/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/byte_add_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:35:05,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:35:05,214 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 13:35:05,218 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:35:05,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:35:05,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:35:05,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:35:05,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:35:05,235 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:35:05,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:35:05,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:35:05,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:35:05,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:35:05,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:35:05,237 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:35:05,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:35:05,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:35:05,238 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:35:05,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:35:05,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:35:05,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:35:05,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:35:05,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:35:05,239 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:35:05,239 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:35:05,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:35:05,240 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:35:05,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:35:05,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:35:05,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:35:05,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:35:05,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:35:05,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:35:05,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:35:05,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:35:05,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:35:05,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:35:05,241 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:35:05,241 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:35:05,242 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:35:05,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:35:05,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:35:05,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:35:05,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:35:05,242 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:35:05,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:35:05,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:35:05,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:35:05,412 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:35:05,412 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:35:05,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_1-1.i [2024-11-03 13:35:06,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:35:06,831 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:35:06,831 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/byte_add_1-1.i [2024-11-03 13:35:06,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a71333bf/06fffc2c108146bcac2dc8be84dc2c90/FLAG345461dfc [2024-11-03 13:35:07,253 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a71333bf/06fffc2c108146bcac2dc8be84dc2c90 [2024-11-03 13:35:07,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:35:07,255 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:35:07,256 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:35:07,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:35:07,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:35:07,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51586868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07, skipping insertion in model container [2024-11-03 13:35:07,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,284 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:35:07,398 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/byte_add_1-1.i[1168,1181] [2024-11-03 13:35:07,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:35:07,436 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:35:07,444 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/byte_add_1-1.i[1168,1181] [2024-11-03 13:35:07,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:35:07,472 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:35:07,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07 WrapperNode [2024-11-03 13:35:07,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:35:07,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:35:07,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:35:07,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:35:07,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,502 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2024-11-03 13:35:07,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:35:07,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:35:07,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:35:07,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:35:07,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,519 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 13:35:07,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:35:07,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:35:07,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:35:07,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:35:07,529 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (1/1) ... [2024-11-03 13:35:07,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:35:07,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:35:07,552 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) [2024-11-03 13:35:07,553 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 [2024-11-03 13:35:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:35:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:35:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:35:07,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:35:07,638 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:35:07,640 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:35:07,876 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-03 13:35:07,877 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:35:07,891 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:35:07,891 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 13:35:07,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:35:07 BoogieIcfgContainer [2024-11-03 13:35:07,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:35:07,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:35:07,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:35:07,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:35:07,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:35:07" (1/3) ... [2024-11-03 13:35:07,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510dbb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:35:07, skipping insertion in model container [2024-11-03 13:35:07,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:07" (2/3) ... [2024-11-03 13:35:07,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510dbb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:35:07, skipping insertion in model container [2024-11-03 13:35:07,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:35:07" (3/3) ... [2024-11-03 13:35:07,900 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2024-11-03 13:35:07,910 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:35:07,911 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:35:07,948 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:35:07,953 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;@13e1388a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:35:07,953 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:35:07,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:07,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 13:35:07,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:07,964 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:07,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:07,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:07,967 INFO L85 PathProgramCache]: Analyzing trace with hash 255061167, now seen corresponding path program 1 times [2024-11-03 13:35:07,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:07,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100691152] [2024-11-03 13:35:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:07,974 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:07,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:07,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:07,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:35:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:08,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 13:35:08,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:08,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:08,046 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:08,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100691152] [2024-11-03 13:35:08,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [100691152] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:08,047 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:08,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 13:35:08,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640529484] [2024-11-03 