/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 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.twocount32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 09:51:47,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 09:51:47,872 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 09:51:47,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 09:51:47,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 09:51:47,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 09:51:47,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 09:51:47,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 09:51:47,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 09:51:47,925 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 09:51:47,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 09:51:47,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 09:51:47,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 09:51:47,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 09:51:47,927 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 09:51:47,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 09:51:47,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 09:51:47,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 09:51:47,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 09:51:47,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 09:51:47,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 09:51:47,932 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 09:51:47,932 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 09:51:47,933 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 09:51:47,933 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 09:51:47,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 09:51:47,933 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 09:51:47,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 09:51:47,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 09:51:47,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 09:51:47,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 09:51:47,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 09:51:47,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 09:51:47,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 09:51:47,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 09:51:47,936 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 09:51:47,936 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 09:51:47,937 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 09:51:47,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 09:51:47,937 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 09:51:47,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 09:51:47,938 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 09:51:47,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-01 09:51:48,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 09:51:48,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 09:51:48,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 09:51:48,291 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 09:51:48,291 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 09:51:48,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2024-11-01 09:51:49,780 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 09:51:49,972 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 09:51:49,973 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2024-11-01 09:51:49,979 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a21b9992/a696458ed4174f5aa2c665b83ff358f7/FLAG28b40ea7e [2024-11-01 09:51:49,990 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a21b9992/a696458ed4174f5aa2c665b83ff358f7 [2024-11-01 09:51:49,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 09:51:49,993 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 09:51:49,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 09:51:49,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 09:51:49,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 09:51:49,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:51:49" (1/1) ... [2024-11-01 09:51:50,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b130f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:49, skipping insertion in model container [2024-11-01 09:51:50,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:51:49" (1/1) ... [2024-11-01 09:51:50,020 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 09:51:50,190 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.twocount32.c[1260,1273] [2024-11-01 09:51:50,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 09:51:50,241 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 09:51:50,251 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.twocount32.c[1260,1273] [2024-11-01 09:51:50,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 09:51:50,291 INFO L204 MainTranslator]: Completed translation [2024-11-01 09:51:50,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50 WrapperNode [2024-11-01 09:51:50,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 09:51:50,294 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 09:51:50,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 09:51:50,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 09:51:50,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,330 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2024-11-01 09:51:50,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 09:51:50,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 09:51:50,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 09:51:50,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 09:51:50,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,344 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,359 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 09:51:50,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,377 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,382 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 09:51:50,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 09:51:50,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 09:51:50,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 09:51:50,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (1/1) ... [2024-11-01 09:51:50,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 09:51:50,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 09:51:50,417 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 09:51:50,421 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 09:51:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 09:51:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 09:51:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 09:51:50,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 09:51:50,528 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 