./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-8fc3dc6-m [2025-03-16 13:46:08,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 13:46:08,846 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 13:46:08,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 13:46:08,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 13:46:08,871 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 13:46:08,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 13:46:08,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 13:46:08,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 13:46:08,873 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 13:46:08,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 13:46:08,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 13:46:08,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 13:46:08,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 13:46:08,874 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 13:46:08,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 13:46:08,875 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 13:46:08,875 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 13:46:08,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 13:46:08,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 13:46:08,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 13:46:08,875 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 13:46:08,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 13:46:08,875 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 13:46:08,875 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 13:46:08,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 13:46:08,876 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 13:46:08,876 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 13:46:08,876 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 13:46:08,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 13:46:08,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 13:46:08,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 13:46:08,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 13:46:08,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 13:46:08,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 13:46:08,877 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 13:46:08,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 13:46:08,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 13:46:08,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 13:46:08,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 13:46:08,877 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 13:46:08,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 13:46:08,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 13:46:08,877 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 [2025-03-16 13:46:09,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 13:46:09,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 13:46:09,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 13:46:09,099 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 13:46:09,100 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 13:46:09,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/transpose-u.c [2025-03-16 13:46:10,211 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91e48e920/1de3289f59cf4f26bc1ea97433329590/FLAG74b8968e4 [2025-03-16 13:46:10,425 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 13:46:10,426 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/transpose-u.c [2025-03-16 13:46:10,431 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91e48e920/1de3289f59cf4f26bc1ea97433329590/FLAG74b8968e4 [2025-03-16 13:46:10,441 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91e48e920/1de3289f59cf4f26bc1ea97433329590 [2025-03-16 13:46:10,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 13:46:10,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 13:46:10,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 13:46:10,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 13:46:10,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 13:46:10,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb7a7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10, skipping insertion in model container [2025-03-16 13:46:10,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,461 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 13:46:10,554 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] [2025-03-16 13:46:10,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 13:46:10,575 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 13:46:10,581 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] [2025-03-16 13:46:10,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 13:46:10,599 INFO L204 MainTranslator]: Completed translation [2025-03-16 13:46:10,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10 WrapperNode [2025-03-16 13:46:10,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 13:46:10,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 13:46:10,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 13:46:10,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 13:46:10,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,622 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2025-03-16 13:46:10,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 13:46:10,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 13:46:10,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 13:46:10,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 13:46:10,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,648 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]. [2025-03-16 13:46:10,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,654 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 13:46:10,660 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 13:46:10,660 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 13:46:10,660 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 13:46:10,661 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (1/1) ... [2025-03-16 13:46:10,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 13:46:10,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:46:10,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 13:46:10,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 13:46:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 13:46:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 13:46:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 13:46:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 13:46:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 13:46:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-16 13:46:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-16 13:46:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-16 13:46:10,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 13:46:10,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 13:46:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 13:46:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 13:46:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-16 13:46:10,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 13:46:10,764 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 13:46:10,765 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 13:46:10,883 INFO L1322 $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; [2025-03-16 13:46:10,895 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-03-16 13:46:10,895 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 13:46:10,902 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 13:46:10,902 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 13:46:10,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 01:46:10 BoogieIcfgContainer [2025-03-16 13:46:10,904 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 13:46:10,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 13:46:10,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 13:46:10,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 13:46:10,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 01:46:10" (1/3) ... [2025-03-16 13:46:10,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549ca50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:46:10, skipping insertion in model container [2025-03-16 13:46:10,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:46:10" (2/3) ... [2025-03-16 13:46:10,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549ca50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:46:10, skipping insertion in model container [2025-03-16 13:46:10,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 01:46:10" (3/3) ... [2025-03-16 13:46:10,910 INFO L128 eAbstractionObserver]: Analyzing ICFG transpose-u.c [2025-03-16 13:46:10,920 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 13:46:10,921 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG transpose-u.c that has 1 procedures, 14 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-16 13:46:10,960 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 13:46:10,968 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;@529fc2f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 13:46:10,968 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 13:46:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-16 13:46:10,976 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:46:10,977 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:46:10,977 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:46:10,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:46:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1512466291, now