13:35:08,049 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:08,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 13:35:08,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 13:35:08,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:35:08,066 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:08,076 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2024-11-03 13:35:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 13:35:08,078 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-03 13:35:08,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:08,083 INFO L225 Difference]: With dead ends: 57 [2024-11-03 13:35:08,083 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 13:35:08,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 13:35:08,087 INFO L432 NwaCegarLoop]: 68 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, 68 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 [2024-11-03 13:35:08,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:35:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 13:35:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 13:35:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:08,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2024-11-03 13:35:08,108 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 12 [2024-11-03 13:35:08,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:08,109 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2024-11-03 13:35:08,109 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:08,109 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2024-11-03 13:35:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-03 13:35:08,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:08,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:08,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-03 13:35:08,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:08,312 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:08,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1803477009, now seen corresponding path program 1 times [2024-11-03 13:35:08,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:08,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363180952] [2024-11-03 13:35:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:08,313 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:08,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:08,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:08,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:35:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:08,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:35:08,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:08,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:08,417 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:08,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363180952] [2024-11-03 13:35:08,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [363180952] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:08,417 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:08,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 13:35:08,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655687940] [2024-11-03 13:35:08,418 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:08,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:35:08,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:08,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:35:08,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:35:08,421 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:08,711 INFO L93 Difference]: Finished difference Result 141 states and 255 transitions. [2024-11-03 13:35:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:35:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-03 13:35:08,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:08,713 INFO L225 Difference]: With dead ends: 141 [2024-11-03 13:35:08,714 INFO L226 Difference]: Without dead ends: 113 [2024-11-03 13:35:08,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:35:08,715 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 154 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:08,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 150 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:35:08,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-03 13:35:08,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2024-11-03 13:35:08,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.67) internal successors, (167), 100 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 167 transitions. [2024-11-03 13:35:08,727 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 167 transitions. Word has length 12 [2024-11-03 13:35:08,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:08,727 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 167 transitions. [2024-11-03 13:35:08,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:08,728 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 167 transitions. [2024-11-03 13:35:08,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-03 13:35:08,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:08,728 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:08,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 13:35:08,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:08,929 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:08,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash 583572890, now seen corresponding path program 1 times [2024-11-03 13:35:08,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:08,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521163856] [2024-11-03 13:35:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:08,930 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:08,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:08,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:08,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:35:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:08,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:35:08,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:09,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:09,080 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:09,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521163856] [2024-11-03 13:35:09,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [521163856] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:09,081 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:09,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2024-11-03 13:35:09,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711024022] [2024-11-03 13:35:09,081 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:09,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:35:09,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:09,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:35:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:35:09,083 INFO L87 Difference]: Start difference. First operand 101 states and 167 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:09,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:09,505 INFO L93 Difference]: Finished difference Result 274 states and 490 transitions. [2024-11-03 13:35:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 13:35:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-03 13:35:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:09,506 INFO L225 Difference]: With dead ends: 274 [2024-11-03 13:35:09,507 INFO L226 Difference]: Without dead ends: 229 [2024-11-03 13:35:09,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-03 13:35:09,508 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 793 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:09,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 169 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:35:09,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-03 13:35:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 190. [2024-11-03 13:35:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.656084656084656) internal successors, (313), 189 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 313 transitions. [2024-11-03 13:35:09,531 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 313 transitions. Word has length 14 [2024-11-03 13:35:09,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:09,532 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 313 transitions. [2024-11-03 13:35:09,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:09,532 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 313 transitions. [2024-11-03 13:35:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-03 13:35:09,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:09,533 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:09,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:35:09,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:09,735 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:09,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:09,735 INFO L85 PathProgramCache]: Analyzing trace with hash -842586557, now seen corresponding path program 1 times [2024-11-03 13:35:09,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:09,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497542623] [2024-11-03 13:35:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:09,736 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:09,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:09,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:35:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:09,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:35:09,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:09,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:09,826 