/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.count2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 21:25:39,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 21:25:39,584 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 21:25:39,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 21:25:39,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 21:25:39,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 21:25:39,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 21:25:39,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 21:25:39,627 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 21:25:39,627 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 21:25:39,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 21:25:39,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 21:25:39,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 21:25:39,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 21:25:39,631 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 21:25:39,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 21:25:39,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 21:25:39,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 21:25:39,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 21:25:39,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 21:25:39,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 21:25:39,637 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 21:25:39,637 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 21:25:39,637 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 21:25:39,637 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 21:25:39,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 21:25:39,638 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 21:25:39,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 21:25:39,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 21:25:39,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 21:25:39,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 21:25:39,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 21:25:39,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 21:25:39,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 21:25:39,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 21:25:39,640 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 21:25:39,642 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 21:25:39,642 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 21:25:39,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 21:25:39,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 21:25:39,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 21:25:39,643 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 21:25:39,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-01 21:25:40,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 21:25:40,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 21:25:40,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 21:25:40,032 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 21:25:40,032 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 21:25:40,034 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.count2.c [2024-11-01 21:25:41,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 21:25:41,819 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 21:25:41,819 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.count2.c [2024-11-01 21:25:41,826 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/698cd7c29/1fc9f0ee17754fc49173406faaef7151/FLAG1da375986 [2024-11-01 21:25:41,839 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/698cd7c29/1fc9f0ee17754fc49173406faaef7151 [2024-11-01 21:25:41,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 21:25:41,843 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 21:25:41,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 21:25:41,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 21:25:41,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 21:25:41,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:25:41" (1/1) ... [2024-11-01 21:25:41,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:41, skipping insertion in model container [2024-11-01 21:25:41,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:25:41" (1/1) ... [2024-11-01 21:25:41,871 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 21:25:42,028 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.count2.c[1256,1269] [2024-11-01 21:25:42,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 21:25:42,066 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 21:25:42,080 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.count2.c[1256,1269] [2024-11-01 21:25:42,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 21:25:42,117 INFO L204 MainTranslator]: Completed translation [2024-11-01 21:25:42,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42 WrapperNode [2024-11-01 21:25:42,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 21:25:42,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 21:25:42,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 21:25:42,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 21:25:42,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,152 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2024-11-01 21:25:42,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 21:25:42,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 21:25:42,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 21:25:42,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 21:25:42,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,167 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,182 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 21:25:42,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 21:25:42,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 21:25:42,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 21:25:42,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 21:25:42,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (1/1) ... [2024-11-01 21:25:42,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 21:25:42,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 21:25:42,231 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 21:25:42,235 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 21:25:42,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 21:25:42,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 21:25:42,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 21:25:42,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 21:25:42,318 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 21:25:42,320 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 21:25:42,444 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-01 21:25:42,445 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 21:25:42,454 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 21:25:42,454 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 21:25:42,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:25:42 BoogieIcfgContainer [2024-11-01 21:25:42,455 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 21:25:42,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 21:25:42,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 21:25:42,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 21:25:42,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 09:25:41" (1/3) ... [2024-11-01 21:25:42,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571a2844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:25:42, skipping insertion in model container [2024-11-01 21:25:42,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:25:42" (2/3) ... [2024-11-01 21:25:42,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571a2844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:25:42, skipping insertion in model container [2024-11-01 21:25:42,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:25:42" (3/3) ... [2024-11-01 21:25:42,463 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.count2.c [2024-11-01 21:25:42,483 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 21:25:42,484 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 21:25:42,530 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 21:25:42,540 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;@66e6f0cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 21:25:42,540 