./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array21_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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-patterns/array21_pattern.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 f1a738dced8b73ebc8edf3e480fddcd32bb19127a8255980e93fab5e96705ab3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 00:38:26,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 00:38:26,129 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 00:38:26,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 00:38:26,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 00:38:26,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 00:38:26,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 00:38:26,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 00:38:26,153 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 00:38:26,153 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 00:38:26,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 00:38:26,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 00:38:26,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 00:38:26,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 00:38:26,154 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 00:38:26,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 00:38:26,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 00:38:26,154 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 00:38:26,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 00:38:26,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 00:38:26,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 00:38:26,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 00:38:26,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 00:38:26,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 00:38:26,157 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 00:38:26,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 00:38:26,157 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 00:38:26,157 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 00:38:26,157 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 00:38:26,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 00:38:26,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 00:38:26,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 00:38:26,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:38:26,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 00:38:26,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 00:38:26,158 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 00:38:26,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 00:38:26,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 00:38:26,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 00:38:26,158 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 00:38:26,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 00:38:26,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 00:38:26,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 00:38:26,158 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 -> f1a738dced8b73ebc8edf3e480fddcd32bb19127a8255980e93fab5e96705ab3 [2025-03-08 00:38:26,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 00:38:26,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 00:38:26,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 00:38:26,379 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 00:38:26,379 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 00:38:26,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array21_pattern.c [2025-03-08 00:38:27,470 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec37bb177/207ab5caa17b41d2bf74991a601b6a15/FLAG4fd63a741 [2025-03-08 00:38:27,664 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 00:38:27,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array21_pattern.c [2025-03-08 00:38:27,673 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec37bb177/207ab5caa17b41d2bf74991a601b6a15/FLAG4fd63a741 [2025-03-08 00:38:27,682 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec37bb177/207ab5caa17b41d2bf74991a601b6a15 [2025-03-08 00:38:27,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 00:38:27,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 00:38:27,685 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 00:38:27,685 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 00:38:27,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 00:38:27,688 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0174ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27, skipping insertion in model container [2025-03-08 00:38:27,688 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,697 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 00:38:27,798 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-patterns/array21_pattern.c[1340,1353] [2025-03-08 00:38:27,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:38:27,831 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 00:38:27,839 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-patterns/array21_pattern.c[1340,1353] [2025-03-08 00:38:27,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:38:27,862 INFO L204 MainTranslator]: Completed translation [2025-03-08 00:38:27,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27 WrapperNode [2025-03-08 00:38:27,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 00:38:27,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 00:38:27,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 00:38:27,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 00:38:27,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,889 INFO L138 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2025-03-08 00:38:27,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 00:38:27,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 00:38:27,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 00:38:27,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 00:38:27,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,897 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,904 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-08 00:38:27,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,907 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 00:38:27,911 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 00:38:27,911 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 00:38:27,911 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 00:38:27,913 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (1/1) ... [2025-03-08 00:38:27,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:38:27,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:27,934 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) [2025-03-08 00:38:27,936 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 [2025-03-08 00:38:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2025-03-08 00:38:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2025-03-08 00:38:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 00:38:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 00:38:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 00:38:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 00:38:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 00:38:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 00:38:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 00:38:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 00:38:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 00:38:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 00:38:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 00:38:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 00:38:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 00:38:28,000 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 00:38:28,001 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 00:38:28,116 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L52: call ULTIMATE.dealloc(main_~#array~0#1.base, main_~#array~0#1.offset);havoc main_~#array~0#1.base, main_~#array~0#1.offset; [2025-03-08 00:38:28,131 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-03-08 00:38:28,131 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 00:38:28,139 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 00:38:28,139 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 00:38:28,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:38:28 BoogieIcfgContainer [2025-03-08 00:38:28,139 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 00:38:28,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 00:38:28,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 00:38:28,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 00:38:28,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 12:38:27" (1/3) ... [2025-03-08 00:38:28,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0649e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:38:28, skipping insertion in model container [2025-03-08 00:38:28,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:38:27" (2/3) ... [2025-03-08 00:38:28,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0649e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:38:28, skipping insertion in model container [2025-03-08 00:38:28,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:38:28" (3/3) ... [2025-03-08 00:38:28,146 INFO L128 eAbstractionObserver]: Analyzing ICFG array21_pattern.c [2025-03-08 00:38:28,154 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 00:38:28,155 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array21_pattern.c that has 3 procedures, 35 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-03-08 00:38:28,185 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 00:38:28,192 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;@3691f057, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 00:38:28,192 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 00:38:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 00:38:28,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 00:38:28,198 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:28,198 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:28,198 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:28,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash -148552546, now seen corresponding path program 1 times [2025-03-08 00:38:28,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:28,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407559669] [2025-03-08 00:38:28,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:28,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:28,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 00:38:28,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 00:38:28,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:28,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:38:28,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:28,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407559669] [2025-03-08 00:38:28,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407559669] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:38:28,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:38:28,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 00:38:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166054501] [2025-03-08 00:38:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:38:28,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 00:38:28,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:28,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 00:38:28,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 00:38:28,327 