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:09,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497542623] [2024-11-03 13:35:09,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [497542623] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:09,826 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:09,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 13:35:09,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221992257] [2024-11-03 13:35:09,826 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:09,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:35:09,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:09,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:35:09,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:35:09,828 INFO L87 Difference]: Start difference. First operand 190 states and 313 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:09,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:09,996 INFO L93 Difference]: Finished difference Result 833 states and 1392 transitions. [2024-11-03 13:35:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 13:35:09,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-03 13:35:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:09,999 INFO L225 Difference]: With dead ends: 833 [2024-11-03 13:35:09,999 INFO L226 Difference]: Without dead ends: 668 [2024-11-03 13:35:10,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:35:10,003 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 215 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:10,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 127 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:35:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-03 13:35:10,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 419. [2024-11-03 13:35:10,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.5406698564593302) internal successors, (644), 418 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:10,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 644 transitions. [2024-11-03 13:35:10,039 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 644 transitions. Word has length 26 [2024-11-03 13:35:10,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:10,039 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 644 transitions. [2024-11-03 13:35:10,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:10,039 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 644 transitions. [2024-11-03 13:35:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-03 13:35:10,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:10,041 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:10,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:35:10,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:10,241 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:10,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:10,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1924928046, now seen corresponding path program 1 times [2024-11-03 13:35:10,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:10,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613974941] [2024-11-03 13:35:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:10,242 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:10,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:10,244 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:10,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:35:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:10,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:35:10,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:10,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:10,362 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:10,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613974941] [2024-11-03 13:35:10,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1613974941] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:10,363 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:10,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2024-11-03 13:35:10,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47651038] [2024-11-03 13:35:10,363 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:10,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 13:35:10,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:10,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 13:35:10,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-03 13:35:10,364 INFO L87 Difference]: Start difference. First operand 419 states and 644 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:10,762 INFO L93 Difference]: Finished difference Result 1106 states and 1813 transitions. [2024-11-03 13:35:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 13:35:10,762 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-03 13:35:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:10,765 INFO L225 Difference]: With dead ends: 1106 [2024-11-03 13:35:10,765 INFO L226 Difference]: Without dead ends: 941 [2024-11-03 13:35:10,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-03 13:35:10,768 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 738 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:10,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 377 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:35:10,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-11-03 13:35:10,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 790. [2024-11-03 13:35:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.5272496831432192) internal successors, (1205), 789 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1205 transitions. [2024-11-03 13:35:10,793 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1205 transitions. Word has length 28 [2024-11-03 13:35:10,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:10,794 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 1205 transitions. [2024-11-03 13:35:10,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:10,795 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1205 transitions. [2024-11-03 13:35:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 13:35:10,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:10,797 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:10,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 13:35:10,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:10,999 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:11,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:11,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2004053295, now seen corresponding path program 1 times [2024-11-03 13:35:11,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:11,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476437158] [2024-11-03 13:35:11,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:11,000 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:11,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:11,001 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:11,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:35:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:11,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:35:11,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:11,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:11,074 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476437158] [2024-11-03 13:35:11,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [476437158] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:11,074 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:11,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:35:11,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386314464] [2024-11-03 13:35:11,075 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:11,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:35:11,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:11,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:35:11,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:11,076 INFO L87 Difference]: Start difference. First operand 790 states and 1205 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:11,174 INFO L93 Difference]: Finished difference Result 1769 states and 2735 transitions. [2024-11-03 13:35:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:35:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-03 13:35:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:11,177 INFO L225 Difference]: With dead ends: 1769 [2024-11-03 13:35:11,177 INFO L226 Difference]: Without dead ends: 1096 [2024-11-03 13:35:11,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:11,179 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 36 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:11,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 61 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:35:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2024-11-03 13:35:11,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 975. [2024-11-03 13:35:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.4948665297741273) internal successors, (1456), 974 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:11,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1456 transitions. [2024-11-03 13:35:11,200 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1456 transitions. Word has length 31 [2024-11-03 13:35:11,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:11,200 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1456 transitions. [2024-11-03 13:35:11,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:11,201 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1456 transitions. [2024-11-03 13:35:11,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 13:35:11,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:11,202 