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 21:25:42,546 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 21:25:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-01 21:25:42,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 21:25:42,552 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-01 21:25:42,553 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 21:25:42,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 21:25:42,558 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-01 21:25:42,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 21:25:42,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171661031] [2024-11-01 21:25:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 21:25:42,567 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 21:25:42,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 21:25:42,569 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 21:25:42,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-01 21:25:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 21:25:42,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-01 21:25:42,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 21:25:42,785 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 21:25:42,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 21:25:42,887 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 21:25:42,888 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 21:25:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171661031] [2024-11-01 21:25:42,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1171661031] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 21:25:42,890 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 21:25:42,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 21:25:42,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132866210] [2024-11-01 21:25:42,895 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 21:25:42,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 21:25:42,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 21:25:42,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 21:25:42,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 21:25:42,924 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 21:25:42,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 21:25:42,976 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-01 21:25:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 21:25:42,980 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 21:25:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 21:25:42,985 INFO L225 Difference]: With dead ends: 18 [2024-11-01 21:25:42,985 INFO L226 Difference]: Without dead ends: 10 [2024-11-01 21:25:42,987 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 21:25:42,991 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 21:25:42,992 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 21:25:43,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-01 21:25:43,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-01 21:25:43,019 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 21:25:43,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-01 21:25:43,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-01 21:25:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 21:25:43,022 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-01 21:25:43,022 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 21:25:43,022 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-01 21:25:43,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-01 21:25:43,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 21:25:43,023 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-01 21:25:43,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-01 21:25:43,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 21:25:43,224 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 21:25:43,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 21:25:43,225 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-01 21:25:43,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 21:25:43,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298499833] [2024-11-01 21:25:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 21:25:43,226 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 21:25:43,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 21:25:43,228 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 21:25:43,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-01 21:25:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 21:25:43,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-01 21:25:43,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 21:25:43,384 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 21:25:43,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 21:25:43,476 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 21:25:43,477 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 21:25:43,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298499833] [2024-11-01 21:25:43,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1298499833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 21:25:43,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 21:25:43,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 21:25:43,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3548707] [2024-11-01 21:25:43,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 21:25:43,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 21:25:43,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 21:25:43,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 21:25:43,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-01 21:25:43,482 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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 21:25:43,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 21:25:43,652 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-11-01 21:25:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 21:25:43,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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 21:25:43,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 21:25:43,656 INFO L225 Difference]: With dead ends: 18 [2024-11-01 21:25:43,656 INFO L226 Difference]: Without dead ends: 16 [2024-11-01 21:25:43,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-01 21:25:43,660 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 21:25:43,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 21:25:43,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-01 21:25:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-01 21:25:43,669 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 21:25:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-01 21:25:43,670 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2024-11-01 21:25:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 21:25:43,670 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-01 21:25:43,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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 21:25:43,671 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-01 21:25:43,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-01 21:25:43,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 21:25:43,672 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2024-11-01 21:25:43,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-01 21:25:43,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 21:25:43,874 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 21:25:43,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 21:25:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 2 times [2024-11-01 21:25:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 21:25:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279983656] [2024-11-01 21:25:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 21:25:43,875 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 21:25:43,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 21:25:43,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 21:25:43,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-01 21:25:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 21:25:43,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-01 21:25:43,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 21:25:44,181 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 21:25:44,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 