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 00:38:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:28,342 INFO L93 Difference]: Finished difference Result 67 states and 95 transitions. [2025-03-08 00:38:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 00:38:28,343 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2025-03-08 00:38:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:28,348 INFO L225 Difference]: With dead ends: 67 [2025-03-08 00:38:28,348 INFO L226 Difference]: Without dead ends: 31 [2025-03-08 00:38:28,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 00:38:28,353 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:28,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:38:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-03-08 00:38:28,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2025-03-08 00:38:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 00:38:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2025-03-08 00:38:28,382 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 14 [2025-03-08 00:38:28,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:28,382 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2025-03-08 00:38:28,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-08 00:38:28,383 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2025-03-08 00:38:28,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-08 00:38:28,384 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:28,384 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:28,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 00:38:28,384 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:28,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1107213646, now seen corresponding path program 1 times [2025-03-08 00:38:28,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:28,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902938923] [2025-03-08 00:38:28,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:28,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:28,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-08 00:38:28,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-08 00:38:28,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:28,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 00:38:28,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902938923] [2025-03-08 00:38:28,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902938923] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:38:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970532119] [2025-03-08 00:38:28,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:28,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:28,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:28,676 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) [2025-03-08 00:38:28,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 00:38:28,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-08 00:38:28,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-08 00:38:28,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:28,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:28,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 00:38:28,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 00:38:28,866 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 00:38:28,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970532119] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:38:28,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 00:38:28,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-03-08 00:38:28,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670599278] [2025-03-08 00:38:28,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:38:28,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 00:38:28,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:28,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 00:38:28,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-08 00:38:28,869 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-08 00:38:28,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:28,949 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2025-03-08 00:38:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 00:38:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2025-03-08 00:38:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:28,951 INFO L225 Difference]: With dead ends: 69 [2025-03-08 00:38:28,951 INFO L226 Difference]: Without dead ends: 38 [2025-03-08 00:38:28,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-08 00:38:28,952 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:28,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 133 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:38:28,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-03-08 00:38:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2025-03-08 00:38:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 00:38:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2025-03-08 00:38:28,957 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 34 [2025-03-08 00:38:28,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:28,958 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2025-03-08 00:38:28,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-08 00:38:28,958 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2025-03-08 00:38:28,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-08 00:38:28,959 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:28,960 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:28,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 00:38:29,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:29,160 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:29,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:29,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1952965616, now seen corresponding path program 1 times [2025-03-08 00:38:29,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:29,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200454923] [2025-03-08 00:38:29,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:29,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:29,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-08 00:38:29,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 00:38:29,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:29,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 00:38:29,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:29,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200454923] [2025-03-08 00:38:29,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200454923] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:38:29,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:38:29,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 00:38:29,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132567023] [2025-03-08 00:38:29,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:38:29,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 00:38:29,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:29,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 00:38:29,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:38:29,263 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 00:38:29,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:29,304 INFO L93 Difference]: Finished difference Result 64 states and 88 transitions. [2025-03-08 00:38:29,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 00:38:29,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2025-03-08 00:38:29,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:29,305 INFO L225 Difference]: With dead ends: 64 [2025-03-08 00:38:29,305 INFO L226 Difference]: Without dead ends: 37 [2025-03-08 00:38:29,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:38:29,306 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:29,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 86 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:38:29,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-08 00:38:29,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2025-03-08 00:38:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 00:38:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2025-03-08 00:38:29,310 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 36 [2025-03-08 00:38:29,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:29,310 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2025-03-08 00:38:29,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 00:38:29,311 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2025-03-08 00:38:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 00:38:29,311 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:29,311 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:29,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 00:38:29,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:29,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:29,312 INFO L85 PathProgramCache]: Analyzing trace with hash 65402151, now seen corresponding path program 1 times [2025-03-08 00:38:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:29,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679194075] [2025-03-08 00:38:29,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:29,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:29,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 00:38:29,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 00:38:29,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:29,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 00:38:29,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:29,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679194075] [2025-03-08 00:38:29,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679194075] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:38:29,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38381107] [2025-03-08 00:38:29,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:29,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:29,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:29,463 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) [2025-03-08 00:38:29,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 00:38:29,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 00:38:29,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 00:38:29,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:29,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:29,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 00:38:29,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-08 00:38:29,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:38:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 00:38:29,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38381107] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:38:29,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:38:29,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2025-03-08 00:38:29,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140030052] [2025-03-08 00:38:29,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:38:29,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 00:38:29,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:29,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 00:38:29,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-08 00:38:29,650 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 00:38:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:29,766 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2025-03-08 00:38:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 00:38:29,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 