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:11,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 13:35:11,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:11,403 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:11,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:11,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2075339537, now seen corresponding path program 1 times [2024-11-03 13:35:11,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402119323] [2024-11-03 13:35:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:11,404 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:11,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:11,405 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:11,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 13:35:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:11,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:35:11,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:11,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:11,447 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:11,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402119323] [2024-11-03 13:35:11,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1402119323] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:11,448 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:11,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:35:11,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378210396] [2024-11-03 13:35:11,448 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:11,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:35:11,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:11,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:35:11,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:11,449 INFO L87 Difference]: Start difference. First operand 975 states and 1456 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:11,469 INFO L93 Difference]: Finished difference Result 1298 states and 1938 transitions. [2024-11-03 13:35:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:35:11,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-03 13:35:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:11,472 INFO L225 Difference]: With dead ends: 1298 [2024-11-03 13:35:11,472 INFO L226 Difference]: Without dead ends: 1284 [2024-11-03 13:35:11,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:11,473 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 8 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:11,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 122 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:35:11,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-11-03 13:35:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1214. [2024-11-03 13:35:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1213 states have (on average 1.5094806265457543) internal successors, (1831), 1213 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:11,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1831 transitions. [2024-11-03 13:35:11,498 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1831 transitions. Word has length 31 [2024-11-03 13:35:11,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:11,498 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1831 transitions. [2024-11-03 13:35:11,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:11,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1831 transitions. [2024-11-03 13:35:11,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 13:35:11,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:11,499 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:11,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-03 13:35:11,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:11,700 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:11,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1961462321, now seen corresponding path program 1 times [2024-11-03 13:35:11,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:11,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521276935] [2024-11-03 13:35:11,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:11,701 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:11,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:11,702 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:11,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 13:35:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:11,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:35:11,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:11,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:11,858 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:11,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521276935] [2024-11-03 13:35:11,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1521276935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:11,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:11,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 13:35:11,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911586209] [2024-11-03 13:35:11,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:11,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:35:11,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:11,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:35:11,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:35:11,859 INFO L87 Difference]: Start difference. First operand 1214 states and 1831 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:12,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:12,351 INFO L93 Difference]: Finished difference Result 2912 states and 4410 transitions. [2024-11-03 13:35:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 13:35:12,352 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-03 13:35:12,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:12,357 INFO L225 Difference]: With dead ends: 2912 [2024-11-03 13:35:12,358 INFO L226 Difference]: Without dead ends: 2149 [2024-11-03 13:35:12,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2024-11-03 13:35:12,359 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 605 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:12,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 175 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:35:12,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2024-11-03 13:35:12,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1702. [2024-11-03 13:35:12,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 1.5138154027042916) internal successors, (2575), 1701 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:12,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2575 transitions. [2024-11-03 13:35:12,413 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2575 transitions. Word has length 31 [2024-11-03 13:35:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:12,414 INFO L471 AbstractCegarLoop]: Abstraction has 1702 states and 2575 transitions. [2024-11-03 13:35:12,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:12,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2575 transitions. [2024-11-03 13:35:12,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-03 13:35:12,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:12,415 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:12,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Forceful destruction successful, exit code 0 [2024-11-03 13:35:12,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:12,617 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:12,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:12,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1135027793, now seen corresponding path program 1 times [2024-11-03 13:35:12,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:12,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466283497] [2024-11-03 13:35:12,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:12,618 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:12,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:12,620 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:12,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 13:35:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:12,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:35:12,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:12,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:12,796 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:12,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466283497] [2024-11-03 13:35:12,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [466283497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:12,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:12,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 13:35:12,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505172928] [2024-11-03 13:35:12,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:12,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:35:12,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:12,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:35:12,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:35:12,798 INFO L87 Difference]: Start difference. First operand 1702 states and 2575 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:13,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:13,220 INFO L93 Difference]: Finished difference Result 3466 states and 5227 transitions. [2024-11-03 13:35:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-03 13:35:13,220 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-03 13:35:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:13,227 INFO L225 Difference]: With dead ends: 3466 [2024-11-03 13:35:13,227 INFO L226 Difference]: Without dead ends: 2126 [2024-11-03 13:35:13,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-03 13:35:13,229 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 404 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:13,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 274 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:35:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2024-11-03 13:35:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1799. [2024-11-03 13:35:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1798 states have (on average 1.4788654060066742) internal successors, (2659), 1798 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2659 transitions. [2024-11-03 13:35:13,278 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2659 transitions. Word has length 32 [2024-11-03 13:35:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:13,279 INFO L471 AbstractCegarLoop]: Abstraction has 1799 states and 2659 transitions. [2024-11-03 13:35:13,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2659 transitions. [2024-11-03 13:35:13,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-03 13:35:13,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:13,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:13,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-03 13:35:13,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:13,481 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:13,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:13,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2055171256, now seen corresponding path program 1 times [2024-11-03 13:35:13,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:13,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677353215] [2024-11-03 13:35:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:13,482 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:13,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:13,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:13,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 13:35:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:13,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:35:13,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:13,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:13,557 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:13,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677353215] [2024-11-03 13:35:13,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1677353215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:13,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:13,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 13:35:13,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739995912] [2024-11-03 13:35:13,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:13,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:35:13,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:13,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:35:13,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:35:13,559 INFO L87 Difference]: Start difference. First operand 1799 states and 2659 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:13,757 INFO L93 Difference]: Finished difference Result 4035 states and 6139 transitions. [2024-11-03 13:35:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 13:35:13,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-03 13:35:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:13,764 INFO L225 Difference]: With dead ends: 4035 [2024-11-03 13:35:13,764 INFO L226 Difference]: Without dead ends: 2897 [2024-11-03 13:35:13,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-03 13:35:13,766 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 104 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:13,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 101 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:35:13,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2024-11-03 13:35:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2399. [2024-11-03 13:35:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2398 states have (on average 1.4795663052543786) internal successors, (3548), 2398 states have internal predecessors, (3548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3548 transitions. [2024-11-03 13:35:13,864 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3548 transitions. Word has length 33 [2024-11-03 13:35:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:13,864 INFO L471 AbstractCegarLoop]: Abstraction has 2399 states and 3548 transitions. [2024-11-03 13:35:13,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3548 transitions. [2024-11-03 13:35:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-03 13:35:13,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:13,866 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:35:13,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Forceful destruction successful, exit code 0 [2024-11-03 13:35:14,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,067 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:14,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:14,067 INFO L85 PathProgramCache]: Analyzing trace with hash 945650591, now seen corresponding path program 1 times [2024-11-03 13:35:14,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:14,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265388475] [2024-11-03 13:35:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:14,068 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:14,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,070 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:14,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-03 13:35:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:14,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:35:14,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-03 13:35:14,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-03 13:35:14,123 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:14,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265388475] [2024-11-03 13:35:14,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1265388475] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:35:14,123 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:35:14,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:35:14,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072372897] [2024-11-03 13:35:14,123 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:35:14,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:35:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:14,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:35:14,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:14,124 INFO L87 Difference]: Start difference. First operand 2399 states and 3548 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:14,139 INFO L93 Difference]: Finished difference Result 2427 states and 3583 transitions. [2024-11-03 13:35:14,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:35:14,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-03 13:35:14,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:14,141 INFO L225 Difference]: With dead ends: 2427 [2024-11-03 13:35:14,141 INFO L226 Difference]: Without dead ends: 593 [2024-11-03 13:35:14,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:35:14,143 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 108 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:14,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 60 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:35:14,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-03 13:35:14,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2024-11-03 13:35:14,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 1.4611486486486487) internal successors, (865), 592 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:14,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 865 transitions. [2024-11-03 13:35:14,156 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 865 transitions. Word has length 51 [2024-11-03 13:35:14,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:14,156 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 865 transitions. [2024-11-03 13:35:14,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:14,156 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 865 transitions. [2024-11-03 13:35:14,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-03 13:35:14,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:14,157 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1] [2024-11-03 13:35:14,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-03 13:35:14,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,358 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:14,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:14,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1493994486, now seen corresponding path program 1 times [2024-11-03 13:35:14,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:14,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321299159] [2024-11-03 13:35:14,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:14,359 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:14,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,360 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:14,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-03 13:35:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:14,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 13:35:14,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:14,472 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-03 13:35:14,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-03 13:35:14,537 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:14,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321299159] [2024-11-03 13:35:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1321299159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:14,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:14,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 13:35:14,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373533001] [2024-11-03 13:35:14,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:14,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 13:35:14,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:14,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 13:35:14,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:35:14,538 INFO L87 Difference]: Start difference. First operand 593 states and 865 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:14,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:14,749 INFO L93 Difference]: Finished difference Result 1837 states and 2614 transitions. [2024-11-03 13:35:14,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 13:35:14,749 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-03 13:35:14,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:14,752 INFO L225 Difference]: With dead ends: 1837 [2024-11-03 13:35:14,752 INFO L226 Difference]: Without dead ends: 1267 [2024-11-03 13:35:14,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-11-03 13:35:14,754 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 286 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:14,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 363 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:35:14,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2024-11-03 13:35:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 814. [2024-11-03 13:35:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.4686346863468636) internal successors, (1194), 813 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1194 transitions. [2024-11-03 13:35:14,776 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1194 transitions. Word has length 70 [2024-11-03 13:35:14,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:14,776 INFO L471 AbstractCegarLoop]: Abstraction has 814 states and 1194 transitions. [2024-11-03 13:35:14,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1194 transitions. [2024-11-03 13:35:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-03 13:35:14,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:14,777 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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, 1, 1] [2024-11-03 13:35:14,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Ended with exit code 0 [2024-11-03 13:35:14,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,978 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:14,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:14,978 INFO L85 PathProgramCache]: Analyzing trace with hash 464635188, now seen corresponding path program 2 times [2024-11-03 13:35:14,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:14,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638563599] [2024-11-03 13:35:14,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:14,979 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:14,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:14,980 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:14,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-03 13:35:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:15,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 13:35:15,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 65 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 13:35:15,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 13:35:15,146 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:15,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638563599] [2024-11-03 13:35:15,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1638563599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:15,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:15,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2024-11-03 13:35:15,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899115842] [2024-11-03 13:35:15,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:15,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 13:35:15,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:15,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 13:35:15,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:35:15,148 INFO L87 Difference]: Start difference. First operand 814 states and 1194 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:15,343 INFO L93 Difference]: Finished difference Result 2046 states and 2859 transitions. [2024-11-03 13:35:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 13:35:15,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-03 13:35:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:15,347 INFO L225 Difference]: With dead ends: 2046 [2024-11-03 13:35:15,347 INFO L226 Difference]: Without dead ends: 1255 [2024-11-03 13:35:15,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2024-11-03 13:35:15,348 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 244 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:15,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 313 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:35:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-03 13:35:15,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 740. [2024-11-03 13:35:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 1.4005412719891746) internal successors, (1035), 739 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1035 transitions. [2024-11-03 13:35:15,371 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1035 transitions. Word has length 70 [2024-11-03 13:35:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:15,371 INFO L471 AbstractCegarLoop]: Abstraction has 740 states and 1035 transitions. [2024-11-03 13:35:15,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1035 transitions. [2024-11-03 13:35:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-03 13:35:15,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:15,372 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1] [2024-11-03 13:35:15,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-03 13:35:15,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:15,574 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:15,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:15,575 INFO L85 PathProgramCache]: Analyzing trace with hash 605183798, now seen corresponding path program 3 times [2024-11-03 13:35:15,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:15,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635247306] [2024-11-03 13:35:15,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:15,575 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:15,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:15,577 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:15,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-03 13:35:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:15,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-03 13:35:15,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:17,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:19,360 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:19,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635247306] [2024-11-03 13:35:19,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [635247306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:19,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:19,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2024-11-03 13:35:19,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532930007] [2024-11-03 13:35:19,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:19,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-03 13:35:19,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:19,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-03 13:35:19,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2024-11-03 13:35:19,362 INFO L87 Difference]: Start difference. First operand 740 states and 1035 transitions. Second operand has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:30,761 INFO L93 Difference]: Finished difference Result 4098 states and 5603 transitions. [2024-11-03 13:35:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-03 13:35:30,761 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-03 13:35:30,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:30,771 INFO L225 Difference]: With dead ends: 4098 [2024-11-03 13:35:30,771 INFO L226 Difference]: Without dead ends: 3745 [2024-11-03 13:35:30,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3705 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=2637, Invalid=14655, Unknown=0, NotChecked=0, Total=17292 [2024-11-03 13:35:30,775 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 1994 mSDsluCounter, 10840 mSDsCounter, 0 mSdLazyCounter, 6518 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 11325 SdHoareTripleChecker+Invalid, 6706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 6518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:30,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1994 Valid, 11325 Invalid, 6706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 6518 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-03 13:35:30,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2024-11-03 13:35:30,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 2344. [2024-11-03 13:35:30,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 1.4259496372172429) internal successors, (3341), 2343 states have internal