21:25:44,350 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 21:25:44,351 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 21:25:44,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279983656] [2024-11-01 21:25:44,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [279983656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 21:25:44,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 21:25:44,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-01 21:25:44,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259243224] [2024-11-01 21:25:44,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 21:25:44,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-01 21:25:44,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 21:25:44,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-01 21:25:44,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-01 21:25:44,358 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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 21:25:44,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 21:25:44,706 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-11-01 21:25:44,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-01 21:25:44,708 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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 21:25:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 21:25:44,709 INFO L225 Difference]: With dead ends: 30 [2024-11-01 21:25:44,709 INFO L226 Difference]: Without dead ends: 28 [2024-11-01 21:25:44,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2024-11-01 21:25:44,710 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 21:25:44,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 23 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 21:25:44,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-01 21:25:44,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-01 21:25:44,717 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 21:25:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2024-11-01 21:25:44,718 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2024-11-01 21:25:44,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 21:25:44,718 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2024-11-01 21:25:44,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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 21:25:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2024-11-01 21:25:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-01 21:25:44,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 21:25:44,719 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2024-11-01 21:25:44,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Forceful destruction successful, exit code 0 [2024-11-01 21:25:44,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 21:25:44,921 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 21:25:44,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 21:25:44,922 INFO L85 PathProgramCache]: Analyzing trace with hash 96933411, now seen corresponding path program 3 times [2024-11-01 21:25:44,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 21:25:44,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958724701] [2024-11-01 21:25:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 21:25:44,923 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 21:25:44,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 21:25:44,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 21:25:44,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-01 21:25:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-01 21:25:44,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-01 21:25:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-01 21:25:45,047 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-01 21:25:45,048 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-01 21:25:45,048 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-01 21:25:45,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-01 21:25:45,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 21:25:45,257 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-01 21:25:45,279 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-01 21:25:45,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.11 09:25:45 BoogieIcfgContainer [2024-11-01 21:25:45,281 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-01 21:25:45,282 INFO L158 Benchmark]: Toolchain (without parser) took 3439.40ms. Allocated memory was 185.6MB in the beginning and 244.3MB in the end (delta: 58.7MB). Free memory was 161.2MB in the beginning and 108.0MB in the end (delta: 53.2MB). Peak memory consumption was 112.0MB. Max. memory is 8.0GB. [2024-11-01 21:25:45,282 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 185.6MB. Free memory was 161.4MB in the beginning and 161.3MB in the end (delta: 136.2kB). There was no memory consumed. Max. memory is 8.0GB. [2024-11-01 21:25:45,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.06ms. Allocated memory is still 185.6MB. Free memory was 160.7MB in the beginning and 147.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2024-11-01 21:25:45,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.44ms. Allocated memory is still 185.6MB. Free memory was 147.6MB in the beginning and 146.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-01 21:25:45,283 INFO L158 Benchmark]: Boogie Preprocessor took 41.20ms. Allocated memory is still 185.6MB. Free memory was 146.0MB in the beginning and 144.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2024-11-01 21:25:45,284 INFO L158 Benchmark]: RCFGBuilder took 255.53ms. Allocated memory is still 185.6MB. Free memory was 144.5MB in the beginning and 133.5MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2024-11-01 21:25:45,284 INFO L158 Benchmark]: TraceAbstraction took 2824.58ms. Allocated memory was 185.6MB in the beginning and 244.3MB in the end (delta: 58.7MB). Free memory was 132.4MB in the beginning and 108.0MB in the end (delta: 24.4MB). Peak memory consumption was 82.6MB. Max. memory is 8.0GB. [2024-11-01 21:25:45,286 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 185.6MB. Free memory was 161.4MB in the beginning and 161.3MB in the end (delta: 136.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 276.06ms. Allocated memory is still 185.6MB. Free memory was 160.7MB in the beginning and 147.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.44ms. Allocated memory is still 185.6MB. Free memory was 147.6MB in the beginning and 146.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.20ms. Allocated memory is still 185.6MB. Free memory was 146.0MB in the beginning and 144.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 255.53ms. Allocated memory is still 185.6MB. Free memory was 144.5MB in the beginning and 133.5MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2824.58ms. Allocated memory was 185.6MB in the beginning and 244.3MB in the end (delta: 58.7MB). Free memory was 132.4MB in the beginning and 108.0MB in the end (delta: 24.4MB). Peak memory consumption was 82.6MB. 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 - CounterExampleResult [Line: 22]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L27] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 3); [L28] const SORT_1 msb_SORT_1 = (SORT_1)1 << (3 - 1); [L30] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 1); [L31] const SORT_9 msb_SORT_9 = (SORT_9)1 << (1 - 1); [L33] const SORT_1 var_2 = 0; [L34] const SORT_1 var_5 = 1; [L35] const SORT_1 var_8 = mask_SORT_1; [L38] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L40] SORT_1 init_4_arg_1 = var_2; [L41] state_3 = init_4_arg_1 VAL [mask_SORT_1=7, state_3=0, var_5=1, var_8=7] [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND TRUE !(cond) [L22] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121 IncrementalHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 12 mSDtfsCounter, 121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, InterpolantAutomatonStates: 28, 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, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 510 SizeOfPredicates, 11 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/34 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 proved your program to be incorrect! [2024-11-01 21:25:45,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...