/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 Internal_SMTInterpol -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.recount4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 01:36:08,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 01:36:08,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 01:36:08,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 01:36:08,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 01:36:08,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 01:36:08,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 01:36:08,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 01:36:08,978 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 01:36:08,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 01:36:08,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 01:36:08,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 01:36:08,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 01:36:08,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 01:36:08,981 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 01:36:08,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 01:36:08,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 01:36:08,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 01:36:08,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 01:36:08,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 01:36:08,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 01:36:08,987 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 01:36:08,987 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 01:36:08,988 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 01:36:08,988 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 01:36:08,988 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 01:36:08,988 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 01:36:08,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 01:36:08,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 01:36:08,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 01:36:08,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 01:36:08,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 01:36:08,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 01:36:08,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 01:36:08,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 01:36:08,994 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 01:36:08,994 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 01:36:08,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 01:36:08,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 01:36:08,995 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 01:36:08,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 01:36:08,997 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 01:36:08,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol [2024-11-01 01:36:09,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 01:36:09,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 01:36:09,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 01:36:09,370 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 01:36:09,370 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 01:36:09,372 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.recount4.c [2024-11-01 01:36:10,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 01:36:11,121 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 01:36:11,122 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.recount4.c [2024-11-01 01:36:11,132 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e932aae/7bdcb2c39bae47729fea66e813a3f0e9/FLAGed7a0c396 [2024-11-01 01:36:11,507 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e932aae/7bdcb2c39bae47729fea66e813a3f0e9 [2024-11-01 01:36:11,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 01:36:11,511 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 01:36:11,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 01:36:11,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 01:36:11,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 01:36:11,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143919b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11, skipping insertion in model container [2024-11-01 01:36:11,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,545 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 01:36:11,730 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.recount4.c[1258,1271] [2024-11-01 01:36:11,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 01:36:11,779 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 01:36:11,792 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.recount4.c[1258,1271] [2024-11-01 01:36:11,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 01:36:11,834 INFO L204 MainTranslator]: Completed translation [2024-11-01 01:36:11,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11 WrapperNode [2024-11-01 01:36:11,836 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 01:36:11,837 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 01:36:11,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 01:36:11,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 01:36:11,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,871 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2024-11-01 01:36:11,872 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 01:36:11,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 01:36:11,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 01:36:11,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 01:36:11,883 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,903 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]. [2024-11-01 01:36:11,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,911 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,917 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 01:36:11,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 01:36:11,924 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 01:36:11,924 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 01:36:11,925 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (1/1) ... [2024-11-01 01:36:11,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 01:36:11,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 01:36:11,957 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) [2024-11-01 01:36:11,964 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 [2024-11-01 01:36:11,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 01:36:11,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 01:36:11,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 01:36:11,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 01:36:12,075 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 01:36:12,078 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 01:36:12,256 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-01 01:36:12,257 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 01:36:12,273 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 01:36:12,273 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 01:36:12,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 01:36:12 BoogieIcfgContainer [2024-11-01 01:36:12,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 01:36:12,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 01:36:12,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 01:36:12,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 01:36:12,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 01:36:11" (1/3) ... [2024-11-01 01:36:12,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db72f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 01:36:12, skipping insertion in model container [2024-11-01 01:36:12,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 01:36:11" (2/3) ... [2024-11-01 01:36:12,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db72f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 01:36:12, skipping insertion in model container [2024-11-01 01:36:12,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 01:36:12" (3/3) ... [2024-11-01 01:36:12,284 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.recount4.c [2024-11-01 01:36:12,301 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 01:36:12,302 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 01:36:12,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 01:36:12,368 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;@4bf5f96c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 01:36:12,368 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 01:36:12,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 01:36:12,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-01 01:36:12,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 01:36:12,383 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-01 01:36:12,384 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 01:36:12,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 01:36:12,390 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-01 01:36:12,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 01:36:12,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777611516] [2024-11-01 01:36:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 01:36:12,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-01 01:36:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 01:36:13,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-01 01:36:13,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 01:36:13,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 01:36:13,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 01:36:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 01:36:13,532 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 01:36:13,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777611516] [2024-11-01 01:36:13,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1777611516] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 01:36:13,533 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 01:36:13,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 01:36:13,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405577014] [2024-11-01 01:36:13,536 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 01:36:13,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 01:36:13,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 01:36:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 01:36:13,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 01:36:13,567 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 01:36:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 01:36:13,627 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-01 01:36:13,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 01:36:13,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-01 01:36:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 01:36:13,637 INFO L225 Difference]: With dead ends: 18 [2024-11-01 01:36:13,638 INFO L226 Difference]: Without dead ends: 10 [2024-11-01 01:36:13,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-01 01:36:13,645 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 01:36:13,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 01:36:13,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-01 01:36:13,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-01 01:36:13,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 01:36:13,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-01 