/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 22:17:46,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 22:17:46,504 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 22:17:46,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 22:17:46,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 22:17:46,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 22:17:46,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 22:17:46,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 22:17:46,538 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 22:17:46,539 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 22:17:46,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 22:17:46,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 22:17:46,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 22:17:46,540 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 22:17:46,541 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 22:17:46,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 22:17:46,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 22:17:46,542 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 22:17:46,542 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 22:17:46,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 22:17:46,543 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 22:17:46,543 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 22:17:46,543 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 22:17:46,544 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 22:17:46,544 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 22:17:46,544 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 22:17:46,545 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 22:17:46,545 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 22:17:46,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 22:17:46,545 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 22:17:46,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 22:17:46,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 22:17:46,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 22:17:46,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 22:17:46,551 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 22:17:46,551 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 22:17:46,551 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 22:17:46,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 22:17:46,552 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 22:17:46,552 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 22:17:46,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 22:17:46,552 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 22:17:46,553 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-01 22:17:46,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 22:17:46,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 22:17:46,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 22:17:46,885 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 22:17:46,885 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 22:17:46,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c [2024-11-01 22:17:48,294 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 22:17:48,552 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 22:17:48,553 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c [2024-11-01 22:17:48,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27d0bf14/4e40ddf6d3974ecbac78653738ba0e00/FLAGedd982feb [2024-11-01 22:17:48,579 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27d0bf14/4e40ddf6d3974ecbac78653738ba0e00 [2024-11-01 22:17:48,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 22:17:48,585 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 22:17:48,587 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 22:17:48,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 22:17:48,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 22:17:48,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 10:17:48" (1/1) ... [2024-11-01 22:17:48,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48be6494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:48, skipping insertion in model container [2024-11-01 22:17:48,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 10:17:48" (1/1) ... [2024-11-01 22:17:48,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 22:17:48,846 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.safe_analog_estimation_convergence.c[1287,1300] [2024-11-01 22:17:49,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 22:17:49,035 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 22:17:49,047 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.safe_analog_estimation_convergence.c[1287,1300] [2024-11-01 22:17:49,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 22:17:49,140 INFO L204 MainTranslator]: Completed translation [2024-11-01 22:17:49,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49 WrapperNode [2024-11-01 22:17:49,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 22:17:49,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 22:17:49,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 22:17:49,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 22:17:49,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,230 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 427 [2024-11-01 22:17:49,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 22:17:49,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 22:17:49,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 22:17:49,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 22:17:49,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,263 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 22:17:49,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 22:17:49,302 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 22:17:49,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 22:17:49,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 22:17:49,303 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (1/1) ... [2024-11-01 22:17:49,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 22:17:49,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 22:17:49,334 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 22:17:49,336 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 22:17:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 22:17:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 22:17:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 22:17:49,356 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 22:17:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 22:17:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 22:17:49,493 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 22:17:49,495 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 22:17:50,055 INFO L? ?]: Removed 178 outVars from TransFormulas that were not future-live. [2024-11-01 22:17:50,056 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 22:17:50,066 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 22:17:50,066 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 22:17:50,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 10:17:50 BoogieIcfgContainer [2024-11-01 22:17:50,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 22:17:50,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 22:17:50,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 22:17:50,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 22:17:50,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 10:17:48" (1/3) ... [2024-11-01 22:17:50,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4166067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 10:17:50, skipping insertion in model container [2024-11-01 22:17:50,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:49" (2/3) ... [2024-11-01 22:17:50,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4166067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 10:17:50, skipping insertion in model container [2024-11-01 22:17:50,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 10:17:50" (3/3) ... [2024-11-01 22:17:50,075 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_analog_estimation_convergence.c [2024-11-01 22:17:50,091 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 22:17:50,091 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 22:17:50,152 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 22:17:50,158 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;@4e64de96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 22:17:50,159 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 22:17:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-01 22:17:50,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-01 22:17:50,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 22:17:50,171 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 22:17:50,172 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 22:17:50,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 22:17:50,177 INFO L85 PathProgramCache]: Analyzing trace with hash 896107007, now seen corresponding path program 1 times [2024-11-01 22:17:50,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 22:17:50,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654089289] [2024-11-01 22:17:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 22:17:50,188 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 22:17:50,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 22:17:50,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 22:17:50,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-01 22:17:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 22:17:50,446 WARN L253 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-01 22:17:50,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 22:17:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-01 22:17:53,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 22:18:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-01 22:18:00,454 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 22:18:00,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654089289] [2024-11-01 22:18:00,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1654089289] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 22:18:00,456 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 22:18:00,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2024-11-01 22:18:00,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240843687] [2024-11-01 22:18:00,459 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 22:18:00,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 22:18:00,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 22:18:00,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 22:18:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2024-11-01 22:18:00,487 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-01 22:18:12,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-01 22:18:17,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-01 22:18:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 22:18:20,770 INFO L93 Difference]: Finished difference Result 45 states and 66 transitions. [2024-11-01 22:18:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 22:18:20,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 17 [2024-11-01 22:18:20,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 22:18:20,777 INFO L225 Difference]: With dead ends: 45 [2024-11-01 22:18:20,777 INFO L226 Difference]: Without dead ends: 29 [2024-11-01 22:18:20,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=39, Invalid=69, Unknown=2, NotChecked=0, Total=110 [2024-11-01 22:18:20,783 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2024-11-01 22:18:20,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 67 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2024-11-01 22:18:20,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-01 22:18:20,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-01 22:18:20,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-01 22:18:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-01 22:18:20,827 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2024-11-01 22:18:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 22:18:20,828 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-01 22:18:20,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-01 22:18:20,829 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-01 22:18:20,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-01 22:18:20,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 22:18:20,831 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-01 22:18:20,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-01 22:18:21,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 22:18:21,034 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 22:18:21,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 22:18:21,035 INFO L85 PathProgramCache]: Analyzing trace with hash 666109311, now seen corresponding path program 1 times [2024-11-01 22:18:21,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 22:18:21,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953702189] [2024-11-01 22:18:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 22:18:21,036 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 22:18:21,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 22:18:21,041 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 22:18:21,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-01 22:18:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 22:18:21,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 180 conjuncts are in the unsatisfiable core [2024-11-01 22:18:21,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 22:18:55,713 WARN L286 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 231 DAG size of output: 230 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-01 22:19:05,611 WARN L286 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 245 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-01 22:19:27,886 WARN L286 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)