predecessors, (3341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 3341 transitions. [2024-11-03 13:35:30,893 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 3341 transitions. Word has length 70 [2024-11-03 13:35:30,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:30,894 INFO L471 AbstractCegarLoop]: Abstraction has 2344 states and 3341 transitions. [2024-11-03 13:35:30,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:30,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 3341 transitions. [2024-11-03 13:35:30,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-03 13:35:30,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:30,896 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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, 1, 1] [2024-11-03 13:35:30,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-03 13:35:31,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:31,098 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:31,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:31,099 INFO L85 PathProgramCache]: Analyzing trace with hash 824038516, now seen corresponding path program 1 times [2024-11-03 13:35:31,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:31,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522426218] [2024-11-03 13:35:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:31,099 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:31,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:31,102 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:31,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-03 13:35:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:31,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:35:31,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 44 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 13:35:31,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 44 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 13:35:31,211 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:31,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522426218] [2024-11-03 13:35:31,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [522426218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:31,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:31,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2024-11-03 13:35:31,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461163737] [2024-11-03 13:35:31,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:31,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 13:35:31,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:31,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 13:35:31,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-03 13:35:31,212 INFO L87 Difference]: Start difference. First operand 2344 states and 3341 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:31,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:35:31,408 INFO L93 Difference]: Finished difference Result 4742 states and 6762 transitions. [2024-11-03 13:35:31,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 13:35:31,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-03 13:35:31,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:35:31,414 INFO L225 Difference]: With dead ends: 4742 [2024-11-03 13:35:31,414 INFO L226 Difference]: Without dead ends: 2418 [2024-11-03 13:35:31,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-03 13:35:31,416 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:35:31,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 81 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:35:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2024-11-03 13:35:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 1311. [2024-11-03 13:35:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1310 states have (on average 1.4114503816793893) internal successors, (1849), 1310 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1849 transitions. [2024-11-03 13:35:31,507 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1849 transitions. Word has length 70 [2024-11-03 13:35:31,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:35:31,508 INFO L471 AbstractCegarLoop]: Abstraction has 1311 states and 1849 transitions. [2024-11-03 13:35:31,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:35:31,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1849 transitions. [2024-11-03 13:35:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 13:35:31,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:35:31,512 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-11-03 13:35:31,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Forceful destruction successful, exit code 0 [2024-11-03 13:35:31,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:31,713 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:35:31,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:35:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1235371034, now seen corresponding path program 1 times [2024-11-03 13:35:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:35:31,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436856289] [2024-11-03 13:35:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:35:31,714 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:35:31,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:35:31,715 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:35:31,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-03 13:35:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:35:31,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-03 13:35:31,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:35:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:33,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:35:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:35:35,922 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:35:35,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436856289] [2024-11-03 13:35:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [436856289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:35:35,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:35:35,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2024-11-03 13:35:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078253569] [2024-11-03 13:35:35,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:35:35,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-03 13:35:35,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:35:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-03 13:35:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1921, Unknown=0, NotChecked=0, Total=2070 [2024-11-03 13:35:35,923 INFO L87 Difference]: Start difference. First operand 1311 states and 1849 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:11,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:11,511 INFO L93 Difference]: Finished difference Result 6479 states and 8511 transitions. [2024-11-03 13:36:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2024-11-03 13:36:11,511 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-03 13:36:11,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:11,523 INFO L225 Difference]: With dead ends: 6479 [2024-11-03 13:36:11,523 INFO L226 Difference]: Without dead ends: 5737 [2024-11-03 13:36:11,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24101 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=8282, Invalid=63810, Unknown=0, NotChecked=0, Total=72092 [2024-11-03 13:36:11,531 INFO L432 NwaCegarLoop]: 796 mSDtfsCounter, 2414 mSDsluCounter, 17974 mSDsCounter, 0 mSdLazyCounter, 11147 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2414 SdHoareTripleChecker+Valid, 18770 SdHoareTripleChecker+Invalid, 11523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 11147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:11,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2414 Valid, 18770 Invalid, 11523 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [376 Valid, 11147 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-03 13:36:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2024-11-03 13:36:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 3045. [2024-11-03 13:36:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 3044 states have (on average 1.4050591327201052) internal successors, (4277), 3044 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 4277 transitions. [2024-11-03 13:36:11,694 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 4277 transitions. Word has length 74 [2024-11-03 13:36:11,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:11,694 INFO L471 AbstractCegarLoop]: Abstraction has 3045 states and 4277 transitions. [2024-11-03 13:36:11,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 4277 transitions. [2024-11-03 13:36:11,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 13:36:11,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:11,696 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1] [2024-11-03 13:36:11,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Ended with exit code 0 [2024-11-03 13:36:11,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:11,897 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:11,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:11,897 INFO L85 PathProgramCache]: Analyzing trace with hash -877944922, now seen corresponding path program 1 times [2024-11-03 13:36:11,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:11,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592291280] [2024-11-03 13:36:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:11,898 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:11,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:11,899 