seen corresponding path program 1 times [2025-03-16 13:46:10,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:46:10,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952975689] [2025-03-16 13:46:10,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:46:10,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:46:11,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 13:46:11,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 13:46:11,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:46:11,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:46:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 13:46:11,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:46:11,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952975689] [2025-03-16 13:46:11,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952975689] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:46:11,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:46:11,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 13:46:11,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323903335] [2025-03-16 13:46:11,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:46:11,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 13:46:11,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:46:11,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 13:46:11,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 13:46:11,194 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:46:11,234 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2025-03-16 13:46:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 13:46:11,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-16 13:46:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:46:11,242 INFO L225 Difference]: With dead ends: 27 [2025-03-16 13:46:11,242 INFO L226 Difference]: Without dead ends: 13 [2025-03-16 13:46:11,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 13:46:11,249 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 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 [2025-03-16 13:46:11,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:46:11,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-03-16 13:46:11,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2025-03-16 13:46:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2025-03-16 13:46:11,273 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 17 transitions. Word has length 7 [2025-03-16 13:46:11,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:46:11,273 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 17 transitions. [2025-03-16 13:46:11,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 17 transitions. [2025-03-16 13:46:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-16 13:46:11,274 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:46:11,274 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:46:11,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 13:46:11,274 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:46:11,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:46:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash -560059477, now seen corresponding path program 1 times [2025-03-16 13:46:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:46:11,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007414011] [2025-03-16 13:46:11,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:46:11,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:46:11,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-16 13:46:11,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-16 13:46:11,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:46:11,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:46:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 13:46:11,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:46:11,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007414011] [2025-03-16 13:46:11,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007414011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:46:11,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:46:11,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 13:46:11,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515605587] [2025-03-16 13:46:11,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:46:11,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 13:46:11,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:46:11,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 13:46:11,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 13:46:11,361 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:11,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:46:11,417 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2025-03-16 13:46:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 13:46:11,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-16 13:46:11,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:46:11,419 INFO L225 Difference]: With dead ends: 29 [2025-03-16 13:46:11,419 INFO L226 Difference]: Without dead ends: 19 [2025-03-16 13:46:11,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 13:46:11,420 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 7 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 [2025-03-16 13:46:11,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 7 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:46:11,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-03-16 13:46:11,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2025-03-16 13:46:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2025-03-16 13:46:11,423 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 9 [2025-03-16 13:46:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:46:11,423 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2025-03-16 13:46:11,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:11,423 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2025-03-16 13:46:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 13:46:11,423 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:46:11,423 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:46:11,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 13:46:11,424 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:46:11,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:46:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1731156007, now seen corresponding path program 1 times [2025-03-16 13:46:11,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:46:11,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730757633] [2025-03-16 13:46:11,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:46:11,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:46:11,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 13:46:11,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 13:46:11,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:46:11,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:46:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 13:46:11,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:46:11,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730757633] [2025-03-16 13:46:11,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730757633] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:46:11,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:46:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 13:46:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131599555] [2025-03-16 13:46:11,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:46:11,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 13:46:11,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:46:11,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 13:46:11,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 13:46:11,514 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2025-03-16 13:46:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:46:11,554 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2025-03-16 13:46:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 13:46:11,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 [2025-03-16 13:46:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:46:11,555 INFO L225 Difference]: With dead ends: 34 [2025-03-16 13:46:11,555 INFO L226 Difference]: Without dead ends: 27 [2025-03-16 13:46:11,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 13:46:11,556 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 9 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 [2025-03-16 13:46:11,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 9 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:46:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-03-16 13:46:11,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2025-03-16 13:46:11,559 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) [2025-03-16 13:46:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2025-03-16 13:46:11,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 10 [2025-03-16 13:46:11,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:46:11,560 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2025-03-16 13:46:11,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2025-03-16 13:46:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2025-03-16 13:46:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-16 13:46:11,561 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:46:11,561 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:46:11,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 13:46:11,562 