/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.arbitrated_top_n4_w16_d16_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 03:55:58,644 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 03:55:58,718 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 03:55:58,724 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 03:55:58,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 03:55:58,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 03:55:58,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 03:55:58,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 03:55:58,768 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 03:55:58,768 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 03:55:58,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 03:55:58,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 03:55:58,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 03:55:58,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 03:55:58,770 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 03:55:58,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 03:55:58,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 03:55:58,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 03:55:58,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 03:55:58,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 03:55:58,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 03:55:58,773 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 03:55:58,773 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 03:55:58,773 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 03:55:58,774 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 03:55:58,774 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 03:55:58,774 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 03:55:58,775 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 03:55:58,775 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 03:55:58,775 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 03:55:58,776 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 03:55:58,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 03:55:58,780 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 03:55:58,780 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 03:55:58,780 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 03:55:58,781 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 03:55:58,781 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 03:55:58,781 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 03:55:58,781 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 03:55:58,781 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 03:55:58,782 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 03:55:58,783 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 03:55:58,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:55:59,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 03:55:59,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 03:55:59,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 03:55:59,100 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 03:55:59,100 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 03:55:59,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d16_e0.c [2024-11-01 03:56:00,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 03:56:01,068 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 03:56:01,068 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d16_e0.c [2024-11-01 03:56:01,099 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d612830/9f972f9060b64df599297beae441ca8f/FLAGd1db1d161 [2024-11-01 03:56:01,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d612830/9f972f9060b64df599297beae441ca8f [2024-11-01 03:56:01,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 03:56:01,123 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 03:56:01,125 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 03:56:01,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 03:56:01,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 03:56:01,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:56:01" (1/1) ... [2024-11-01 03:56:01,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c752ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:01, skipping insertion in model container [2024-11-01 03:56:01,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:56:01" (1/1) ... [2024-11-01 03:56:01,224 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 03:56:01,462 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.arbitrated_top_n4_w16_d16_e0.c[1271,1284] [2024-11-01 03:56:01,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 03:56:02,021 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 03:56:02,032 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.arbitrated_top_n4_w16_d16_e0.c[1271,1284] [2024-11-01 03:56:02,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 03:56:02,241 INFO L204 MainTranslator]: Completed translation [2024-11-01 03:56:02,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02 WrapperNode [2024-11-01 03:56:02,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 03:56:02,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 03:56:02,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 03:56:02,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 03:56:02,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,491 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3132 [2024-11-01 03:56:02,492 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 03:56:02,493 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 03:56:02,493 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 03:56:02,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 03:56:02,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,528 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,622 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 03:56:02,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 03:56:02,746 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 03:56:02,746 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 03:56:02,746 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 03:56:02,747 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (1/1) ... [2024-11-01 03:56:02,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 03:56:02,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:56:02,780 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 03:56:02,787 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 03:56:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 03:56:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 03:56:02,812 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 03:56:02,813 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 03:56:02,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 03:56:02,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 03:56:03,289 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 03:56:03,291 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 03:56:05,937 INFO L? ?]: Removed 1026 outVars from TransFormulas that were not future-live. [2024-11-01 03:56:05,937 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 03:56:05,950 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 03:56:05,951 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 03:56:05,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:56:05 BoogieIcfgContainer [2024-11-01 03:56:05,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 03:56:05,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 03:56:05,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 03:56:05,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 03:56:05,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 03:56:01" (1/3) ... [2024-11-01 03:56:05,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e061fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:56:05, skipping insertion in model container [2024-11-01 03:56:05,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:56:02" (2/3) ... [2024-11-01 03:56:05,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e061fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:56:05, skipping insertion in model container [2024-11-01 03:56:05,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:56:05" (3/3) ... [2024-11-01 