09:51:50,530 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 09:51:50,688 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-01 09:51:50,688 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 09:51:50,701 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 09:51:50,701 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 09:51:50,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:51:50 BoogieIcfgContainer [2024-11-01 09:51:50,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 09:51:50,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 09:51:50,705 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 09:51:50,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 09:51:50,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 09:51:49" (1/3) ... [2024-11-01 09:51:50,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f06e2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:51:50, skipping insertion in model container [2024-11-01 09:51:50,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:51:50" (2/3) ... [2024-11-01 09:51:50,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f06e2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:51:50, skipping insertion in model container [2024-11-01 09:51:50,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:51:50" (3/3) ... [2024-11-01 09:51:50,712 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount32.c [2024-11-01 09:51:50,729 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 09:51:50,729 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 09:51:50,782 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 09:51:50,789 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;@89a625e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 09:51:50,789 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 09:51:50,793 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 09:51:50,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-01 09:51:50,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:51:50,800 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-01 09:51:50,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:51:50,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:51:50,807 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-01 09:51:50,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:51:50,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298809292] [2024-11-01 09:51:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:51:50,815 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:51:50,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:51:50,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 09:51:50,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-01 09:51:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:51:50,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-01 09:51:50,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:51:51,156 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 09:51:51,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:51:51,278 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 09:51:51,279 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 09:51:51,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298809292] [2024-11-01 09:51:51,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [298809292] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 09:51:51,279 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 09:51:51,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 09:51:51,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600701662] [2024-11-01 09:51:51,282 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 09:51:51,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 09:51:51,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 09:51:51,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 09:51:51,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 09:51:51,310 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 09:51:51,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 09:51:51,372 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-01 09:51:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 09:51:51,376 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 09:51:51,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 09:51:51,381 INFO L225 Difference]: With dead ends: 18 [2024-11-01 09:51:51,381 INFO L226 Difference]: Without dead ends: 10 [2024-11-01 09:51:51,383 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 09:51:51,386 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 09:51:51,387 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 09:51:51,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-01 09:51:51,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-01 09:51:51,409 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 09:51:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-01 09:51:51,411 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-01 09:51:51,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 09:51:51,411 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-01 09:51:51,412 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 09:51:51,412 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-01 09:51:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-01 09:51:51,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:51:51,412 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-01 09:51:51,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-01 09:51:51,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 09:51:51,614 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:51:51,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:51:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-01 09:51:51,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:51:51,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980010959] [2024-11-01 09:51:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:51:51,615 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:51:51,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:51:51,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 09:51:51,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-01 09:51:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:51:51,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-01 09:51:51,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:51:51,955 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 09:51:51,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:51:52,170 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 09:51:52,170 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 09:51:52,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980010959] [2024-11-01 09:51:52,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1980010959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 