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:11,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-03 13:36:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:11,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-03 13:36:11,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:14,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:15,752 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:15,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592291280] [2024-11-03 13:36:15,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1592291280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:36:15,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:36:15,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2024-11-03 13:36:15,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573965528] [2024-11-03 13:36:15,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:36:15,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-03 13:36:15,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:15,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-03 13:36:15,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1933, Unknown=0, NotChecked=0, Total=2070 [2024-11-03 13:36:15,753 INFO L87 Difference]: Start difference. First operand 3045 states and 4277 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:32,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:32,898 INFO L93 Difference]: Finished difference Result 6063 states and 8090 transitions. [2024-11-03 13:36:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-03 13:36:32,899 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-03 13:36:32,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:32,905 INFO L225 Difference]: With dead ends: 6063 [2024-11-03 13:36:32,906 INFO L226 Difference]: Without dead ends: 5317 [2024-11-03 13:36:32,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5201 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=2489, Invalid=18681, Unknown=0, NotChecked=0, Total=21170 [2024-11-03 13:36:32,908 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 1535 mSDsluCounter, 11192 mSDsCounter, 0 mSdLazyCounter, 6713 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 11656 SdHoareTripleChecker+Invalid, 6827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 6713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:32,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 11656 Invalid, 6827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 6713 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-03 13:36:32,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5317 states. [2024-11-03 13:36:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5317 to 3218. [2024-11-03 13:36:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3217 states have (on average 1.4031706558905812) internal successors, (4514), 3217 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 4514 transitions. [2024-11-03 13:36:33,090 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 4514 transitions. Word has length 74 [2024-11-03 13:36:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:33,090 INFO L471 AbstractCegarLoop]: Abstraction has 3218 states and 4514 transitions. [2024-11-03 13:36:33,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:33,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 4514 transitions. [2024-11-03 13:36:33,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-03 13:36:33,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:33,092 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:36:33,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Ended with exit code 0 [2024-11-03 13:36:33,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:33,292 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:33,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash -904299993, now seen corresponding path program 1 times [2024-11-03 13:36:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808443440] [2024-11-03 13:36:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:33,293 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:33,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:33,294 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:33,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Waiting until timeout for monitored process [2024-11-03 13:36:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:33,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 13:36:33,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:33,388 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 1 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:33,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 1 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:33,472 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:33,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808443440] [2024-11-03 13:36:33,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [808443440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:36:33,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:36:33,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-03 13:36:33,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57347962] [2024-11-03 13:36:33,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:36:33,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 13:36:33,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:33,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 13:36:33,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-03 13:36:33,474 INFO L87 Difference]: Start difference. First operand 3218 states and 4514 transitions. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:36:34,449 INFO L93 Difference]: Finished difference Result 12291 states and 18737 transitions. [2024-11-03 13:36:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 13:36:34,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-03 13:36:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:36:34,456 INFO L225 Difference]: With dead ends: 12291 [2024-11-03 13:36:34,456 INFO L226 Difference]: Without dead ends: 6067 [2024-11-03 13:36:34,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-03 13:36:34,459 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 296 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:36:34,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 168 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:36:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6067 states. [2024-11-03 13:36:34,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6067 to 5256. [2024-11-03 13:36:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 5255 states have (on average 1.20837297811608) internal successors, (6350), 5255 states have internal predecessors, (6350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 6350 transitions. [2024-11-03 13:36:34,828 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 6350 transitions. Word has length 76 [2024-11-03 13:36:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:36:34,828 INFO L471 AbstractCegarLoop]: Abstraction has 5256 states and 6350 transitions. [2024-11-03 13:36:34,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:36:34,828 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 6350 transitions. [2024-11-03 13:36:34,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-03 13:36:34,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:36:34,829 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:36:34,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Ended with exit code 0 [2024-11-03 13:36:35,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:35,030 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:36:35,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:36:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1461199560, now seen corresponding path program 1 times [2024-11-03 13:36:35,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:36:35,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244296109] [2024-11-03 13:36:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:36:35,031 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:36:35,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:36:35,033 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:36:35,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Waiting until timeout for monitored process [2024-11-03 13:36:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:36:35,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-03 13:36:35,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:36:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:37,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:36:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:36:39,747 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:36:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244296109] [2024-11-03 13:36:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1244296109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:36:39,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:36:39,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2024-11-03 13:36:39,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200806926] [2024-11-03 13:36:39,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:36:39,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-03 13:36:39,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:36:39,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-03 13:36:39,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2096, Unknown=0, NotChecked=0, Total=2256 [2024-11-03 13:36:39,749 INFO L87 Difference]: Start difference. First operand 5256 states and 6350 transitions. Second operand has 48 states, 48 states have (on average 3.1666666666666665) internal successors, (152), 48 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)