03:56:05,959 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n4_w16_d16_e0.c [2024-11-01 03:56:05,975 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 03:56:05,976 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 03:56:06,033 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 03:56:06,038 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;@45f72eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 03:56:06,039 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 03:56:06,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-01 03:56:06,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-01 03:56:06,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:56:06,050 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:56:06,050 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:56:06,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:56:06,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1644883339, now seen corresponding path program 1 times [2024-11-01 03:56:06,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:56:06,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129945442] [2024-11-01 03:56:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:56:06,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:56:06,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:56:06,064 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 03:56:06,084 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 03:56:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:56:07,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 03:56:07,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:56:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-01 03:56:07,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:56:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-01 03:56:07,349 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:56:07,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129945442] [2024-11-01 03:56:07,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2129945442] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-01 03:56:07,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-01 03:56:07,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-01 03:56:07,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892127102] [2024-11-01 03:56:07,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-01 03:56:07,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 03:56:07,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:56:07,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 03:56:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 03:56:07,388 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-01 03:56:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:56:07,411 INFO L93 Difference]: Finished difference Result 75 states and 117 transitions. [2024-11-01 03:56:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 03:56:07,413 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2024-11-01 03:56:07,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:56:07,421 INFO L225 Difference]: With dead ends: 75 [2024-11-01 03:56:07,422 INFO L226 Difference]: Without dead ends: 37 [2024-11-01 03:56:07,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 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 03:56:07,429 INFO L432 NwaCegarLoop]: 49 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, 49 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 03:56:07,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:56:07,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-01 03:56:07,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-01 03:56:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-01 03:56:07,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2024-11-01 03:56:07,477 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 83 [2024-11-01 03:56:07,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:56:07,478 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2024-11-01 03:56:07,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-01 03:56:07,479 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2024-11-01 03:56:07,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-01 03:56:07,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:56:07,482 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:56:07,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-01 03:56:07,686 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 03:56:07,687 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:56:07,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:56:07,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1385434447, now seen corresponding path program 1 times [2024-11-01 03:56:07,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:56:07,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247726617] [2024-11-01 03:56:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:56:07,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:56:07,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:56:07,690 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 03:56:07,692 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 03:56:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:56:08,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-01 03:56:08,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:56:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-01 03:56:09,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:56:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-01 03:56:09,905 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:56:09,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247726617] [2024-11-01 03:56:09,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [247726617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:56:09,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:56:09,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-01 03:56:09,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478136497] [2024-11-01 03:56:09,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:56:09,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-01 03:56:09,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:56:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-01 03:56:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:56:09,909 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-01 03:56:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:56:10,615 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2024-11-01 03:56:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-01 03:56:10,616 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 4 states have call successors, (26) Word has length 83 [2024-11-01 03:56:10,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:56:10,620 INFO L225 Difference]: With dead ends: 67 [2024-11-01 03:56:10,620 INFO L226 Difference]: Without dead ends: 65 [2024-11-01 03:56:10,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 154 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 03:56:10,621 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-01 03:56:10,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 80 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-01 03:56:10,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-01 03:56:10,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-01 03:56:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-01 03:56:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2024-11-01 03:56:10,639 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 83 [2024-11-01 03:56:10,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:56:10,640 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2024-11-01 03:56:10,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-01 03:56:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2024-11-01 03:56:10,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-01 03:56:10,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:56:10,646 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-01 03:56:10,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-01 03:56:10,847 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 03:56:10,848 