37 [2025-03-08 00:38:29,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:29,769 INFO L225 Difference]: With dead ends: 44 [2025-03-08 00:38:29,769 INFO L226 Difference]: Without dead ends: 41 [2025-03-08 00:38:29,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2025-03-08 00:38:29,770 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:29,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 106 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:38:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-03-08 00:38:29,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2025-03-08 00:38:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 00:38:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2025-03-08 00:38:29,777 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 37 [2025-03-08 00:38:29,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:29,777 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2025-03-08 00:38:29,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 00:38:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2025-03-08 00:38:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-03-08 00:38:29,778 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:29,778 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:29,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 00:38:29,978 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,SelfDestructingSolverStorable3 [2025-03-08 00:38:29,979 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:29,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:29,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1429959391, now seen corresponding path program 1 times [2025-03-08 00:38:29,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:29,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604677202] [2025-03-08 00:38:29,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:29,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-08 00:38:29,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-08 00:38:29,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:29,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 00:38:30,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:30,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604677202] [2025-03-08 00:38:30,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604677202] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:38:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017106232] [2025-03-08 00:38:30,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:30,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:30,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:30,083 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) [2025-03-08 00:38:30,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 00:38:30,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-08 00:38:30,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-08 00:38:30,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:30,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:30,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 00:38:30,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 00:38:30,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:38:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 00:38:30,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017106232] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:38:30,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:38:30,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2025-03-08 00:38:30,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028406686] [2025-03-08 00:38:30,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:38:30,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 00:38:30,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:30,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 00:38:30,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-03-08 00:38:30,290 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 00:38:30,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:30,439 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2025-03-08 00:38:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 00:38:30,439 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2025-03-08 00:38:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:30,440 INFO L225 Difference]: With dead ends: 72 [2025-03-08 00:38:30,440 INFO L226 Difference]: Without dead ends: 43 [2025-03-08 00:38:30,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2025-03-08 00:38:30,441 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 118 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:30,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 146 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:38:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-03-08 00:38:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2025-03-08 00:38:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 00:38:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2025-03-08 00:38:30,445 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 40 [2025-03-08 00:38:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:30,445 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2025-03-08 00:38:30,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 00:38:30,446 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2025-03-08 00:38:30,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-08 00:38:30,446 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:30,446 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:30,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 00:38:30,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:30,647 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:30,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:30,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2103100338, now seen corresponding path program 2 times [2025-03-08 00:38:30,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:30,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866514720] [2025-03-08 00:38:30,648 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:38:30,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:30,654 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-08 00:38:30,660 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-08 00:38:30,660 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:38:30,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-08 00:38:30,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:30,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866514720] [2025-03-08 00:38:30,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866514720] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:38:30,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142889082] [2025-03-08 00:38:30,731 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:38:30,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:30,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:30,733 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) [2025-03-08 00:38:30,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 00:38:30,765 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-08 00:38:30,780 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-08 00:38:30,780 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:38:30,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:30,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 00:38:30,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-08 00:38:30,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:38:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-08 00:38:30,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142889082] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:38:30,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:38:30,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-03-08 00:38:30,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511239726] [2025-03-08 00:38:30,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:38:30,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 00:38:30,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:30,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 00:38:30,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-03-08 00:38:30,872 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 00:38:30,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:30,974 INFO L93 Difference]: Finished difference Result 83 states and 105 transitions. [2025-03-08 00:38:30,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 00:38:30,977 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2025-03-08 00:38:30,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:30,978 INFO L225 Difference]: With dead ends: 83 [2025-03-08 00:38:30,978 INFO L226 Difference]: Without dead ends: 55 [2025-03-08 00:38:30,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-08 00:38:30,978 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:30,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 259 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:38:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-03-08 00:38:30,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2025-03-08 00:38:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 00:38:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2025-03-08 00:38:30,985 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 42 [2025-03-08 00:38:30,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:30,985 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2025-03-08 00:38:30,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 00:38:30,986 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2025-03-08 00:38:30,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-08 00:38:30,986 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:30,987 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:30,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 00:38:31,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:31,188 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:31,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1502099790, now seen corresponding path program 3 times [2025-03-08 00:38:31,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:31,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227115428] [2025-03-08 00:38:31,189 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:38:31,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:31,207 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 7 equivalence classes. [2025-03-08 00:38:31,243 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 50 of 50 statements. [2025-03-08 00:38:31,243 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-08 00:38:31,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 00:38:31,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609949919] [2025-03-08 00:38:31,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:38:31,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:31,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:31,249 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) [2025-03-08 00:38:31,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 00:38:31,281 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 7 equivalence classes. [2025-03-08 00:38:31,581 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 50 of 50 statements. [2025-03-08 00:38:31,581 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-08 00:38:31,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:31,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-03-08 