01:36:13,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-01 01:36:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 01:36:13,679 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-01 01:36:13,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 01:36:13,679 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-01 01:36:13,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-01 01:36:13,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 01:36:13,681 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-01 01:36:13,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-01 01:36:13,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 01:36:13,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 01:36:13,684 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-01 01:36:13,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 01:36:13,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044276851] [2024-11-01 01:36:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 01:36:13,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-01 01:36:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 01:36:15,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-01 01:36:15,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 01:36:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 01:36:15,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 01:36:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 01:36:15,746 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 01:36:15,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044276851] [2024-11-01 01:36:15,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1044276851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 01:36:15,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 01:36:15,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-01 01:36:15,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216303264] [2024-11-01 01:36:15,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 01:36:15,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-01 01:36:15,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 01:36:15,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-01 01:36:15,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-01 01:36:15,750 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 01:36:15,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 01:36:15,918 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-11-01 01:36:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 01:36:15,920 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-01 01:36:15,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 01:36:15,920 INFO L225 Difference]: With dead ends: 18 [2024-11-01 01:36:15,920 INFO L226 Difference]: Without dead ends: 16 [2024-11-01 01:36:15,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-11-01 01:36:15,922 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 01:36:15,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 01:36:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-01 01:36:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-01 01:36:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2024-11-01 01:36:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-01 01:36:15,930 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2024-11-01 01:36:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 01:36:15,930 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-01 01:36:15,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 01:36:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-01 01:36:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-01 01:36:15,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 01:36:15,932 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2024-11-01 01:36:15,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-01 01:36:15,932 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 01:36:15,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 01:36:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 2 times [2024-11-01 01:36:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 01:36:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643155696] [2024-11-01 01:36:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 01:36:15,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-01 01:36:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 01:36:22,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-01 01:36:22,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 01:36:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 01:36:23,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 01:36:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 01:36:24,680 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 01:36:24,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643155696] [2024-11-01 01:36:24,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [643155696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 01:36:24,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 01:36:24,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-01 01:36:24,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141555512] [2024-11-01 01:36:24,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 01:36:24,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-01 01:36:24,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 01:36:24,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-01 01:36:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-01 01:36:24,686 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 01:36:25,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 01:36:25,358 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-11-01 01:36:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-01 01:36:25,359 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-01 01:36:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 01:36:25,359 INFO L225 Difference]: With dead ends: 30 [2024-11-01 01:36:25,359 INFO L226 Difference]: Without dead ends: 28 [2024-11-01 01:36:25,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=194, Invalid=358, Unknown=0, NotChecked=0, Total=552 [2024-11-01 01:36:25,361 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 01:36:25,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 22 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 01:36:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-01 01:36:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-01 01:36:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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) [2024-11-01 01:36:25,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2024-11-01 01:36:25,370 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2024-11-01 01:36:25,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 01:36:25,370 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2024-11-01 01:36:25,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 01:36:25,371 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2024-11-01 01:36:25,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-01 01:36:25,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 01:36:25,372 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2024-11-01 01:36:25,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-01 01:36:25,372 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 01:36:25,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 01:36:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash 96933411, now seen corresponding path program 3 times [2024-11-01 01:36:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 01:36:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616387425] [2024-11-01 01:36:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 01:36:25,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-01 01:36:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 01:36:39,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-01 01:36:39,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 01:36:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 01:36:40,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 01:36:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 01:36:47,060 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 01:36:47,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616387425] [2024-11-01 01:36:47,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1616387425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 01:36:47,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 01:36:47,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2024-11-01 01:36:47,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637677988] [2024-11-01 01:36:47,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 01:36:47,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-01 01:36:47,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 01:36:47,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-01 01:36:47,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=289, Unknown=0, NotChecked=0, Total=462 [2024-11-01 01:36:47,065 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 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) [2024-11-01 01:36:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 01:36:50,728 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-11-01 01:36:50,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-01 01:36:50,729 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 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 [2024-11-01 01:36:50,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 01:36:50,730 INFO L225 Difference]: With dead ends: 54 [2024-11-01 01:36:50,730 INFO L226 Difference]: Without dead ends: 52 [2024-11-01 01:36:50,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=680, Invalid=1212, Unknown=0, NotChecked=0, Total=1892 [2024-11-01 01:36:50,732 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-01 01:36:50,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 22 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-01 01:36:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-01 01:36:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2024-11-01 01:36:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 01:36:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2024-11-01 01:36:50,748 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2024-11-01 01:36:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 01:36:50,748 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2024-11-01 01:36:50,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 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) [2024-11-01 01:36:50,749 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2024-11-01 01:36:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-01 01:36:50,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 01:36:50,750 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1] [2024-11-01 01:36:50,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-01 01:36:50,750 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 01:36:50,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 01:36:50,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2084907299, now seen corresponding path program 4 times [2024-11-01 01:36:50,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 01:36:50,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132947216] [2024-11-01 01:36:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 01:36:50,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms