/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-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/sum02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-10-31 15:04:45,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 15:04:45,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-31 15:04:45,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 15:04:45,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 15:04:45,730 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 15:04:45,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 15:04:45,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 15:04:45,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 15:04:45,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 15:04:45,732 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 15:04:45,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 15:04:45,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 15:04:45,733 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 15:04:45,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 15:04:45,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 15:04:45,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 15:04:45,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 15:04:45,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 15:04:45,735 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 15:04:45,735 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 15:04:45,739 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 15:04:45,739 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 15:04:45,739 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 15:04:45,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 15:04:45,740 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 15:04:45,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 15:04:45,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 15:04:45,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 15:04:45,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 15:04:45,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 15:04:45,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 15:04:45,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 15:04:45,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 15:04:45,741 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 15:04:45,742 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 15:04:45,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 15:04:45,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 15:04:45,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 15:04:45,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 15:04:45,743 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 15:04:45,744 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol [2024-10-31 15:04:46,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 15:04:46,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 15:04:46,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 15:04:46,095 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 15:04:46,095 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 15:04:46,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/sum02-2.c [2024-10-31 15:04:47,574 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 15:04:47,770 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 15:04:47,770 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/sum02-2.c [2024-10-31 15:04:47,775 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/880736fcf/41cff68535bb4bd187d5ef7eb7464587/FLAG129b1cb3b [2024-10-31 15:04:48,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/880736fcf/41cff68535bb4bd187d5ef7eb7464587 [2024-10-31 15:04:48,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 15:04:48,139 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-10-31 15:04:48,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 15:04:48,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 15:04:48,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 15:04:48,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cbe13f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48, skipping insertion in model container [2024-10-31 15:04:48,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,163 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 15:04:48,322 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/sum02-2.c[711,724] [2024-10-31 15:04:48,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 15:04:48,346 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 15:04:48,359 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/sum02-2.c[711,724] [2024-10-31 15:04:48,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 15:04:48,382 INFO L204 MainTranslator]: Completed translation [2024-10-31 15:04:48,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48 WrapperNode [2024-10-31 15:04:48,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 15:04:48,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 15:04:48,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 15:04:48,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 15:04:48,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,399 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,415 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 36 [2024-10-31 15:04:48,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 15:04:48,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 15:04:48,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 15:04:48,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 15:04:48,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,427 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,442 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]. [2024-10-31 15:04:48,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 15:04:48,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 15:04:48,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 15:04:48,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 15:04:48,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (1/1) ... [2024-10-31 15:04:48,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 15:04:48,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 15:04:48,493 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) [2024-10-31 15:04:48,495 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 [2024-10-31 15:04:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 15:04:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 15:04:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 15:04:48,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 15:04:48,601 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 15:04:48,603 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 15:04:48,781 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-10-31 15:04:48,782 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 15:04:48,795 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 15:04:48,797 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 15:04:48,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 03:04:48 BoogieIcfgContainer [2024-10-31 15:04:48,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 15:04:48,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 15:04:48,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 15:04:48,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 15:04:48,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 03:04:48" (1/3) ... [2024-10-31 15:04:48,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d60574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 03:04:48, skipping insertion in model container [2024-10-31 15:04:48,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 03:04:48" (2/3) ... [2024-10-31 15:04:48,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d60574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 03:04:48, skipping insertion in model container [2024-10-31 15:04:48,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 03:04:48" (3/3) ... [2024-10-31 15:04:48,806 INFO L112 eAbstractionObserver]: Analyzing ICFG sum02-2.c [2024-10-31 15:04:48,819 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 15:04:48,819 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 15:04:48,862 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 15:04:48,868 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;@14fdd3a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 15:04:48,869 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 15:04:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 15:04:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 15:04:48,878 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:04:48,879 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:04:48,881 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:04:48,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:04:48,887 INFO L85 PathProgramCache]: Analyzing trace with hash 119658891, now seen corresponding path program 1 times [2024-10-31 15:04:48,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:04:48,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802229614] [2024-10-31 15:04:48,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:04:48,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:04:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:04:49,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 15:04:49,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:04:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:04:49,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:04:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:04:49,072 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:04:49,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802229614] [2024-10-31 15:04:49,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [802229614] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:04:49,073 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:04:49,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-10-31 15:04:49,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311573472] [2024-10-31 15:04:49,075 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:04:49,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 15:04:49,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:04:49,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 15:04:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 15:04:49,096 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-10-31 15:04:49,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:04:49,105 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-10-31 15:04:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 15:04:49,107 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-31 15:04:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:04:49,114 INFO L225 Difference]: With dead ends: 25 [2024-10-31 15:04:49,114 INFO L226 Difference]: Without dead ends: 10 [2024-10-31 15:04:49,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 15:04:49,119 INFO L432 NwaCegarLoop]: 14 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, 14 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 [2024-10-31 15:04:49,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 15:04:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-10-31 15:04:49,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-10-31 15:04:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 15:04:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2024-10-31 15:04:49,143 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2024-10-31 15:04:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:04:49,143 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2024-10-31 15:04:49,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-10-31 15:04:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2024-10-31 15:04:49,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 15:04:49,144 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:04:49,144 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:04:49,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 15:04:49,145 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:04:49,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:04:49,146 INFO L85 PathProgramCache]: Analyzing trace with hash 176738447, now seen corresponding path program 1 times [2024-10-31 15:04:49,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:04:49,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243630026] [2024-10-31 15:04:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:04:49,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:04:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:04:49,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 15:04:49,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:04:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:04:49,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:04:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:04:49,461 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:04:49,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243630026] [2024-10-31 15:04:49,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [243630026] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 15:04:49,462 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 15:04:49,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-10-31 15:04:49,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135148800] [2024-10-31 15:04:49,462 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 15:04:49,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 15:04:49,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:04:49,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 15:04:49,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-31 15:04:49,465 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2024-10-31 15:04:49,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:04:49,561 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2024-10-31 15:04:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 15:04:49,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 8 [2024-10-31 15:04:49,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:04:49,562 INFO L225 Difference]: With dead ends: 15 [2024-10-31 15:04:49,562 INFO L226 Difference]: Without dead ends: 11 [2024-10-31 15:04:49,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-31 15:04:49,564 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 15:04:49,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 15:04:49,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-10-31 15:04:49,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-10-31 15:04:49,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2024-10-31 15:04:49,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2024-10-31 15:04:49,568 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2024-10-31 15:04:49,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:04:49,568 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2024-10-31 15:04:49,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2024-10-31 15:04:49,569 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2024-10-31 15:04:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-31 15:04:49,569 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:04:49,569 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:04:49,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 15:04:49,570 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:04:49,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:04:49,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1899811727, now seen corresponding path program 1 times [2024-10-31 15:04:49,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:04:49,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505567248] [2024-10-31 15:04:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:04:49,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:04:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 15:04:49,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 15:04:49,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 15:04:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:04:49,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 15:04:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 15:04:49,977 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 15:04:49,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505567248] [2024-10-31 15:04:49,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [505567248] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 15:04:49,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 15:04:49,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2024-10-31 15:04:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927628211] [2024-10-31 15:04:49,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 15:04:49,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 15:04:49,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 15:04:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 15:04:49,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-31 15:04:49,984 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2024-10-31 15:04:50,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 15:04:50,092 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2024-10-31 15:04:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 15:04:50,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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 10 [2024-10-31 15:04:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 15:04:50,094 INFO L225 Difference]: With dead ends: 17 [2024-10-31 15:04:50,094 INFO L226 Difference]: Without dead ends: 13 [2024-10-31 15:04:50,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-31 15:04:50,096 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 15:04:50,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 15:04:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-31 15:04:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-31 15:04:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2024-10-31 15:04:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2024-10-31 15:04:50,105 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2024-10-31 15:04:50,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 15:04:50,105 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2024-10-31 15:04:50,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2024-10-31 15:04:50,106 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2024-10-31 15:04:50,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 15:04:50,106 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 15:04:50,107 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 15:04:50,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 15:04:50,107 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 15:04:50,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 15:04:50,110 INFO L85 PathProgramCache]: Analyzing trace with hash -304736301, now seen corresponding path program 2 times [2024-10-31 15:04:50,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 15:04:50,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95086494] [2024-10-31 15:04:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 15:04:50,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 15:04:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-31 15:04:50,204 WARN L124 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2024-10-31 15:04:50,204 INFO L325 BasicCegarLoop]: Counterexample might be feasible [2024-10-31 15:04:50,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 15:04:50,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 15:04:50,214 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-31 15:04:50,225 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 15:04:50,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 03:04:50 BoogieIcfgContainer [2024-10-31 15:04:50,228 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 15:04:50,229 INFO L158 Benchmark]: Toolchain (without parser) took 2090.15ms. Allocated memory was 185.6MB in the beginning and 223.3MB in the end (delta: 37.7MB). Free memory was 160.3MB in the beginning and 172.1MB in the end (delta: -11.9MB). Peak memory consumption was 26.4MB. Max. memory is 8.0GB. [2024-10-31 15:04:50,229 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 162.0MB. There was no memory consumed. Max. memory is 8.0GB. [2024-10-31 15:04:50,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.91ms. Allocated memory is still 185.6MB. Free memory was 159.7MB in the beginning and 147.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2024-10-31 15:04:50,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.24ms. Allocated memory is still 185.6MB. Free memory was 147.1MB in the beginning and 146.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2024-10-31 15:04:50,231 INFO L158 Benchmark]: Boogie Preprocessor took 45.78ms. Allocated memory is still 185.6MB. Free memory was 146.0MB in the beginning and 144.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-10-31 15:04:50,231 INFO L158 Benchmark]: RCFGBuilder took 334.97ms. Allocated memory is still 185.6MB. Free memory was 144.0MB in the beginning and 133.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2024-10-31 15:04:50,234 INFO L158 Benchmark]: TraceAbstraction took 1429.08ms. Allocated memory was 185.6MB in the beginning and 223.3MB in the end (delta: 37.7MB). Free memory was 132.5MB in the beginning and 172.1MB in the end (delta: -39.7MB). There was no memory consumed. Max. memory is 8.0GB. [2024-10-31 15:04:50,236 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 162.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 244.91ms. Allocated memory is still 185.6MB. Free memory was 159.7MB in the beginning and 147.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.24ms. Allocated memory is still 185.6MB. Free memory was 147.1MB in the beginning and 146.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.78ms. Allocated memory is still 185.6MB. Free memory was 146.0MB in the beginning and 144.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 334.97ms. Allocated memory is still 185.6MB. Free memory was 144.0MB in the beginning and 133.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1429.08ms. Allocated memory was 185.6MB in the beginning and 223.3MB in the end (delta: 37.7MB). Free memory was 132.5MB in the beginning and 172.1MB in the end (delta: -39.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L25] unsigned int i, n=__VERIFIER_nondet_uint(); [L25] unsigned int i, n=__VERIFIER_nondet_uint(); [L26] unsigned long long sn=0; [L29] CALL assume_abort_if_not(n < 4294967296U) [L14] COND FALSE !(!cond) [L29] RET assume_abort_if_not(n < 4294967296U) [L30] i=0 [L30] COND TRUE i<=n [L31] sn = sn + i [L30] i++ [L30] COND TRUE i<=n [L31] sn = sn + i [L30] i++ [L30] COND FALSE !(i<=n) [L34] unsigned long long nl = n; [L35] unsigned long long gauss = (nl*(nl+1U))/2U; [L36] CALL __VERIFIER_assert(sn==gauss || sn == 0) [L18] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 27 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 4 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-31 15:04:50,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...