00:38:31,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:31,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 00:38:31,669 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 19 treesize of output 18 [2025-03-08 00:38:31,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:31,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:31,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:38:31,774 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 28 treesize of output 30 [2025-03-08 00:38:31,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:31,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:31,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:31,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:31,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:38:31,827 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 39 treesize of output 44 [2025-03-08 00:38:32,380 INFO L349 Elim1Store]: treesize reduction 64, result has 48.8 percent of original size [2025-03-08 00:38:32,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 86 [2025-03-08 00:38:33,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:38:33,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 146 treesize of output 112 [2025-03-08 00:38:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 00:38:33,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:38:34,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:34,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227115428] [2025-03-08 00:38:34,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 00:38:34,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609949919] [2025-03-08 00:38:34,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609949919] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:38:34,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 00:38:34,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2025-03-08 00:38:34,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976927015] [2025-03-08 00:38:34,396 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 00:38:34,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-08 00:38:34,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:34,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-08 00:38:34,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 00:38:34,397 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 00:38:34,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:34,905 INFO L93 Difference]: Finished difference Result 104 states and 134 transitions. [2025-03-08 00:38:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 00:38:34,905 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2025-03-08 00:38:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:34,906 INFO L225 Difference]: With dead ends: 104 [2025-03-08 00:38:34,906 INFO L226 Difference]: Without dead ends: 95 [2025-03-08 00:38:34,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=191, Invalid=1215, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 00:38:34,907 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 19 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:34,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 395 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 00:38:34,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-03-08 00:38:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 79. [2025-03-08 00:38:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-08 00:38:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2025-03-08 00:38:34,919 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 50 [2025-03-08 00:38:34,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:34,919 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2025-03-08 00:38:34,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 00:38:34,919 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2025-03-08 00:38:34,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-08 00:38:34,920 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:34,920 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:34,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 00:38:35,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:35,121 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:35,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:35,121 INFO L85 PathProgramCache]: Analyzing trace with hash 5452019, now seen corresponding path program 1 times [2025-03-08 00:38:35,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:35,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455854542] [2025-03-08 00:38:35,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:35,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:35,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-08 00:38:35,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-08 00:38:35,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:35,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-08 00:38:35,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:35,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455854542] [2025-03-08 00:38:35,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455854542] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:38:35,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:38:35,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:38:35,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525938561] [2025-03-08 00:38:35,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:38:35,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:38:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:35,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:38:35,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:38:35,148 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 00:38:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:35,163 INFO L93 Difference]: Finished difference Result 113 states and 143 transitions. [2025-03-08 00:38:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:38:35,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2025-03-08 00:38:35,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:35,165 INFO L225 Difference]: With dead ends: 113 [2025-03-08 00:38:35,165 INFO L226 Difference]: Without dead ends: 81 [2025-03-08 00:38:35,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:38:35,166 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:35,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:38:35,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-03-08 00:38:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2025-03-08 00:38:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 66 states have internal predecessors, (83), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-08 00:38:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2025-03-08 00:38:35,176 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 50 [2025-03-08 00:38:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:35,176 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2025-03-08 00:38:35,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 00:38:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2025-03-08 00:38:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-08 00:38:35,177 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:35,177 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:35,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 00:38:35,177 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:35,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:35,178 INFO L85 PathProgramCache]: Analyzing trace with hash 680502040, now seen corresponding path program 4 times [2025-03-08 00:38:35,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:35,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604193021] [2025-03-08 00:38:35,178 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:38:35,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:35,183 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-03-08 00:38:35,190 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 45 of 51 statements. [2025-03-08 00:38:35,190 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-08 00:38:35,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-08 00:38:35,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:35,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604193021] [2025-03-08 00:38:35,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604193021] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:38:35,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012096310] [2025-03-08 00:38:35,260 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:38:35,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:35,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:35,262 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) [2025-03-08 00:38:35,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 00:38:35,296 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-03-08 00:38:35,308 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 45 of 51 statements. [2025-03-08 00:38:35,309 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-08 00:38:35,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:35,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 00:38:35,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 00:38:35,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:38:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-08 00:38:35,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012096310] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:38:35,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:38:35,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-03-08 00:38:35,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716040654] [2025-03-08 00:38:35,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:38:35,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 00:38:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:35,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 00:38:35,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-03-08 00:38:35,443 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 00:38:35,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:35,538 INFO L93 Difference]: Finished difference Result 221 states and 284 transitions. [2025-03-08 00:38:35,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 00:38:35,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2025-03-08 00:38:35,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:35,539 INFO L225 Difference]: With dead ends: 221 [2025-03-08 00:38:35,539 INFO L226 Difference]: Without dead ends: 146 [2025-03-08 00:38:35,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-03-08 00:38:35,540 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:35,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 128 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:38:35,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-03-08 00:38:35,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2025-03-08 00:38:35,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 116 states have (on average 1.2672413793103448) internal successors, (147), 116 states have internal predecessors, (147), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-08 00:38:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 181 transitions. [2025-03-08 00:38:35,556 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 181 transitions. Word has length 51 [2025-03-08 00:38:35,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:35,557 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 181 transitions. [2025-03-08 00:38:35,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 00:38:35,557 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 181 transitions. [2025-03-08 00:38:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-08 00:38:35,558 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:35,558 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:35,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 00:38:35,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:35,760 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:35,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:35,760 INFO L85 PathProgramCache]: Analyzing trace with hash -719196104, now seen corresponding path program 5 times [2025-03-08 00:38:35,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:35,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279770341] [2025-03-08 00:38:35,760 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 00:38:35,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:35,767 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 8 equivalence classes. [2025-03-08 00:38:35,773 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 25 of 53 statements. [2025-03-08 00:38:35,774 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-08 00:38:35,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-08 00:38:35,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:35,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279770341] [2025-03-08 00:38:35,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279770341] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:38:35,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405346556] [2025-03-08 00:38:35,832 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 00:38:35,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:35,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:35,834 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) [2025-03-08 00:38:35,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 00:38:35,867 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 8 equivalence classes. [2025-03-08 00:38:35,883 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 25 of 53 statements. [2025-03-08 00:38:35,883 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-08 00:38:35,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:35,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 00:38:35,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 00:38:35,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:38:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-08 00:38:35,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405346556] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:38:35,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:38:35,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-03-08 00:38:35,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947765462] [2025-03-08 00:38:35,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:38:35,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 00:38:35,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:35,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 00:38:35,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-03-08 00:38:35,982 INFO L87 Difference]: Start difference. First operand 143 states and 181 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 00:38:36,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:36,153 INFO L93 Difference]: Finished difference Result 252 states and 321 transitions. [2025-03-08 00:38:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 00:38:36,153 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2025-03-08 00:38:36,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:36,155 INFO L225 Difference]: With dead ends: 252 [2025-03-08 00:38:36,155 INFO L226 Difference]: Without dead ends: 142 [2025-03-08 00:38:36,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 94 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2025-03-08 00:38:36,156 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 28 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:36,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 221 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:38:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-03-08 00:38:36,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 124. [2025-03-08 00:38:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 103 states have (on average 1.2718446601941749) internal successors, (131), 103 states have internal predecessors, (131), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 00:38:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 157 transitions. [2025-03-08 00:38:36,175 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 157 transitions. Word has length 53 [2025-03-08 00:38:36,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:36,175 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 157 transitions. [2025-03-08 00:38:36,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 00:38:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 157 transitions. [2025-03-08 00:38:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-03-08 00:38:36,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:36,176 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:36,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 00:38:36,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:36,377 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:36,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:36,377 INFO L85 PathProgramCache]: Analyzing trace with hash 637047504, now seen corresponding path program 6 times [2025-03-08 00:38:36,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:36,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495090233] [2025-03-08 00:38:36,377 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 00:38:36,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:36,383 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 54 statements into 9 equivalence classes. [2025-03-08 00:38:36,393 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 44 of 54 statements. [2025-03-08 00:38:36,393 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-08 00:38:36,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 00:38:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495090233] [2025-03-08 00:38:36,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495090233] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:38:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534196472] [2025-03-08 00:38:36,449 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 00:38:36,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:36,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:36,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:38:36,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 00:38:36,490 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 54 statements into 9 equivalence classes. [2025-03-08 00:38:36,511 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 44 of 54 statements. [2025-03-08 00:38:36,511 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-08 00:38:36,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:36,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 00:38:36,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-08 00:38:36,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:38:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 00:38:36,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534196472] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:38:36,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:38:36,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-03-08 00:38:36,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113807907] [2025-03-08 00:38:36,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:38:36,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 00:38:36,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:36,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 00:38:36,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-03-08 00:38:36,602 INFO L87 Difference]: Start difference. First operand 124 states and 157 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 00:38:36,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:36,677 INFO L93 Difference]: Finished difference Result 159 states and 199 transitions. [2025-03-08 00:38:36,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 00:38:36,678 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2025-03-08 00:38:36,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:36,678 INFO L225 Difference]: With dead ends: 159 [2025-03-08 00:38:36,678 INFO L226 Difference]: Without dead ends: 120 [2025-03-08 00:38:36,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 98 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-03-08 00:38:36,679 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:36,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 265 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:38:36,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-03-08 00:38:36,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-03-08 00:38:36,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 99 states have internal predecessors, (122), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 00:38:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 148 transitions. [2025-03-08 00:38:36,691 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 148 transitions. Word has length 54 [2025-03-08 00:38:36,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:36,691 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 148 transitions. [2025-03-08 00:38:36,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 00:38:36,691 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 148 transitions. [2025-03-08 00:38:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-08 00:38:36,691 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:36,692 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:36,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 00:38:36,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 00:38:36,892 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:36,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash 71952114, now seen corresponding path program 1 times [2025-03-08 00:38:36,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:36,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633035715] [2025-03-08 00:38:36,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:36,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:36,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-08 00:38:36,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-08 00:38:36,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:36,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-03-08 00:38:36,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:36,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633035715] [2025-03-08 00:38:36,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633035715] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:38:36,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672248327] [2025-03-08 00:38:36,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:36,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:36,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:36,982 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:38:36,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 00:38:37,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-08 00:38:37,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-08 00:38:37,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:37,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:37,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 