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:56:10,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:56:10,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2082684701, now seen corresponding path program 1 times [2024-11-01 03:56:10,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:56:10,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910310190] [2024-11-01 03:56:10,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:56:10,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:56:10,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:56:10,851 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 03:56:10,852 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 03:56:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:56:12,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-01 03:56:12,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:56:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-01 03:56:13,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:56:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-01 03:56:25,373 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:56:25,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910310190] [2024-11-01 03:56:25,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [910310190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:56:25,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:56:25,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-01 03:56:25,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818566787] [2024-11-01 03:56:25,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:56:25,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 03:56:25,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:56:25,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 03:56:25,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=225, Unknown=1, NotChecked=0, Total=272 [2024-11-01 03:56:25,379 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 17 states, 15 states have (on average 4.933333333333334) internal successors, (74), 17 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) [2024-11-01 03:56:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:56:26,766 INFO L93 Difference]: Finished difference Result 96 states and 134 transitions. [2024-11-01 03:56:26,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-01 03:56:26,767 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.933333333333334) internal successors, (74), 17 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) Word has length 164 [2024-11-01 03:56:26,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:56:26,769 INFO L225 Difference]: With dead ends: 96 [2024-11-01 03:56:26,769 INFO L226 Difference]: Without dead ends: 94 [2024-11-01 03:56:26,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=81, Invalid=338, Unknown=1, NotChecked=0, Total=420 [2024-11-01 03:56:26,771 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-01 03:56:26,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 253 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-01 03:56:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-01 03:56:26,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-01 03:56:26,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-01 03:56:26,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions. [2024-11-01 03:56:26,790 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 164 [2024-11-01 03:56:26,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:56:26,791 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 132 transitions. [2024-11-01 03:56:26,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.933333333333334) internal successors, (74), 17 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) [2024-11-01 03:56:26,792 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions. [2024-11-01 03:56:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-01 03:56:26,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:56:26,800 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-01 03:56:26,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-01 03:56:27,001 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 03:56:27,002 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:56:27,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:56:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1116181263, now seen corresponding path program 2 times [2024-11-01 03:56:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:56:27,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360506717] [2024-11-01 03:56:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:56:27,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:56:27,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:56:27,005 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 03:56:27,006 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 03:56:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:56:29,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 3637 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-01 03:56:29,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:56:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 264 proven. 241 refuted. 0 times theorem prover too weak. 2544 trivial. 0 not checked. [2024-11-01 03:56:52,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:56:59,752 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse11 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_455~0#1|)) (.cse4 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse9 (or .cse11 (forall ((|v_ULTIMATE.start_main_~var_487_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_490_arg_0~0#1_18| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_487_arg_1~0#1_17|)))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_490_arg_0~0#1_18|)))) .cse4)))))) (.cse10 (not .cse11)) (.cse8 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_359~0#1|))) (let ((.cse0 (= |c_ULTIMATE.start_main_~input_11~0#1| (_ bv0 8))) (.cse7 (and .cse9 (or .cse10 (forall ((|v_ULTIMATE.start_main_~var_362_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_490_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_381_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_365_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ 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 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse8 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_362_arg_1~0#1_17|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_365_arg_1~0#1_17|)))) (_ bv254 32))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_381_arg_1~0#1_17|))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_490_arg_0~0#1_18|))))))))))) (.cse6 (and .cse9 (or .cse10 (forall ((|v_ULTIMATE.start_main_~var_362_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_490_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_381_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_365_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_381_arg_1~0#1_17|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse8 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_362_arg_1~0#1_17|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_365_arg_1~0#1_17|)))) (_ bv255 32))))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_490_arg_0~0#1_18|))))))))))) (.cse1 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_96~0#1|))) (and (or (not .cse0) (let ((.cse2 (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_334~0#1|)))))) (.cse3 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_363~0#1|)) (.cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse8))))) (and (or (forall ((|v_ULTIMATE.start_main_~var_368_arg_0~0#1_17| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_368_arg_0~0#1_17|) .cse5))))))))))))))))) (_ bv0 32)))) .cse6) (or (forall ((|v_ULTIMATE.start_main_~var_368_arg_0~0#1_17| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_368_arg_0~0#1_17|) .cse5))))))))))))))))) (_ bv0 32))) .cse7)))) (or .cse0 (and (or (forall ((|v_ULTIMATE.start_main_~var_374_arg_1~0#1_17| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_374_arg_1~0#1_17|)))))) (_ bv0 32))) .cse7) (or .cse6 (forall ((|v_ULTIMATE.start_main_~var_374_arg_1~0#1_17| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_374_arg_1~0#1_17|)))))) (_ bv0 32))))))))))) is different from false