09:27:20,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 86. [2025-03-03 09:27:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2) internal successors, (102), 85 states have internal predecessors, (102), 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) [2025-03-03 09:27:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2025-03-03 09:27:20,873 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 20 [2025-03-03 09:27:20,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:27:20,873 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2025-03-03 09:27:20,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 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) [2025-03-03 09:27:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2025-03-03 09:27:20,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-03 09:27:20,875 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:27:20,875 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:27:20,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 09:27:21,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:27:21,076 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:27:21,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:27:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash -766663814, now seen corresponding path program 3 times [2025-03-03 09:27:21,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:27:21,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434882559] [2025-03-03 09:27:21,077 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:27:21,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:27:21,108 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 13 equivalence classes. [2025-03-03 09:27:21,226 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 56 of 56 statements. [2025-03-03 09:27:21,227 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-03 09:27:21,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:27:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2025-03-03 09:27:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:27:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434882559] [2025-03-03 09:27:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434882559] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:27:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91093354] [2025-03-03 09:27:21,529 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:27:21,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:27:21,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:27:21,531 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) [2025-03-03 09:27:21,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 09:27:21,607 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 13 equivalence classes. [2025-03-03 09:27:52,918 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 52 of 56 statements. [2025-03-03 09:27:52,918 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-03-03 09:27:52,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:27:52,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 92 conjuncts are in the unsatisfiable core [2025-03-03 09:27:52,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:27:53,099 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 [2025-03-03 09:27:53,157 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 11 [2025-03-03 09:27:53,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,193 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 31 treesize of output 30 [2025-03-03 09:27:53,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 09:27:53,279 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 46 treesize of output 48 [2025-03-03 09:27:53,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 09:27:53,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 66 [2025-03-03 09:27:53,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 09:27:53,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 84 [2025-03-03 09:27:53,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 09:27:53,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 102 [2025-03-03 09:27:53,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:53,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 09:27:53,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 106 treesize of output 120 [2025-03-03 09:27:54,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:54,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 09:27:54,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 121 treesize of output 138 [2025-03-03 09:27:59,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:27:59,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 09:27:59,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 136 treesize of output 156 [2025-03-03 09:28:20,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-03 09:28:20,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 09:28:20,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 151 treesize of output 174 [2025-03-03 09:28:31,294 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2025-03-03 09:28:31,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2025-03-03 09:28:31,296 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2025-03-03 09:28:31,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 09:28:31,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:31,497 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:947) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2025-03-03 09:28:31,501 INFO L158 Benchmark]: Toolchain (without parser) took 73219.93ms. Allocated memory was 167.8MB in the beginning and 369.1MB in the end (delta: 201.3MB). Free memory was 122.6MB in the beginning and 188.6MB in the end (delta: -65.9MB). Peak memory consumption was 137.3MB. Max. memory is 16.1GB. [2025-03-03 09:28:31,501 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 201.3MB. Free memory is still 116.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 09:28:31,502 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.93ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 110.9MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 09:28:31,502 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.73ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 110.1MB in the end (delta: 780.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 09:28:31,502 INFO L158 Benchmark]: Boogie Preprocessor took 25.56ms. Allocated memory is still 167.8MB. Free memory was 110.1MB in the beginning and 108.8MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 09:28:31,502 INFO L158 Benchmark]: IcfgBuilder took 215.43ms. Allocated memory is still 167.8MB. Free memory was 108.8MB in the beginning and 95.5MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 09:28:31,503 INFO L158 Benchmark]: TraceAbstraction took 72798.52ms. Allocated memory was 167.8MB in the beginning and 369.1MB in the end (delta: 201.3MB). Free memory was 95.5MB in the beginning and 188.6MB in the end (delta: -93.1MB). Peak memory consumption was 112.2MB. Max. memory is 16.1GB. [2025-03-03 09:28:31,503 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 201.3MB. Free memory is still 116.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 152.93ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 110.9MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.73ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 110.1MB in the end (delta: 780.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.56ms. Allocated memory is still 167.8MB. Free memory was 110.1MB in the beginning and 108.8MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 215.43ms. Allocated memory is still 167.8MB. Free memory was 108.8MB in the beginning and 95.5MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 72798.52ms. Allocated memory was 167.8MB in the beginning and 369.1MB in the end (delta: 201.3MB). Free memory was 95.5MB in the beginning and 188.6MB in the end (delta: -93.1MB). Peak memory consumption was 112.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/array-multidimensional/transpose-u.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 44b06771d393671cf9550617b8bf478abc837489f84f20705c70efc1808f7508 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 09:28:33,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 09:28:33,098 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-03 09:28:33,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 09:28:33,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 09:28:33,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 09:28:33,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 09:28:33,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 09:28:33,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 09:28:33,121 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 09:28:33,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 09:28:33,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 09:28:33,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 09:28:33,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 09:28:33,122 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 09:28:33,122 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 09:28:33,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 09:28:33,123 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 09:28:33,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:28:33,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 09:28:33,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 09:28:33,124 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 09:28:33,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 09:28:33,124 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-03 09:28:33,124 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-03 09:28:33,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 09:28:33,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 09:28:33,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 09:28:33,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 09:28:33,124 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 -> 44b06771d393671cf9550617b8bf478abc837489f84f20705c70efc1808f7508 [2025-03-03 09:28:33,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 09:28:33,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 09:28:33,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 09:28:33,359 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 