09:51:52,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 09:51:52,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 09:51:52,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307305088] [2024-11-01 09:51:52,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 09:51:52,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 09:51:52,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 09:51:52,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 09:51:52,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-01 09:51:52,174 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 09:51:52,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 09:51:52,428 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-11-01 09:51:52,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 09:51:52,429 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 09:51:52,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 09:51:52,430 INFO L225 Difference]: With dead ends: 18 [2024-11-01 09:51:52,430 INFO L226 Difference]: Without dead ends: 16 [2024-11-01 09:51:52,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-01 09:51:52,431 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 09:51:52,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 11 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 09:51:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-01 09:51:52,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-01 09:51:52,436 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 09:51:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-01 09:51:52,437 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2024-11-01 09:51:52,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 09:51:52,437 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-01 09:51:52,437 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 09:51:52,438 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-01 09:51:52,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-01 09:51:52,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:51:52,440 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2024-11-01 09:51:52,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-01 09:51:52,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 09:51:52,643 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:51:52,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:51:52,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 2 times [2024-11-01 09:51:52,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:51:52,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596963436] [2024-11-01 09:51:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:51:52,645 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:51:52,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:51:52,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 09:51:52,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-01 09:51:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:51:52,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-01 09:51:52,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:51:54,093 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 09:51:54,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:51:59,254 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 09:51:59,254 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 09:51:59,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596963436] [2024-11-01 09:51:59,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [596963436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 09:51:59,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 09:51:59,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-01 09:51:59,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683545387] [2024-11-01 09:51:59,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 09:51:59,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-01 09:51:59,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 09:51:59,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-01 09:51:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-01 09:51:59,257 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 09:52:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 09:52:00,188 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2024-11-01 09:52:00,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-01 09:52:00,188 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 09:52:00,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 09:52:00,189 INFO L225 Difference]: With dead ends: 27 [2024-11-01 09:52:00,189 INFO L226 Difference]: Without dead ends: 25 [2024-11-01 09:52:00,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2024-11-01 09:52:00,191 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-01 09:52:00,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-01 09:52:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-01 09:52:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-01 09:52:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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 09:52:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-11-01 09:52:00,205 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2024-11-01 09:52:00,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 09:52:00,205 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-11-01 09:52:00,205 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 09:52:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-11-01 09:52:00,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 09:52:00,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:52:00,206 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2024-11-01 09:52:00,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-01 09:52:00,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 09:52:00,407 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:52:00,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:52:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1845955269, now seen corresponding path program 3 times [2024-11-01 09:52:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:52:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677475220] [2024-11-01 09:52:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:52:00,409 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:52:00,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:52:00,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 09:52:00,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-01 09:52:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-01 09:52:00,586 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-01 09:52:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-01 09:52:00,785 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-01 09:52:00,785 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-01 09:52:00,786 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-01 