/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 04:37:08,701 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 04:37:08,791 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 04:37:08,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 04:37:08,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 04:37:08,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 04:37:08,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 04:37:08,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 04:37:08,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 04:37:08,831 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 04:37:08,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 04:37:08,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 04:37:08,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 04:37:08,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 04:37:08,834 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 04:37:08,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 04:37:08,835 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 04:37:08,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 04:37:08,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 04:37:08,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 04:37:08,836 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 04:37:08,839 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 04:37:08,840 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 04:37:08,840 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 04:37:08,840 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 04:37:08,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 04:37:08,841 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 04:37:08,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 04:37:08,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 04:37:08,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 04:37:08,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 04:37:08,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 04:37:08,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 04:37:08,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 04:37:08,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 04:37:08,845 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 04:37:08,845 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 04:37:08,846 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 04:37:08,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 04:37:08,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 04:37:08,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 04:37:08,847 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 04:37:08,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:09,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 04:37:09,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 04:37:09,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 04:37:09,193 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 04:37:09,194 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 04:37:09,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c [2024-11-01 04:37:10,807 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 04:37:11,103 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 04:37:11,104 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c [2024-11-01 04:37:11,122 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d6b561c3/99e8238fd89d4b45821f60c5f7e145c5/FLAG9fa7ef44c [2024-11-01 04:37:11,144 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d6b561c3/99e8238fd89d4b45821f60c5f7e145c5 [2024-11-01 04:37:11,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 04:37:11,148 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 04:37:11,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 04:37:11,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 04:37:11,155 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 04:37:11,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:11,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3537ab42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11, skipping insertion in model container [2024-11-01 04:37:11,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:11,229 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 04:37:11,445 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.circular_pointer_top_w128_d32_e0.c[1335,1348] [2024-11-01 04:37:11,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 04:37:11,741 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 04:37:11,754 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.circular_pointer_top_w128_d32_e0.c[1335,1348] [2024-11-01 04:37:11,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 04:37:11,916 INFO L204 MainTranslator]: Completed translation [2024-11-01 04:37:11,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11 WrapperNode [2024-11-01 04:37:11,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 04:37:11,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 04:37:11,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 04:37:11,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 04:37:11,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:11,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:12,045 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1459 [2024-11-01 04:37:12,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 04:37:12,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 04:37:12,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 04:37:12,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 04:37:12,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:12,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:12,081 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:12,127 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 04:37:12,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:12,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:12,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:12,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:12,168 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:12,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:12,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 04:37:12,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 04:37:12,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 04:37:12,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 04:37:12,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (1/1) ... [2024-11-01 04:37:12,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 04:37:12,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:37:12,239 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 04:37:12,241 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 04:37:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 04:37:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 04:37:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 04:37:12,261 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 04:37:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 04:37:12,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 04:37:12,576 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 04:37:12,578 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 04:37:13,902 INFO L? ?]: Removed 416 outVars from TransFormulas that were not future-live. [2024-11-01 04:37:13,903 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 04:37:13,916 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 04:37:13,916 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 04:37:13,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 04:37:13 BoogieIcfgContainer [2024-11-01 04:37:13,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 04:37:13,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 04:37:13,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 04:37:13,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 04:37:13,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 04:37:11" (1/3) ... [2024-11-01 04:37:13,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c25b675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 04:37:13, skipping insertion in model container [2024-11-01 04:37:13,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:11" (2/3) ... [2024-11-01 04:37:13,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c25b675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 04:37:13, skipping insertion in model container [2024-11-01 04:37:13,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 04:37:13" (3/3) ... [2024-11-01 04:37:13,927 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c [2024-11-01 04:37:13,943 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 04:37:13,943 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 04:37:13,999 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 04:37:14,005 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;@32344837, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 04:37:14,005 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 04:37:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-01 04:37:14,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 04:37:14,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:37:14,016 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 04:37:14,016 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:37:14,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:37:14,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times [2024-11-01 04:37:14,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:37:14,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289290932] [2024-11-01 04:37:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:37:14,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:14,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:37:14,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 04:37:14,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-01 04:37:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:37:14,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 04:37:14,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:37:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-01 04:37:14,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:37:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-01 04:37:14,672 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 04:37:14,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289290932] [2024-11-01 04:37:14,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1289290932] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-01 04:37:14,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-01 04:37:14,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-01 04:37:14,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878503657] [2024-11-01 04:37:14,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-01 04:37:14,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 04:37:14,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 04:37:14,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 04:37:14,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 04:37:14,708 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-01 04:37:14,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 04:37:14,724 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-01 04:37:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 04:37:14,726 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-11-01 04:37:14,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 04:37:14,733 INFO L225 Difference]: With dead ends: 35 [2024-11-01 04:37:14,733 INFO L226 Difference]: Without dead ends: 17 [2024-11-01 04:37:14,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 04:37:14,740 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 04:37:14,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 04:37:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-01 04:37:14,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-01 04:37:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-01 04:37:14,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-01 04:37:14,774 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23 [2024-11-01 04:37:14,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 04:37:14,775 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-01 04:37:14,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-01 04:37:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-01 04:37:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 04:37:14,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:37:14,777 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 04:37:14,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-01 04:37:14,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:14,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:37:14,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:37:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times [2024-11-01 04:37:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:37:14,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160625527] [2024-11-01 04:37:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:37:14,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:14,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:37:14,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 04:37:14,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-01 04:37:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:37:15,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-01 04:37:15,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:37:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-01 04:37:15,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:37:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-01 04:37:16,192 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 04:37:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160625527] [2024-11-01 04:37:16,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [160625527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 04:37:16,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 04:37:16,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-01 04:37:16,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781775780] [2024-11-01 04:37:16,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 04:37:16,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-01 04:37:16,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 04:37:16,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-01 04:37:16,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-01 04:37:16,196 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-01 04:37:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 04:37:17,020 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-01 04:37:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-01 04:37:17,021 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2024-11-01 04:37:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 04:37:17,022 INFO L225 Difference]: With dead ends: 27 [2024-11-01 04:37:17,023 INFO L226 Difference]: Without dead ends: 25 [2024-11-01 04:37:17,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-01 04:37:17,024 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-01 04:37:17,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 53 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-01 04:37:17,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-01 04:37:17,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-01 04:37:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-01 04:37:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-01 04:37:17,036 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2024-11-01 04:37:17,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 04:37:17,037 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-01 04:37:17,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-01 04:37:17,038 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-01 04:37:17,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-01 04:37:17,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:37:17,039 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-01 04:37:17,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-01 04:37:17,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:17,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:37:17,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:37:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash 416519459, now seen corresponding path program 1 times [2024-11-01 04:37:17,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:37:17,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791126016] [2024-11-01 04:37:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:37:17,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:17,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:37:17,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 04:37:17,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-01 04:37:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:37:18,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-01 04:37:18,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:37:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-01 04:37:18,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:37:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-01 04:37:20,929 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 04:37:20,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791126016] [2024-11-01 04:37:20,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1791126016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 04:37:20,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 04:37:20,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-01 04:37:20,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896860022] [2024-11-01 04:37:20,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 04:37:20,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 04:37:20,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 04:37:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 04:37:20,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-01 04:37:20,932 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-01 04:37:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 04:37:22,400 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-01 04:37:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-01 04:37:22,401 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) Word has length 44 [2024-11-01 04:37:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 04:37:22,402 INFO L225 Difference]: With dead ends: 36 [2024-11-01 04:37:22,402 INFO L226 Difference]: Without dead ends: 34 [2024-11-01 04:37:22,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-01 04:37:22,404 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-01 04:37:22,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-01 04:37:22,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-01 04:37:22,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-01 04:37:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-01 04:37:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-01 04:37:22,412 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 44 [2024-11-01 04:37:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 04:37:22,413 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-01 04:37:22,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-01 04:37:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-01 04:37:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-01 04:37:22,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:37:22,415 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-01 04:37:22,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-01 04:37:22,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:22,617 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:37:22,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:37:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash 223728499, now seen corresponding path program 2 times [2024-11-01 04:37:22,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:37:22,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288380743] [2024-11-01 04:37:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:37:22,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:22,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:37:22,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 04:37:22,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-01 04:37:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:37:23,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-01 04:37:23,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:37:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 24 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-01 04:37:28,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:37:36,005 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse18 (= (bvand |c_ULTIMATE.start_main_~mask_SORT_3~0#1| |c_ULTIMATE.start_main_~state_177~0#1|) |c_ULTIMATE.start_main_~state_209~0#1|)) (.cse17 (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_13~0#1|) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_12~0#1|)))))))) (.cse20 (forall ((|v_ULTIMATE.start_main_~var_236_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_232_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_232_arg_1~0#1_17|)))))))))))))) (.cse21 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_213~0#1|)) (.cse12 (= ((_ extract 7 0) (bvand .cse1 (_ bv254 32))) (_ bv0 8)))) (let ((.cse3 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_194~0#1|)) (.cse13 (not .cse12)) (.cse15 (forall ((|v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| (_ BitVec 128))) (= |c_ULTIMATE.start_main_~state_209~0#1| (bvand |v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|)))) (.cse16 (or .cse20 .cse21 (forall ((|v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| (_ BitVec 128))) (not (= |c_ULTIMATE.start_main_~state_209~0#1| (bvand |v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|)))))) (.cse9 (= (_ bv0 8) ((_ extract 7 0) (bvand .cse1 (_ bv255 32))))) (.cse11 (not .cse17)) (.cse19 (or .cse20 (not .cse18) .cse21))) (let ((.cse23 (let ((.cse24 (and (or .cse20 .cse21 .cse18) .cse19))) (and (or (and (or .cse12 .cse24) (or .cse13 (and (or .cse15 .cse20 .cse21) .cse16))) .cse17) (or .cse9 .cse11 .cse24)))) (.cse22 (= (_ bv0 32) .cse3))) (let ((.cse6 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_190~0#1|)) (.cse8 (or .cse23 (not .cse22)))) (let ((.cse7 (= (_ bv0 8) |c_ULTIMATE.start_main_~input_7~0#1|)) (.cse5 (and (or .cse23 .cse22) .cse8)) (.cse4 (and .cse8 (or (let ((.cse14 (and (or .cse20 .cse21) (or (not .cse21) (forall ((|v_ULTIMATE.start_main_~var_236_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_193_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv255 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_193_arg_1~0#1_17|) .cse6))) (_ bv1 32)))))))))) (_ bv0 32)))))))))))) .cse1)))))))) (let ((.cse10 (and (or .cse14 .cse18) .cse19))) (and (or .cse9 .cse10 .cse11) (or (and (or .cse12 .cse10) (or .cse13 (and (or .cse14 .cse15) .cse16))) .cse17)))) .cse22))) (.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_11~0#1|))) (and (or (let ((.cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse6))))) (and (or (forall ((|ULTIMATE.start_main_~input_5~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_198_arg_0~0#1_16| (_ BitVec 8))) (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~input_5~0#1|) .cse1)))) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_198_arg_0~0#1_16|) .cse2)))))) .cse3)))))))))))))) .cse4) (or (forall ((|ULTIMATE.start_main_~input_5~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_198_arg_0~0#1_16| (_ BitVec 8))) (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~input_5~0#1|) .cse1)))) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_198_arg_0~0#1_16|) .cse2)))))) .cse3))))))))))))) .cse5))) (not .cse7)) (or .cse7 (and (or .cse5 (forall ((|v_ULTIMATE.start_main_~var_204_arg_1~0#1_16| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_204_arg_1~0#1_16|)))))) (_ bv0 32)))) (or .cse4 (forall ((|v_ULTIMATE.start_main_~var_204_arg_1~0#1_16| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_204_arg_1~0#1_16|)))))) (_ bv0 32)))))))))))))) is different from false