09:28:33,359 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 09:28:33,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/transpose-u.c [2025-03-03 09:28:34,503 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c92f58a/4551e71888a44cdc8436d1904ec8b26b/FLAG26b55af30 [2025-03-03 09:28:34,670 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 09:28:34,671 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/transpose-u.c [2025-03-03 09:28:34,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c92f58a/4551e71888a44cdc8436d1904ec8b26b/FLAG26b55af30 [2025-03-03 09:28:35,065 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c92f58a/4551e71888a44cdc8436d1904ec8b26b [2025-03-03 09:28:35,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 09:28:35,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 09:28:35,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 09:28:35,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 09:28:35,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 09:28:35,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fca5884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35, skipping insertion in model container [2025-03-03 09:28:35,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,087 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 09:28:35,186 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/array-multidimensional/transpose-u.c[315,328] [2025-03-03 09:28:35,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:28:35,213 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 09:28:35,221 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/array-multidimensional/transpose-u.c[315,328] [2025-03-03 09:28:35,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:28:35,244 INFO L204 MainTranslator]: Completed translation [2025-03-03 09:28:35,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35 WrapperNode [2025-03-03 09:28:35,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 09:28:35,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 09:28:35,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 09:28:35,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 09:28:35,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,272 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2025-03-03 09:28:35,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 09:28:35,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 09:28:35,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 09:28:35,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 09:28:35,279 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,283 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,293 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 2, 3]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-03-03 09:28:35,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,302 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 09:28:35,309 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 09:28:35,309 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 09:28:35,309 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 09:28:35,310 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (1/1) ... [2025-03-03 09:28:35,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:28:35,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:28:35,331 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) [2025-03-03 09:28:35,333 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 [2025-03-03 09:28:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 09:28:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-03 09:28:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-03 09:28:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-03 09:28:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 09:28:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-03 09:28:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-03 09:28:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-03 09:28:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 09:28:35,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 09:28:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 09:28:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-03 09:28:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-03 09:28:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-03 09:28:35,418 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 09:28:35,420 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 09:28:35,610 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L14: call ULTIMATE.dealloc(main_~#A~0#1.base, main_~#A~0#1.offset);havoc main_~#A~0#1.base, main_~#A~0#1.offset;call ULTIMATE.dealloc(main_~#C~0#1.base, main_~#C~0#1.offset);havoc main_~#C~0#1.base, main_~#C~0#1.offset; [2025-03-03 09:28:35,616 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-03-03 09:28:35,618 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 09:28:35,624 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 09:28:35,626 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 09:28:35,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:28:35 BoogieIcfgContainer [2025-03-03 09:28:35,626 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 09:28:35,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 09:28:35,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 09:28:35,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 09:28:35,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:28:35" (1/3) ... [2025-03-03 09:28:35,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6435a920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:28:35, skipping insertion in model container [2025-03-03 09:28:35,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:28:35" (2/3) ... [2025-03-03 09:28:35,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6435a920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:28:35, skipping insertion in model container [2025-03-03 09:28:35,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:28:35" (3/3) ... [2025-03-03 09:28:35,634 INFO L128 eAbstractionObserver]: Analyzing ICFG transpose-u.c [2025-03-03 09:28:35,643 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 09:28:35,644 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG transpose-u.c that has 1 procedures, 15 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-03 09:28:35,672 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 09:28:35,679 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;@5bfabb77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 09:28:35,679 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 09:28:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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) [2025-03-03 09:28:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-03 09:28:35,686 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:28:35,686 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:28:35,686 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:28:35,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:28:35,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1471514874, now seen corresponding path program 1 times [2025-03-03 09:28:35,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 09:28:35,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248646688] [2025-03-03 09:28:35,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:28:35,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:35,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:28:35,703 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) [2025-03-03 09:28:35,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 09:28:35,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-03 09:28:35,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-03 09:28:35,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:28:35,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:28:35,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 09:28:35,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:28:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:28:35,852 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:28:35,853 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 09:28:35,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248646688] [2025-03-03 09:28:35,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248646688] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:28:35,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:28:35,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:28:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850562320] [2025-03-03 09:28:35,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:28:35,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:28:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 09:28:35,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:28:35,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:28:35,870 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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 3 states, 3 states have (on average 2.6666666666666665) 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) [2025-03-03 09:28:35,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:28:35,946 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2025-03-03 09:28:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:28:35,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 [2025-03-03 09:28:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:28:35,956 INFO L225 Difference]: With dead ends: 28 [2025-03-03 09:28:35,957 INFO L226 Difference]: Without dead ends: 14 [2025-03-03 09:28:35,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:28:35,962 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:28:35,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:28:35,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-03 09:28:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2025-03-03 09:28:35,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2025-03-03 09:28:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2025-03-03 09:28:35,984 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 18 transitions. Word has length 8 [2025-03-03 09:28:35,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:28:35,984 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 18 transitions. [2025-03-03 09:28:35,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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) [2025-03-03 