00:38:37,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-08 00:38:37,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 00:38:37,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672248327] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:38:37,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 00:38:37,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-08 00:38:37,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673730691] [2025-03-08 00:38:37,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:38:37,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 00:38:37,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:37,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 00:38:37,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 00:38:37,058 INFO L87 Difference]: Start difference. First operand 120 states and 148 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 00:38:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:37,083 INFO L93 Difference]: Finished difference Result 211 states and 264 transitions. [2025-03-08 00:38:37,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 00:38:37,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2025-03-08 00:38:37,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:37,085 INFO L225 Difference]: With dead ends: 211 [2025-03-08 00:38:37,085 INFO L226 Difference]: Without dead ends: 132 [2025-03-08 00:38:37,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 00:38:37,086 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:37,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 143 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:38:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-03-08 00:38:37,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2025-03-08 00:38:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 108 states have (on average 1.212962962962963) internal successors, (131), 108 states have internal predecessors, (131), 13 states have call successors, (13), 7 states have call predecessors, (13), 10 states have return successors, (19), 16 states have call predecessors, (19), 13 states have call successors, (19) [2025-03-08 00:38:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 163 transitions. [2025-03-08 00:38:37,103 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 163 transitions. Word has length 56 [2025-03-08 00:38:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:37,103 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 163 transitions. [2025-03-08 00:38:37,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 00:38:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 163 transitions. [2025-03-08 00:38:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-08 00:38:37,104 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:37,104 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:37,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 00:38:37,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:37,306 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:37,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash 102971921, now seen corresponding path program 1 times [2025-03-08 00:38:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173194691] [2025-03-08 00:38:37,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:37,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:37,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-08 00:38:37,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-08 00:38:37,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:37,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-03-08 00:38:37,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:37,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173194691] [2025-03-08 00:38:37,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173194691] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:38:37,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:38:37,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 00:38:37,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998402747] [2025-03-08 00:38:37,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:38:37,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 00:38:37,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:37,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 00:38:37,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:38:37,377 INFO L87 Difference]: Start difference. First operand 132 states and 163 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 00:38:37,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:37,409 INFO L93 Difference]: Finished difference Result 216 states and 269 transitions. [2025-03-08 00:38:37,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 00:38:37,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 56 [2025-03-08 00:38:37,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:37,410 INFO L225 Difference]: With dead ends: 216 [2025-03-08 00:38:37,410 INFO L226 Difference]: Without dead ends: 138 [2025-03-08 00:38:37,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:38:37,414 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:37,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:38:37,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-03-08 00:38:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2025-03-08 00:38:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 108 states have internal predecessors, (134), 13 states have call successors, (13), 7 states have call predecessors, (13), 10 states have return successors, (19), 19 states have call predecessors, (19), 13 states have call successors, (19) [2025-03-08 00:38:37,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 166 transitions. [2025-03-08 00:38:37,429 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 166 transitions. Word has length 56 [2025-03-08 00:38:37,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:37,430 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 166 transitions. [2025-03-08 00:38:37,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-08 00:38:37,430 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 166 transitions. [2025-03-08 00:38:37,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-08 00:38:37,431 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:37,431 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:37,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 00:38:37,431 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:37,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:37,431 INFO L85 PathProgramCache]: Analyzing trace with hash -741499950, now seen corresponding path program 1 times [2025-03-08 00:38:37,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:37,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198223319] [2025-03-08 00:38:37,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:37,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:37,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-08 00:38:37,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-08 00:38:37,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:37,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 00:38:37,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:37,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198223319] [2025-03-08 00:38:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198223319] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:38:37,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135233986] [2025-03-08 00:38:37,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:38:37,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:37,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:37,606 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:38:37,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 00:38:37,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-08 00:38:37,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-08 00:38:37,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:37,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:37,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 00:38:37,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:37,791 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 00:38:37,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:38:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 00:38:37,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135233986] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:38:37,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:38:37,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 23 [2025-03-08 00:38:37,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387737208] [2025-03-08 00:38:37,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:38:37,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 00:38:37,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:37,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 00:38:37,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2025-03-08 00:38:37,963 INFO L87 Difference]: Start difference. First operand 135 states and 166 transitions. Second operand has 23 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 6 states have call successors, (12), 3 states have call predecessors, (12), 9 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2025-03-08 00:38:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:38,246 INFO L93 Difference]: Finished difference Result 191 states and 221 transitions. [2025-03-08 00:38:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 00:38:38,246 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 6 states have call successors, (12), 3 states have call predecessors, (12), 9 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 56 [2025-03-08 00:38:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:38,247 INFO L225 Difference]: With dead ends: 191 [2025-03-08 00:38:38,247 INFO L226 Difference]: Without dead ends: 134 [2025-03-08 00:38:38,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2025-03-08 00:38:38,248 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:38,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 361 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 00:38:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2025-03-08 00:38:38,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 125. [2025-03-08 00:38:38,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 103 states have internal predecessors, (120), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2025-03-08 00:38:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2025-03-08 00:38:38,259 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 56 [2025-03-08 00:38:38,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:38,259 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2025-03-08 00:38:38,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 6 states have call successors, (12), 3 states have call predecessors, (12), 9 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2025-03-08 00:38:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2025-03-08 00:38:38,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-08 00:38:38,260 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:38,260 INFO L218 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:38,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-08 00:38:38,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 00:38:38,461 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:38,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:38,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1459355468, now seen corresponding path program 7 times [2025-03-08 