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:46:11,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:46:11,562 INFO L85 PathProgramCache]: Analyzing trace with hash 489403853, now seen corresponding path program 1 times [2025-03-16 13:46:11,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:46:11,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561155846] [2025-03-16 13:46:11,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:46:11,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:46:11,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-16 13:46:11,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-16 13:46:11,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:46:11,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:46:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 13:46:11,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:46:11,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561155846] [2025-03-16 13:46:11,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561155846] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:46:11,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501485761] [2025-03-16 13:46:11,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:46:11,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:46:11,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:46:11,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:46:11,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 13:46:11,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-16 13:46:11,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-16 13:46:11,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:46:11,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:46:11,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 13:46:11,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:46:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 13:46:11,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:46:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 13:46:11,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501485761] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:46:11,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:46:11,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-16 13:46:11,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213179624] [2025-03-16 13:46:11,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:46:11,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 13:46:11,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:46:11,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 13:46:11,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-03-16 13:46:11,821 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:46:11,923 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2025-03-16 13:46:11,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 13:46:11,923 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 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 13 [2025-03-16 13:46:11,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:46:11,924 INFO L225 Difference]: With dead ends: 51 [2025-03-16 13:46:11,924 INFO L226 Difference]: Without dead ends: 37 [2025-03-16 13:46:11,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2025-03-16 13:46:11,925 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 13:46:11,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 16 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:46:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-16 13:46:11,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-03-16 13:46:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2025-03-16 13:46:11,929 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 13 [2025-03-16 13:46:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:46:11,930 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2025-03-16 13:46:11,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2025-03-16 13:46:11,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-16 13:46:11,930 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:46:11,930 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:46:11,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 13:46:12,135 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 [2025-03-16 13:46:12,135 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:46:12,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:46:12,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2008649549, now seen corresponding path program 2 times [2025-03-16 13:46:12,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:46:12,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207932038] [2025-03-16 13:46:12,136 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:46:12,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:46:12,152 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-16 13:46:12,167 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-16 13:46:12,167 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:46:12,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:46:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 13:46:12,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:46:12,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207932038] [2025-03-16 13:46:12,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207932038] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:46:12,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432972946] [2025-03-16 13:46:12,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:46:12,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:46:12,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:46:12,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:46:12,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 13:46:12,281 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-16 13:46:12,307 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-16 13:46:12,307 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:46:12,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:46:12,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 13:46:12,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:46:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 13:46:12,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:46:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-16 13:46:12,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432972946] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:46:12,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:46:12,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2025-03-16 13:46:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46740939] [2025-03-16 13:46:12,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:46:12,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-16 13:46:12,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:46:12,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-16 13:46:12,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2025-03-16 13:46:12,461 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:13,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:46:13,023 INFO L93 Difference]: Finished difference Result 258 states and 333 transitions. [2025-03-16 13:46:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-16 13:46:13,023 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-16 13:46:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:46:13,025 INFO L225 Difference]: With dead ends: 258 [2025-03-16 13:46:13,026 INFO L226 Difference]: Without dead ends: 229 [2025-03-16 13:46:13,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=629, Invalid=1093, Unknown=0, NotChecked=0, Total=1722 [2025-03-16 13:46:13,028 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 459 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 13:46:13,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 37 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 13:46:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-03-16 13:46:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 85. [2025-03-16 13:46:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 84 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2025-03-16 13:46:13,047 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 19 [2025-03-16 13:46:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:46:13,047 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2025-03-16 13:46:13,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:46:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2025-03-16 13:46:13,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-16 13:46:13,048 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:46:13,048 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:46:13,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 13:46:13,249 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 [2025-03-16 13:46:13,249 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:46:13,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:46:13,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1803869939, now seen corresponding path program 3 times [2025-03-16 13:46:13,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:46:13,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151730817] [2025-03-16 13:46:13,250 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:46:13,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:46:13,274 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 13 equivalence classes. [2025-03-16 13:46:13,389 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 55 of 55 statements. [2025-03-16 13:46:13,390 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-16 13:46:13,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:46:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2025-03-16 13:46:13,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:46:13,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151730817] [2025-03-16 13:46:13,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151730817] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:46:13,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028776609] [2025-03-16 13:46:13,741 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:46:13,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:46:13,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:46:13,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:46:13,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 13:46:13,808 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 55 statements into 13 equivalence classes. [2025-03-16 13:46:33,021 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 51 of 55 statements. [2025-03-16 13:46:33,021 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-03-16 13:46:33,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:46:33,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 88 conjuncts are in the unsatisfiable core [2025-03-16 13:46:33,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:46:33,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2025-03-16 13:46:33,271 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 [2025-03-16 13:46:33,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,315 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 [2025-03-16 13:46:33,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 13:46:33,401 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 [2025-03-16 13:46:33,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 13:46:33,504 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 [2025-03-16 13:46:33,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 13:46:33,636 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 [2025-03-16 13:46:33,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 13:46:33,804 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 [2025-03-16 13:46:33,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:33,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 13:46:33,983 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 [2025-03-16 13:46:34,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:34,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 13:46:34,485 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 [2025-03-16 13:46:40,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:46:40,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 13:46:40,191 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 [2025-03-16 13:47:00,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-16 13:47:00,420 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 13:47:00,421 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 [2025-03-16 13:47:11,516 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 [2025-03-16 13:47:11,517 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") [2025-03-16 13:47:11,518 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2025-03-16 13:47:11,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 13:47:11,719 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 [2025-03-16 13:47:11,719 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 [2025-03-16 13:47:11,723 INFO L158 Benchmark]: Toolchain (without parser) took 61279.47ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 77.7MB in the end (delta: 44.6MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2025-03-16 13:47:11,723 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 118.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 13:47:11,723 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.13ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 110.9MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 13:47:11,724 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.57ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 110.0MB in the end (delta: 951.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 13:47:11,725 INFO L158 Benchmark]: Boogie Preprocessor took 35.71ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 108.6MB in the end (delta: 901.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 13:47:11,725 INFO L158 Benchmark]: IcfgBuilder took 243.21ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 95.6MB in the end (delta: 12.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-16 13:47:11,725 INFO L158 Benchmark]: TraceAbstraction took 60817.50ms. Allocated memory is still 167.8MB. Free memory was 94.7MB in the beginning and 77.7MB in the end (delta: 17.0MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2025-03-16 13:47:11,726 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 118.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.13ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 110.9MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.57ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 110.0MB in the end (delta: 951.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.71ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 108.6MB in the end (delta: 901.6kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 243.21ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 95.6MB in the end (delta: 12.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 60817.50ms. Allocated memory is still 167.8MB. Free memory was 94.7MB in the beginning and 77.7MB in the end (delta: 17.0MB). Peak memory consumption was 17.9MB. 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-?-8fc3dc6-m [2025-03-16 13:47:13,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 13:47:13,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-16 13:47:13,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 13:47:13,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 13:47:13,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 13:47:13,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 13:47:13,329 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 13:47:13,329 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 13:47:13,329 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 13:47:13,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 13:47:13,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 13:47:13,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 13:47:13,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 13:47:13,329 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 13:47:13,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 13:47:13,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 13:47:13,330 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 13:47:13,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 13:47:13,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 13:47:13,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 13:47:13,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 13:47:13,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 13:47:13,343 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 13:47:13,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 13:47:13,343 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-16 13:47:13,343 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-16 13:47:13,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 13:47:13,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 13:47:13,343 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 13:47:13,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 13:47:13,344 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 [2025-03-16 13:47:13,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 13:47:13,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 13:47:13,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 13:47:13,555 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 13:47:13,555 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 13:47:13,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/transpose-u.c [2025-03-16 13:47:14,725 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd0ecc58f/45aadea423114bcf89ca892742a22995/FLAG9bbcb0e41 [2025-03-16 13:47:14,928 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 13:47:14,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/transpose-u.c [2025-03-16 13:47:14,935 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd0ecc58f/45aadea423114bcf89ca892742a22995/FLAG9bbcb0e41 [2025-03-16 13:47:14,949 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd0ecc58f/45aadea423114bcf89ca892742a22995 [2025-03-16 13:47:14,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 13:47:14,954 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 13:47:14,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 13:47:14,955 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 13:47:14,959 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 13:47:14,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:47:14" (1/1) ... [2025-03-16 13:47:14,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3458d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:14, skipping insertion in model container [2025-03-16 13:47:14,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:47:14" (1/1) ... [2025-03-16 13:47:14,972 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 13:47:15,081 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] [2025-03-16 13:47:15,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 13:47:15,108 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 13:47:15,115 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] [2025-03-16 13:47:15,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 13:47:15,141 INFO L204 MainTranslator]: Completed translation [2025-03-16 13:47:15,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15 WrapperNode [2025-03-16 13:47:15,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 13:47:15,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 13:47:15,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 13:47:15,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 13:47:15,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,163 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2025-03-16 13:47:15,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 13:47:15,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 13:47:15,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 13:47:15,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 13:47:15,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,174 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,186 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]. [2025-03-16 13:47:15,187 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,187 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,195 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,201 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 13:47:15,201 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 13:47:15,201 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 13:47:15,202 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 13:47:15,202 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (1/1) ... [2025-03-16 13:47:15,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 13:47:15,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:47:15,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 13:47:15,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 13:47:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 13:47:15,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-16 13:47:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-16 13:47:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-16 13:47:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 13:47:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-16 13:47:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-16 13:47:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-16 13:47:15,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 13:47:15,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 13:47:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 13:47:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-16 13:47:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-16 13:47:15,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-16 13:47:15,318 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 13:47:15,319 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 13:47:15,518 INFO L1322 $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; [2025-03-16 13:47:15,525 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-03-16 13:47:15,525 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 13:47:15,531 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 13:47:15,531 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 13:47:15,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 01:47:15 BoogieIcfgContainer [2025-03-16 13:47:15,531 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 13:47:15,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 13:47:15,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 13:47:15,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 13:47:15,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 01:47:14" (1/3) ... [2025-03-16 13:47:15,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a56a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:47:15, skipping insertion in model container [2025-03-16 13:47:15,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:47:15" (2/3) ... [2025-03-16 13:47:15,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a56a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:47:15, skipping insertion in model container [2025-03-16 13:47:15,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 01:47:15" (3/3) ... [2025-03-16 13:47:15,538 INFO L128 eAbstractionObserver]: Analyzing ICFG transpose-u.c [2025-03-16 13:47:15,548 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 13:47:15,549 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG transpose-u.c that has 1 procedures, 14 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-16 13:47:15,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 13:47:15,589 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;@60458085, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 13:47:15,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 13:47:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:15,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-16 13:47:15,595 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:47:15,595 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:47:15,595 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:47:15,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:47:15,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1512466291, now seen corresponding path program 1 times [2025-03-16 13:47:15,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 13:47:15,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559819778] [2025-03-16 13:47:15,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:47:15,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:47:15,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:47:15,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:47:15,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 13:47:15,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 13:47:15,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 13:47:15,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:47:15,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:47:15,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 13:47:15,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:47:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 13:47:15,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 13:47:15,728 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 13:47:15,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559819778] [2025-03-16 13:47:15,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559819778] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:47:15,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:47:15,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 13:47:15,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520436904] [2025-03-16 13:47:15,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:47:15,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 13:47:15,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 13:47:15,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 13:47:15,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 13:47:15,745 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:47:15,819 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2025-03-16 13:47:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 13:47:15,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-16 13:47:15,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:47:15,827 INFO L225 Difference]: With dead ends: 27 [2025-03-16 13:47:15,828 INFO L226 Difference]: Without dead ends: 13 [2025-03-16 13:47:15,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 13:47:15,831 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 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 [2025-03-16 13:47:15,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:47:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-03-16 13:47:15,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2025-03-16 13:47:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:15,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2025-03-16 13:47:15,860 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 17 transitions. Word has length 7 [2025-03-16 13:47:15,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:47:15,860 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 17 transitions. [2025-03-16 13:47:15,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:15,860 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 17 transitions. [2025-03-16 13:47:15,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-16 13:47:15,860 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:47:15,861 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:47:15,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 13:47:16,061 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 [2025-03-16 13:47:16,061 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:47:16,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:47:16,062 INFO L85 PathProgramCache]: Analyzing trace with hash -560059477, now seen corresponding path program 1 times [2025-03-16 13:47:16,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 13:47:16,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108317052] [2025-03-16 13:47:16,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:47:16,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:47:16,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:47:16,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:47:16,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 13:47:16,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-16 13:47:16,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-16 13:47:16,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:47:16,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:47:16,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 13:47:16,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:47:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 13:47:16,154 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 13:47:16,154 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 13:47:16,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108317052] [2025-03-16 13:47:16,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108317052] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:47:16,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:47:16,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 13:47:16,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712501737] [2025-03-16 13:47:16,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:47:16,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 13:47:16,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 13:47:16,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 13:47:16,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 13:47:16,155 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:47:16,265 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2025-03-16 13:47:16,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 13:47:16,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-16 13:47:16,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:47:16,270 INFO L225 Difference]: With dead ends: 29 [2025-03-16 13:47:16,270 INFO L226 Difference]: Without dead ends: 19 [2025-03-16 13:47:16,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 13:47:16,271 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 7 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 [2025-03-16 13:47:16,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 7 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:47:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-03-16 13:47:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2025-03-16 13:47:16,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2025-03-16 13:47:16,277 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 9 [2025-03-16 13:47:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:47:16,277 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2025-03-16 13:47:16,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2025-03-16 13:47:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 13:47:16,278 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:47:16,278 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:47:16,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 13:47:16,478 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 [2025-03-16 13:47:16,479 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:47:16,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:47:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1731156007, now seen corresponding path program 1 times [2025-03-16 13:47:16,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 13:47:16,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821127896] [2025-03-16 13:47:16,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:47:16,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:47:16,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:47:16,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:47:16,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 13:47:16,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 13:47:16,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 13:47:16,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:47:16,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:47:16,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 13:47:16,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:47:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 13:47:16,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 13:47:16,591 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 13:47:16,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821127896] [2025-03-16 13:47:16,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821127896] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:47:16,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:47:16,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 13:47:16,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788055143] [2025-03-16 13:47:16,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:47:16,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 13:47:16,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 13:47:16,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 13:47:16,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 13:47:16,593 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2025-03-16 13:47:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:47:16,694 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2025-03-16 13:47:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 13:47:16,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 [2025-03-16 13:47:16,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:47:16,697 INFO L225 Difference]: With dead ends: 34 [2025-03-16 13:47:16,697 INFO L226 Difference]: Without dead ends: 27 [2025-03-16 13:47:16,698 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 [2025-03-16 13:47:16,698 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9 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 [2025-03-16 13:47:16,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:47:16,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-03-16 13:47:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2025-03-16 13:47:16,702 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) [2025-03-16 13:47:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2025-03-16 13:47:16,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 10 [2025-03-16 13:47:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:47:16,702 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2025-03-16 13:47:16,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2025-03-16 13:47:16,702 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2025-03-16 13:47:16,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-16 13:47:16,702 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:47:16,703 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:47:16,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 13:47:16,903 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 [2025-03-16 13:47:16,905 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:47:16,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:47:16,905 INFO L85 PathProgramCache]: Analyzing trace with hash 489403853, now seen corresponding path program 1 times [2025-03-16 13:47:16,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 13:47:16,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047411949] [2025-03-16 13:47:16,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:47:16,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:47:16,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:47:16,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:47:16,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 13:47:16,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-16 13:47:16,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-16 13:47:16,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:47:16,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:47:17,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 13:47:17,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:47:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 13:47:17,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:47:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 13:47:17,081 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 13:47:17,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047411949] [2025-03-16 13:47:17,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047411949] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:47:17,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-16 13:47:17,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-16 13:47:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596591435] [2025-03-16 13:47:17,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-16 13:47:17,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 13:47:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 13:47:17,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 13:47:17,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-16 13:47:17,083 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:17,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:47:17,341 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2025-03-16 13:47:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 13:47:17,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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 13 [2025-03-16 13:47:17,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:47:17,345 INFO L225 Difference]: With dead ends: 51 [2025-03-16 13:47:17,345 INFO L226 Difference]: Without dead ends: 37 [2025-03-16 13:47:17,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2025-03-16 13:47:17,345 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 59 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 16 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 [2025-03-16 13:47:17,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 16 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 13:47:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-16 13:47:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-03-16 13:47:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2025-03-16 13:47:17,351 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 13 [2025-03-16 13:47:17,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:47:17,351 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2025-03-16 13:47:17,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2025-03-16 13:47:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-16 13:47:17,353 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:47:17,353 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:47:17,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 13:47:17,553 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 [2025-03-16 13:47:17,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:47:17,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:47:17,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2008649549, now seen corresponding path program 2 times [2025-03-16 13:47:17,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 13:47:17,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772978764] [2025-03-16 13:47:17,555 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:47:17,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:47:17,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:47:17,556 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:47:17,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 13:47:17,596 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-16 13:47:17,670 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-16 13:47:17,670 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:47:17,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:47:17,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 13:47:17,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:47:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 13:47:17,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:47:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 13:47:17,801 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 13:47:17,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772978764] [2025-03-16 13:47:17,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772978764] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:47:17,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-16 13:47:17,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2025-03-16 13:47:17,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705335216] [2025-03-16 13:47:17,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-16 13:47:17,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 13:47:17,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 13:47:17,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 13:47:17,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-16 13:47:17,802 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:17,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:47:17,976 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2025-03-16 13:47:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 13:47:17,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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 19 [2025-03-16 13:47:17,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:47:17,978 INFO L225 Difference]: With dead ends: 72 [2025-03-16 13:47:17,978 INFO L226 Difference]: Without dead ends: 49 [2025-03-16 13:47:17,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-03-16 13:47:17,978 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13 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 [2025-03-16 13:47:17,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 13 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:47:17,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-03-16 13:47:17,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-03-16 13:47:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:17,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2025-03-16 13:47:17,987 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 19 [2025-03-16 13:47:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:47:17,987 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2025-03-16 13:47:17,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2025-03-16 13:47:17,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-16 13:47:17,988 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:47:17,988 INFO L218 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:47:18,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-16 13:47:18,189 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 [2025-03-16 13:47:18,190 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:47:18,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:47:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1781299367, now seen corresponding path program 3 times [2025-03-16 13:47:18,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 13:47:18,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54730138] [2025-03-16 13:47:18,191 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:47:18,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:47:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:47:18,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:47:18,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 13:47:18,246 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 13 equivalence classes. [2025-03-16 13:47:18,274 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 11 of 37 statements. [2025-03-16 13:47:18,274 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-16 13:47:18,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:47:18,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 13:47:18,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:47:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-03-16 13:47:18,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:47:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-03-16 13:47:18,469 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 13:47:18,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54730138] [2025-03-16 13:47:18,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54730138] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:47:18,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-16 13:47:18,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-16 13:47:18,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811668488] [2025-03-16 13:47:18,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-16 13:47:18,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 13:47:18,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 13:47:18,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 13:47:18,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-16 13:47:18,471 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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) [2025-03-16 13:47:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:47:18,705 INFO L93 Difference]: Finished difference Result 132 states and 165 transitions. [2025-03-16 13:47:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 13:47:18,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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) Word has length 37 [2025-03-16 13:47:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:47:18,707 INFO L225 Difference]: With dead ends: 132 [2025-03-16 13:47:18,709 INFO L226 Difference]: Without dead ends: 116 [2025-03-16 13:47:18,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2025-03-16 13:47:18,710 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 104 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 13:47:18,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 21 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 13:47:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-16 13:47:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 67. [2025-03-16 13:47:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:47:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2025-03-16 13:47:18,734 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 37 [2025-03-16 13:47:18,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:47:18,735 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2025-03-16 13:47:18,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 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) [2025-03-16 13:47:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2025-03-16 13:47:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-16 13:47:18,736 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:47:18,736 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:47:18,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-16 13:47:18,936 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 [2025-03-16 13:47:18,936 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:47:18,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:47:18,937 INFO L85 PathProgramCache]: Analyzing trace with hash 179742093, now seen corresponding path program 4 times [2025-03-16 13:47:18,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 13:47:18,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805974061] [2025-03-16 13:47:18,937 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 13:47:18,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:47:18,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:47:18,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:47:18,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 13:47:19,011 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 55 statements into 2 equivalence classes.