09:28:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2025-03-03 09:28:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-03 09:28:35,985 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:28:35,985 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:28:35,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 09:28:36,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:36,186 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:28:36,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:28:36,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1992313640, now seen corresponding path program 1 times [2025-03-03 09:28:36,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 09:28:36,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071516605] [2025-03-03 09:28:36,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:28:36,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:36,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:28:36,189 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) [2025-03-03 09:28:36,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 09:28:36,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-03 09:28:36,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-03 09:28:36,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:28:36,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:28:36,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 09:28:36,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:28:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:28:36,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:28:36,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 09:28:36,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071516605] [2025-03-03 09:28:36,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071516605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:28:36,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:28:36,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 09:28:36,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582787463] [2025-03-03 09:28:36,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:28:36,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:28:36,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 09:28:36,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:28:36,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:28:36,277 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:28:36,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:28:36,370 INFO L93 Difference]: Finished difference Result 30 states and 43 transitions. [2025-03-03 09:28:36,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:28:36,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-03 09:28:36,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:28:36,373 INFO L225 Difference]: With dead ends: 30 [2025-03-03 09:28:36,373 INFO L226 Difference]: Without dead ends: 20 [2025-03-03 09:28:36,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:28:36,374 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:28:36,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 10 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:28:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-03-03 09:28:36,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2025-03-03 09:28:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2025-03-03 09:28:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2025-03-03 09:28:36,378 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 10 [2025-03-03 09:28:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:28:36,378 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2025-03-03 09:28:36,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:28:36,378 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2025-03-03 09:28:36,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-03 09:28:36,378 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:28:36,379 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:28:36,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 09:28:36,580 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 [2025-03-03 09:28:36,580 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:28:36,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:28:36,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1113605196, now seen corresponding path program 1 times [2025-03-03 09:28:36,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 09:28:36,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189249048] [2025-03-03 09:28:36,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:28:36,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:36,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:28:36,583 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) [2025-03-03 09:28:36,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 09:28:36,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-03 09:28:36,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-03 09:28:36,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:28:36,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:28:36,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 09:28:36,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:28:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:28:36,675 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:28:36,675 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 09:28:36,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189249048] [2025-03-03 09:28:36,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189249048] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:28:36,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:28:36,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 09:28:36,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972932690] [2025-03-03 09:28:36,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:28:36,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:28:36,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 09:28:36,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:28:36,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:28:36,676 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-03-03 09:28:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:28:36,781 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2025-03-03 09:28:36,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:28:36,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2025-03-03 09:28:36,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:28:36,784 INFO L225 Difference]: With dead ends: 35 [2025-03-03 09:28:36,784 INFO L226 Difference]: Without dead ends: 28 [2025-03-03 09:28:36,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:28:36,785 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:28:36,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 11 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:28:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-03 09:28:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 17. [2025-03-03 09:28:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2025-03-03 09:28:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2025-03-03 09:28:36,789 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 11 [2025-03-03 09:28:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:28:36,789 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2025-03-03 09:28:36,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-03-03 09:28:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2025-03-03 09:28:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-03 09:28:36,790 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:28:36,790 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:28:36,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 09:28:36,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:36,994 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:28:36,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:28:36,994 INFO L85 PathProgramCache]: Analyzing trace with hash 475717754, now seen corresponding path program 1 times [2025-03-03 09:28:36,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 09:28:36,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665968859] [2025-03-03 09:28:36,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:28:36,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:36,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:28:36,997 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) [2025-03-03 09:28:36,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 09:28:37,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-03 09:28:37,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-03 09:28:37,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:28:37,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:28:37,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 09:28:37,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:28:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:28:37,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:28:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:28:37,156 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 09:28:37,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665968859] [2025-03-03 09:28:37,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665968859] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:28:37,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 09:28:37,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-03 09:28:37,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868614042] [2025-03-03 09:28:37,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 09:28:37,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 09:28:37,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 09:28:37,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 09:28:37,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-03 09:28:37,157 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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) [2025-03-03 09:28:37,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:28:37,409 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2025-03-03 09:28:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 09:28:37,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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) Word