00:38:38,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:38,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424831506] [2025-03-08 00:38:38,461 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 00:38:38,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:38,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-08 00:38:38,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-08 00:38:38,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:38,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 00:38:38,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:38:38,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424831506] [2025-03-08 00:38:38,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424831506] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:38:38,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392156522] [2025-03-08 00:38:38,544 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 00:38:38,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:38,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:38,546 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:38:38,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 00:38:38,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-08 00:38:38,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-08 00:38:38,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:38:38,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:38,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 00:38:38,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 27 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-08 00:38:38,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:38:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 00:38:38,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392156522] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:38:38,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:38:38,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-03-08 00:38:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271222953] [2025-03-08 00:38:38,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:38:38,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 00:38:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:38:38,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 00:38:38,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-03-08 00:38:38,699 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 00:38:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:38:38,801 INFO L93 Difference]: Finished difference Result 158 states and 179 transitions. [2025-03-08 00:38:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 00:38:38,802 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 56 [2025-03-08 00:38:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:38:38,802 INFO L225 Difference]: With dead ends: 158 [2025-03-08 00:38:38,802 INFO L226 Difference]: Without dead ends: 121 [2025-03-08 00:38:38,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2025-03-08 00:38:38,803 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 34 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:38:38,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 269 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:38:38,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-03-08 00:38:38,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2025-03-08 00:38:38,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 98 states have (on average 1.1428571428571428) internal successors, (112), 97 states have internal predecessors, (112), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2025-03-08 00:38:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2025-03-08 00:38:38,814 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 56 [2025-03-08 00:38:38,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:38:38,814 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2025-03-08 00:38:38,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 00:38:38,814 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2025-03-08 00:38:38,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-08 00:38:38,814 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:38:38,814 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:38:38,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-08 00:38:39,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 00:38:39,015 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:38:39,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:38:39,016 INFO L85 PathProgramCache]: Analyzing trace with hash 987029985, now seen corresponding path program 8 times [2025-03-08 00:38:39,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:38:39,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87133389] [2025-03-08 00:38:39,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:38:39,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:38:39,022 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 64 statements into 2 equivalence classes. [2025-03-08 00:38:39,038 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-03-08 00:38:39,038 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:38:39,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 00:38:39,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635208168] [2025-03-08 00:38:39,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:38:39,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:38:39,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:38:39,041 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:38:39,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 00:38:39,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 64 statements into 2 equivalence classes. [2025-03-08 00:38:39,527 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-03-08 00:38:39,528 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:38:39,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:38:39,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 112 conjuncts are in the unsatisfiable core [2025-03-08 00:38:39,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:38:39,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 00:38:39,580 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 19 treesize of output 18 [2025-03-08 00:38:39,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:38:39,606 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 26 treesize of output 28 [2025-03-08 00:38:39,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:38:39,701 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 35 treesize of output 40 [2025-03-08 00:38:39,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:38:39,741 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 46 treesize of output 54 [2025-03-08 00:38:39,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:38:39,795 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 57 treesize of output 68 [2025-03-08 00:38:39,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:38:39,929 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 66 treesize of output 80 [2025-03-08 00:38:39,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:39,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:38:39,997 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 77 treesize of output 94 [2025-03-08 00:38:40,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:40,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:38:40,087 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 88 treesize of output 108 [2025-03-08 00:38:41,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:41,480 INFO L349 Elim1Store]: treesize reduction 386, result has 32.6 percent of original size [2025-03-08 00:38:41,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 39 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 165 case distinctions, treesize of input 186 treesize of output 318 [2025-03-08 00:38:45,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:45,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 00:38:46,093 INFO L349 Elim1Store]: treesize reduction 80, result has 75.2 percent of original size [2025-03-08 00:38:46,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 36 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 412 treesize of output 399 [2025-03-08 00:38:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 00:38:52,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:39:17,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:39:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87133389] [2025-03-08 00:39:17,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 00:39:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635208168] [2025-03-08 00:39:17,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635208168] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:39:17,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 00:39:17,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2025-03-08 00:39:17,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258666622] [2025-03-08 00:39:17,687 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 00:39:17,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-08 00:39:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:39:17,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-08 00:39:17,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=3760, Unknown=3, NotChecked=0, Total=4160 [2025-03-08 00:39:17,689 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand has 42 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 41 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-08 00:39:21,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:39:21,460 INFO L93 Difference]: Finished difference Result 189 states and 228 transitions. [2025-03-08 00:39:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-08 00:39:21,460 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 41 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 64 [2025-03-08 00:39:21,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:39:21,461 INFO L225 Difference]: With dead ends: 189 [2025-03-08 00:39:21,461 INFO L226 Difference]: Without dead ends: 186 [2025-03-08 00:39:21,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=435, Invalid=4118, Unknown=3, NotChecked=0, Total=4556 [2025-03-08 00:39:21,463 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 30 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:39:21,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 892 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-08 00:39:21,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-03-08 00:39:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 156. [2025-03-08 00:39:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 129 states have (on average 1.1550387596899225) internal successors, (149), 129 states have internal predecessors, (149), 15 states have call successors, (15), 9 states have call predecessors, (15), 11 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2025-03-08 00:39:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2025-03-08 00:39:21,486 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 64 [2025-03-08 00:39:21,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:39:21,494 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2025-03-08 00:39:21,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 41 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-08 00:39:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2025-03-08 00:39:21,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-08 00:39:21,495 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:39:21,495 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:39:21,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-08 00:39:21,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 00:39:21,697 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:39:21,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:39:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1948644002, now seen corresponding path program 1 times [2025-03-08 00:39:21,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:39:21,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017815700] [2025-03-08 00:39:21,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:39:21,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:39:21,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-08 00:39:21,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-08 00:39:21,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:39:21,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:39:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-08 00:39:21,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:39:21,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017815700] [2025-03-08 00:39:21,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017815700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:39:21,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:39:21,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 00:39:21,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25276141] [2025-03-08 00:39:21,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:39:21,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 00:39:21,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:39:21,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 00:39:21,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:39:21,776 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 00:39:21,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:39:21,830 INFO L93 Difference]: Finished difference Result 201 states and 238 transitions. [2025-03-08 00:39:21,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 00:39:21,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 64 [2025-03-08 00:39:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:39:21,831 INFO L225 Difference]: With dead ends: 201 [2025-03-08 00:39:21,831 INFO L226 Difference]: Without dead ends: 156 [2025-03-08 00:39:21,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:39:21,832 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:39:21,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:39:21,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-03-08 00:39:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2025-03-08 00:39:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 129 states have (on average 1.1395348837209303) internal successors, (147), 129 states have internal predecessors, (147), 15 states have call successors, (15), 9 states have call predecessors, (15), 11 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2025-03-08 00:39:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 181 transitions. [2025-03-08 00:39:21,858 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 181 transitions. Word has length 64 [2025-03-08 00:39:21,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:39:21,858 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 181 transitions. [2025-03-08 00:39:21,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 00:39:21,858 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 181 transitions. [2025-03-08 00:39:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-08 00:39:21,859 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:39:21,859 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:39:21,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 00:39:21,859 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:39:21,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:39:21,859 INFO L85 PathProgramCache]: Analyzing trace with hash 534113737, now seen corresponding path program 9 times [2025-03-08 00:39:21,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:39:21,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68117665] [2025-03-08 00:39:21,859 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:39:21,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:39:21,866 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 65 statements into 11 equivalence classes. [2025-03-08 00:39:21,886 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 51 of 65 statements. [2025-03-08 00:39:21,886 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 00:39:21,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:39:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 28 proven. 49 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 00:39:22,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:39:22,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68117665] [2025-03-08 00:39:22,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68117665] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:39:22,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763079382] [2025-03-08 00:39:22,052 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:39:22,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:39:22,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:39:22,054 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:39:22,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-08 00:39:22,106 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 65 statements into 11 equivalence classes. [2025-03-08 00:39:22,248 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 51 of 65 statements. [2025-03-08 00:39:22,249 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 00:39:22,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:39:22,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 00:39:22,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:39:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 00:39:22,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:39:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 23 proven. 54 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 00:39:22,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763079382] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:39:22,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:39:22,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-03-08 00:39:22,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516674142] [2025-03-08 00:39:22,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:39:22,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 00:39:22,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:39:22,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 00:39:22,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-03-08 00:39:22,486 INFO L87 Difference]: Start difference. First operand 156 states and 181 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 00:39:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:39:22,813 INFO L93 Difference]: Finished difference Result 336 states and 405 transitions. [2025-03-08 00:39:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 00:39:22,814 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2025-03-08 00:39:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:39:22,815 INFO L225 Difference]: With dead ends: 336 [2025-03-08 00:39:22,815 INFO L226 Difference]: Without dead ends: 246 [2025-03-08 00:39:22,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 120 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2025-03-08 00:39:22,816 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 30 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 00:39:22,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 269 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 00:39:22,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-03-08 00:39:22,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 233. [2025-03-08 00:39:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 192 states have (on average 1.1510416666666667) internal successors, (221), 192 states have internal predecessors, (221), 23 states have call successors, (23), 13 states have call predecessors, (23), 17 states have return successors, (31), 27 states have call predecessors, (31), 23 states have call successors, (31) [2025-03-08 00:39:22,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 275 transitions. [2025-03-08 00:39:22,852 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 275 transitions. Word has length 65 [2025-03-08 00:39:22,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:39:22,852 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 275 transitions. [2025-03-08 00:39:22,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 00:39:22,852 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 275 transitions. [2025-03-08 00:39:22,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-08 00:39:22,853 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:39:22,853 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:39:22,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-08 00:39:23,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-08 00:39:23,054 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:39:23,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:39:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash -458067873, now seen corresponding path program 1 times [2025-03-08 00:39:23,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:39:23,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458392898] [2025-03-08 00:39:23,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:39:23,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:39:23,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-08 00:39:23,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-08 00:39:23,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:39:23,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 00:39:23,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780832319] [2025-03-08 00:39:23,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:39:23,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:39:23,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:39:23,078 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:39:23,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-08 00:39:23,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-08 00:39:23,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-08 00:39:23,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:39:23,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:39:23,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-03-08 00:39:23,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:39:23,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 00:39:23,467 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 19 treesize of output 18 [2025-03-08 00:39:23,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:39:23,639 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 26 treesize of output 28 [2025-03-08 00:39:23,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:39:23,714 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 33 treesize of output 38 [2025-03-08 00:39:24,823 INFO L349 Elim1Store]: treesize reduction 64, result has 48.8 percent of original size [2025-03-08 00:39:24,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 86 [2025-03-08 00:39:43,003 INFO L349 Elim1Store]: treesize reduction 1636, result has 27.3 percent of original size [2025-03-08 00:39:43,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 26 select indices, 26 select index equivalence classes, 6 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 351 case distinctions, treesize of input 299 treesize of output 753