09:52:00,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-01 09:52:00,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 09:52:00,998 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-01 09:52:01,030 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-01 09:52:01,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.11 09:52:01 BoogieIcfgContainer [2024-11-01 09:52:01,033 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-01 09:52:01,034 INFO L158 Benchmark]: Toolchain (without parser) took 11040.87ms. Allocated memory was 205.5MB in the beginning and 284.2MB in the end (delta: 78.6MB). Free memory was 170.3MB in the beginning and 240.4MB in the end (delta: -70.1MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2024-11-01 09:52:01,034 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 205.5MB. Free memory is still 182.8MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-01 09:52:01,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.45ms. Allocated memory is still 205.5MB. Free memory was 169.7MB in the beginning and 155.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2024-11-01 09:52:01,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.79ms. Allocated memory is still 205.5MB. Free memory was 155.5MB in the beginning and 154.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2024-11-01 09:52:01,035 INFO L158 Benchmark]: Boogie Preprocessor took 50.66ms. Allocated memory is still 205.5MB. Free memory was 154.0MB in the beginning and 151.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-01 09:52:01,035 INFO L158 Benchmark]: RCFGBuilder took 318.51ms. Allocated memory is still 205.5MB. Free memory was 151.9MB in the beginning and 138.8MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2024-11-01 09:52:01,035 INFO L158 Benchmark]: TraceAbstraction took 10328.73ms. Allocated memory was 205.5MB in the beginning and 284.2MB in the end (delta: 78.6MB). Free memory was 138.3MB in the beginning and 240.4MB in the end (delta: -102.1MB). There was no memory consumed. Max. memory is 8.0GB. [2024-11-01 09:52:01,037 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 205.5MB. Free memory is still 182.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.45ms. Allocated memory is still 205.5MB. Free memory was 169.7MB in the beginning and 155.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.79ms. Allocated memory is still 205.5MB. Free memory was 155.5MB in the beginning and 154.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.66ms. Allocated memory is still 205.5MB. Free memory was 154.0MB in the beginning and 151.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 318.51ms. Allocated memory is still 205.5MB. Free memory was 151.9MB in the beginning and 138.8MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 10328.73ms. Allocated memory was 205.5MB in the beginning and 284.2MB in the end (delta: 78.6MB). Free memory was 138.3MB in the beginning and 240.4MB in the end (delta: -102.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 - 1); [L28] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L30] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 32); [L31] const SORT_2 msb_SORT_2 = (SORT_2)1 << (32 - 1); [L33] const SORT_2 var_4 = 0; [L34] const SORT_2 var_9 = 1; [L35] const SORT_2 var_16 = 3; [L37] SORT_1 input_3; [L39] SORT_2 state_5 = __VERIFIER_nondet_uint() & mask_SORT_2; [L40] SORT_2 state_6 = __VERIFIER_nondet_uint() & mask_SORT_2; [L42] SORT_2 init_7_arg_1 = var_4; [L43] state_5 = init_7_arg_1 [L44] SORT_2 init_8_arg_1 = var_4; [L45] state_6 = init_8_arg_1 VAL [mask_SORT_1=1, mask_SORT_2=-1, state_5=0, state_6=0, var_16=3, var_9=1] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L52] SORT_2 var_17_arg_0 = state_5; [L53] SORT_2 var_17_arg_1 = var_16; [L54] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L55] SORT_2 var_18_arg_0 = state_6; [L56] SORT_2 var_18_arg_1 = var_16; [L57] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L58] SORT_1 var_19_arg_0 = var_17; [L59] SORT_1 var_19_arg_1 = var_18; [L60] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L61] var_19 = var_19 & mask_SORT_1 [L62] SORT_1 bad_20_arg_0 = var_19; [L63] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L22] COND FALSE !(!(cond)) [L63] RET __VERIFIER_assert(!(bad_20_arg_0)) [L65] SORT_2 var_10_arg_0 = state_5; [L66] SORT_2 var_10_arg_1 = var_9; [L67] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L68] SORT_1 var_12_arg_0 = input_3; [L69] SORT_2 var_12_arg_1 = state_5; [L70] SORT_2 var_12_arg_2 = var_10; [L71] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L72] var_12 = var_12 & mask_SORT_2 [L73] SORT_2 next_14_arg_1 = var_12; [L74] SORT_2 var_11_arg_0 = state_6; [L75] SORT_2 var_11_arg_1 = var_9; [L76] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L77] SORT_1 var_13_arg_0 = ~input_3; [L78] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L79] SORT_2 var_13_arg_1 = state_6; [L80] SORT_2 var_13_arg_2 = var_11; [L81] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L82] var_13 = var_13 & mask_SORT_2 [L83] SORT_2 next_15_arg_1 = var_13; [L85] state_5 = next_14_arg_1 [L86] state_6 = next_15_arg_1 [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L52] SORT_2 var_17_arg_0 = state_5; [L53] SORT_2 var_17_arg_1 = var_16; [L54] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L55] SORT_2 var_18_arg_0 = state_6; [L56] SORT_2 var_18_arg_1 = var_16; [L57] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L58] SORT_1 var_19_arg_0 = var_17; [L59] SORT_1 var_19_arg_1 = var_18; [L60] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L61] var_19 = var_19 & mask_SORT_1 [L62] SORT_1 bad_20_arg_0 = var_19; [L63] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L22] COND FALSE !(!(cond)) [L63] RET __VERIFIER_assert(!(bad_20_arg_0)) [L65] SORT_2 var_10_arg_0 = state_5; [L66] SORT_2 var_10_arg_1 = var_9; [L67] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L68] SORT_1 var_12_arg_0 = input_3; [L69] SORT_2 var_12_arg_1 = state_5; [L70] SORT_2 var_12_arg_2 = var_10; [L71] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L72] var_12 = var_12 & mask_SORT_2 [L73] SORT_2 next_14_arg_1 = var_12; [L74] SORT_2 var_11_arg_0 = state_6; [L75] SORT_2 var_11_arg_1 = var_9; [L76] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L77] SORT_1 var_13_arg_0 = ~input_3; [L78] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L79] SORT_2 var_13_arg_1 = state_6; [L80] SORT_2 var_13_arg_2 = var_11; [L81] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L82] var_13 = var_13 & mask_SORT_2 [L83] SORT_2 next_15_arg_1 = var_13; [L85] state_5 = next_14_arg_1 [L86] state_6 = next_15_arg_1 [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L52] SORT_2 var_17_arg_0 = state_5; [L53] SORT_2 var_17_arg_1 = var_16; [L54] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L55] SORT_2 var_18_arg_0 = state_6; [L56] SORT_2 var_18_arg_1 = var_16; [L57] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L58] SORT_1 var_19_arg_0 = var_17; [L59] SORT_1 var_19_arg_1 = var_18; [L60] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L61] var_19 = var_19 & mask_SORT_1 [L62] SORT_1 bad_20_arg_0 = var_19; [L63] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L22] COND FALSE !(!(cond)) [L63] RET __VERIFIER_assert(!(bad_20_arg_0)) [L65] SORT_2 var_10_arg_0 = state_5; [L66] SORT_2 var_10_arg_1 = var_9; [L67] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L68] SORT_1 var_12_arg_0 = input_3; [L69] SORT_2 var_12_arg_1 = state_5; [L70] SORT_2 var_12_arg_2 = var_10; [L71] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L72] var_12 = var_12 & mask_SORT_2 [L73] SORT_2 next_14_arg_1 = var_12; [L74] SORT_2 var_11_arg_0 = state_6; [L75] SORT_2 var_11_arg_1 = var_9; [L76] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L77] SORT_1 var_13_arg_0 = ~input_3; [L78] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L79] SORT_2 var_13_arg_1 = state_6; [L80] SORT_2 var_13_arg_2 = var_11; [L81] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L82] var_13 = var_13 & mask_SORT_2 [L83] SORT_2 next_15_arg_1 = var_13; [L85] state_5 = next_14_arg_1 [L86] state_6 = next_15_arg_1 [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L52] SORT_2 var_17_arg_0 = state_5; [L53] SORT_2 var_17_arg_1 = var_16; [L54] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L55] SORT_2 var_18_arg_0 = state_6; [L56] SORT_2 var_18_arg_1 = var_16; [L57] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L58] SORT_1 var_19_arg_0 = var_17; [L59] SORT_1 var_19_arg_1 = var_18; [L60] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L61] var_19 = var_19 & mask_SORT_1 [L62] SORT_1 bad_20_arg_0 = var_19; [L63] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L22] COND FALSE !(!(cond)) [L63] RET __VERIFIER_assert(!(bad_20_arg_0)) [L65] SORT_2 var_10_arg_0 = state_5; [L66] SORT_2 var_10_arg_1 = var_9; [L67] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L68] SORT_1 var_12_arg_0 = input_3; [L69] SORT_2 var_12_arg_1 = state_5; [L70] SORT_2 var_12_arg_2 = var_10; [L71] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L72] var_12 = var_12 & mask_SORT_2 [L73] SORT_2 next_14_arg_1 = var_12; [L74] SORT_2 var_11_arg_0 = state_6; [L75] SORT_2 var_11_arg_1 = var_9; [L76] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L77] SORT_1 var_13_arg_0 = ~input_3; [L78] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L79] SORT_2 var_13_arg_1 = state_6; [L80] SORT_2 var_13_arg_2 = var_11; [L81] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L82] var_13 = var_13 & mask_SORT_2 [L83] SORT_2 next_15_arg_1 = var_13; [L85] state_5 = next_14_arg_1 [L86] state_6 = next_15_arg_1 [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L52] SORT_2 var_17_arg_0 = state_5; [L53] SORT_2 var_17_arg_1 = var_16; [L54] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L55] SORT_2 var_18_arg_0 = state_6; [L56] SORT_2 var_18_arg_1 = var_16; [L57] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L58] SORT_1 var_19_arg_0 = var_17; [L59] SORT_1 var_19_arg_1 = var_18; [L60] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L61] var_19 = var_19 & mask_SORT_1 [L62] SORT_1 bad_20_arg_0 = var_19; [L63] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L22] COND FALSE !(!(cond)) [L63] RET __VERIFIER_assert(!(bad_20_arg_0)) [L65] SORT_2 var_10_arg_0 = state_5; [L66] SORT_2 var_10_arg_1 = var_9; [L67] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L68] SORT_1 var_12_arg_0 = input_3; [L69] SORT_2 var_12_arg_1 = state_5; [L70] SORT_2 var_12_arg_2 = var_10; [L71] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L72] var_12 = var_12 & mask_SORT_2 [L73] SORT_2 next_14_arg_1 = var_12; [L74] SORT_2 var_11_arg_0 = state_6; [L75] SORT_2 var_11_arg_1 = var_9; [L76] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L77] SORT_1 var_13_arg_0 = ~input_3; [L78] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L79] SORT_2 var_13_arg_1 = state_6; [L80] SORT_2 var_13_arg_2 = var_11; [L81] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L82] var_13 = var_13 & mask_SORT_2 [L83] SORT_2 next_15_arg_1 = var_13; [L85] state_5 = next_14_arg_1 [L86] state_6 = next_15_arg_1 [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L52] SORT_2 var_17_arg_0 = state_5; [L53] SORT_2 var_17_arg_1 = var_16; [L54] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L55] SORT_2 var_18_arg_0 = state_6; [L56] SORT_2 var_18_arg_1 = var_16; [L57] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L58] SORT_1 var_19_arg_0 = var_17; [L59] SORT_1 var_19_arg_1 = var_18; [L60] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L61] var_19 = var_19 & mask_SORT_1 [L62] SORT_1 bad_20_arg_0 = var_19; [L63] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L22] COND FALSE !(!(cond)) [L63] RET __VERIFIER_assert(!(bad_20_arg_0)) [L65] SORT_2 var_10_arg_0 = state_5; [L66] SORT_2 var_10_arg_1 = var_9; [L67] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L68] SORT_1 var_12_arg_0 = input_3; [L69] SORT_2 var_12_arg_1 = state_5; [L70] SORT_2 var_12_arg_2 = var_10; [L71] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; [L72] var_12 = var_12 & mask_SORT_2 [L73] SORT_2 next_14_arg_1 = var_12; [L74] SORT_2 var_11_arg_0 = state_6; [L75] SORT_2 var_11_arg_1 = var_9; [L76] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L77] SORT_1 var_13_arg_0 = ~input_3; [L78] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L79] SORT_2 var_13_arg_1 = state_6; [L80] SORT_2 var_13_arg_2 = var_11; [L81] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; [L82] var_13 = var_13 & mask_SORT_2 [L83] SORT_2 next_15_arg_1 = var_13; [L85] state_5 = next_14_arg_1 [L86] state_6 = next_15_arg_1 [L48] input_3 = __VERIFIER_nondet_uchar() [L49] input_3 = input_3 & mask_SORT_1 [L52] SORT_2 var_17_arg_0 = state_5; [L53] SORT_2 var_17_arg_1 = var_16; [L54] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L55] SORT_2 var_18_arg_0 = state_6; [L56] SORT_2 var_18_arg_1 = var_16; [L57] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L58] SORT_1 var_19_arg_0 = var_17; [L59] SORT_1 var_19_arg_1 = var_18; [L60] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L61] var_19 = var_19 & mask_SORT_1 [L62] SORT_1 bad_20_arg_0 = var_19; [L63] CALL __VERIFIER_assert(!(bad_20_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: 10.2s, OverallIterations: 4, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 12 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, InterpolantAutomatonStates: 26, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 15 QuantifiedInterpolants, 3937 SizeOfPredicates, 19 NumberOfNonLiveVariables, 178 ConjunctsInSsa, 58 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 09:52:01,072 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...