has length 14 [2025-03-03 09:28:37,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:28:37,412 INFO L225 Difference]: With dead ends: 52 [2025-03-03 09:28:37,412 INFO L226 Difference]: Without dead ends: 38 [2025-03-03 09:28:37,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2025-03-03 09:28:37,412 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 84 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 09:28:37,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 21 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 09:28:37,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-03-03 09:28:37,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2025-03-03 09:28:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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) [2025-03-03 09:28:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2025-03-03 09:28:37,418 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 14 [2025-03-03 09:28:37,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:28:37,418 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2025-03-03 09:28:37,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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) [2025-03-03 09:28:37,418 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2025-03-03 09:28:37,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-03 09:28:37,418 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:28:37,419 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:28:37,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 09:28:37,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:37,619 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:28:37,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:28:37,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1661516742, now seen corresponding path program 2 times [2025-03-03 09:28:37,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 09:28:37,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592155032] [2025-03-03 09:28:37,620 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:28:37,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:37,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:28:37,622 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) [2025-03-03 09:28:37,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 09:28:37,663 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-03 09:28:37,729 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-03 09:28:37,729 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:28:37,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:28:37,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 09:28:37,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:28:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 09:28:37,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:28:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 09:28:37,830 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 09:28:37,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592155032] [2025-03-03 09:28:37,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592155032] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:28:37,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 09:28:37,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2025-03-03 09:28:37,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834176519] [2025-03-03 09:28:37,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 09:28:37,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 09:28:37,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 09:28:37,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 09:28:37,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:28:37,834 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2025-03-03 09:28:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:28:37,970 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2025-03-03 09:28:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 09:28:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 20 [2025-03-03 09:28:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:28:37,972 INFO L225 Difference]: With dead ends: 73 [2025-03-03 09:28:37,972 INFO L226 Difference]: Without dead ends: 50 [2025-03-03 09:28:37,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:28:37,973 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:28:37,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 16 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:28:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-03-03 09:28:37,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-03-03 09:28:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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) [2025-03-03 09:28:37,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2025-03-03 09:28:37,985 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 20 [2025-03-03 09:28:37,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:28:37,985 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2025-03-03 09:28:37,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2025-03-03 09:28:37,986 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2025-03-03 09:28:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-03 09:28:37,986 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:28:37,986 INFO L218 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:28:37,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 09:28:38,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:38,187 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:28:38,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:28:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash -845042604, now seen corresponding path program 3 times [2025-03-03 09:28:38,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 09:28:38,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379474533] [2025-03-03 09:28:38,188 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:28:38,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:38,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:28:38,189 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) [2025-03-03 09:28:38,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 09:28:38,250 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 13 equivalence classes. [2025-03-03 09:28:38,274 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 12 of 38 statements. [2025-03-03 09:28:38,274 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-03 09:28:38,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:28:38,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 09:28:38,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:28:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-03-03 09:28:38,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:28:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-03-03 09:28:38,447 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 09:28:38,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379474533] [2025-03-03 09:28:38,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379474533] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:28:38,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 09:28:38,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-03 09:28:38,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107234034] [2025-03-03 09:28:38,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 09:28:38,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 09:28:38,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 09:28:38,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 09:28:38,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-03 09:28:38,448 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2025-03-03 09:28:38,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:28:38,636 INFO L93 Difference]: Finished difference Result 133 states and 166 transitions. [2025-03-03 09:28:38,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 09:28:38,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 38 [2025-03-03 09:28:38,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:28:38,637 INFO L225 Difference]: With dead ends: 133 [2025-03-03 09:28:38,638 INFO L226 Difference]: Without dead ends: 117 [2025-03-03 09:28:38,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2025-03-03 09:28:38,638 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 141 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 09:28:38,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 25 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 09:28:38,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-03 09:28:38,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 68. [2025-03-03 09:28:38,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 67 states have internal predecessors, (82), 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) [2025-03-03 09:28:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2025-03-03 09:28:38,653 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 38 [2025-03-03 09:28:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:28:38,653 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2025-03-03 09:28:38,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2025-03-03 09:28:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2025-03-03 09:28:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-03 09:28:38,654 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:28:38,654 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:28:38,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 09:28:38,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:38,858 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:28:38,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:28:38,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1216948218, now seen corresponding path program 4 times [2025-03-03 09:28:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 09:28:38,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047333417] [2025-03-03 09:28:38,862 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:28:38,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:28:38,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:28:38,864 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) [2025-03-03 09:28:38,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 09:28:38,924 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes.