/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d64_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 08:04:10,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 08:04:10,174 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 08:04:10,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 08:04:10,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 08:04:10,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 08:04:10,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 08:04:10,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 08:04:10,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 08:04:10,215 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 08:04:10,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 08:04:10,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 08:04:10,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 08:04:10,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 08:04:10,216 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 08:04:10,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 08:04:10,217 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 08:04:10,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 08:04:10,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 08:04:10,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 08:04:10,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 08:04:10,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 08:04:10,220 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 08:04:10,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 08:04:10,221 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 08:04:10,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 08:04:10,221 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 08:04:10,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 08:04:10,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 08:04:10,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 08:04:10,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 08:04:10,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 08:04:10,222 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 08:04:10,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 08:04:10,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 08:04:10,223 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 08:04:10,226 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:10,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 08:04:10,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 08:04:10,226 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 08:04:10,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 08:04:10,227 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 08:04:10,227 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:10,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 08:04:10,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 08:04:10,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 08:04:10,555 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 08:04:10,556 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 08:04:10,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d64_e0.c [2024-11-01 08:04:11,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 08:04:12,273 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 08:04:12,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w32_d64_e0.c [2024-11-01 08:04:12,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185e3be35/8a34c8ccb9944ba3a2f530e04d00f115/FLAG64b7edd99 [2024-11-01 08:04:12,312 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/185e3be35/8a34c8ccb9944ba3a2f530e04d00f115 [2024-11-01 08:04:12,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 08:04:12,317 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 08:04:12,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 08:04:12,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 08:04:12,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 08:04:12,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:04:12" (1/1) ... [2024-11-01 08:04:12,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f5a592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:12, skipping insertion in model container [2024-11-01 08:04:12,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:04:12" (1/1) ... [2024-11-01 08:04:12,422 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 08:04:12,602 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_n2_w32_d64_e0.c[1271,1284] [2024-11-01 08:04:12,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 08:04:13,005 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 08:04:13,014 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_n2_w32_d64_e0.c[1271,1284] [2024-11-01 08:04:13,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 08:04:13,232 INFO L204 MainTranslator]: Completed translation [2024-11-01 08:04:13,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13 WrapperNode [2024-11-01 08:04:13,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 08:04:13,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 08:04:13,236 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 08:04:13,236 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 08:04:13,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,429 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4783 [2024-11-01 08:04:13,430 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 08:04:13,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 08:04:13,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 08:04:13,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 08:04:13,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,464 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,587 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 08:04:13,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,588 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,682 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 08:04:13,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 08:04:13,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 08:04:13,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 08:04:13,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (1/1) ... [2024-11-01 08:04:13,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 08:04:13,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 08:04:13,736 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 08:04:13,743 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 08:04:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 08:04:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 08:04:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 08:04:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 08:04:13,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 08:04:13,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 08:04:14,278 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 08:04:14,279 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 08:04:17,490 INFO L? ?]: Removed 1433 outVars from TransFormulas that were not future-live. [2024-11-01 08:04:17,491 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 08:04:17,498 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 08:04:17,499 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 08:04:17,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:04:17 BoogieIcfgContainer [2024-11-01 08:04:17,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 08:04:17,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 08:04:17,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 08:04:17,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 08:04:17,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 08:04:12" (1/3) ... [2024-11-01 08:04:17,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cb4dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:04:17, skipping insertion in model container [2024-11-01 08:04:17,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:13" (2/3) ... [2024-11-01 08:04:17,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cb4dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:04:17, skipping insertion in model container [2024-11-01 08:04:17,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:04:17" (3/3) ... [2024-11-01 08:04:17,504 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n2_w32_d64_e0.c [2024-11-01 08:04:17,515 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 08:04:17,515 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 08:04:17,552 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 08:04:17,556 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;@28cd28be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 08:04:17,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 08:04:17,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-01 08:04:17,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-01 08:04:17,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:04:17,564 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 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 08:04:17,565 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:04:17,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:04:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1387212075, now seen corresponding path program 1 times [2024-11-01 08:04:17,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:04:17,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317921920] [2024-11-01 08:04:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:04:17,576 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:17,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:04:17,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:04:17,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-01 08:04:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:04:19,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 08:04:19,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:04:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-01 08:04:19,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:04:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-01 08:04:19,220 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 08:04:19,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317921920] [2024-11-01 08:04:19,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [317921920] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 08:04:19,220 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 08:04:19,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-01 08:04:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089968174] [2024-11-01 08:04:19,222 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 08:04:19,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 08:04:19,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 08:04:19,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 08:04:19,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 08:04:19,241 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-01 08:04:19,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 08:04:19,253 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2024-11-01 08:04:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 08:04:19,254 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 47 [2024-11-01 08:04:19,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 08:04:19,259 INFO L225 Difference]: With dead ends: 51 [2024-11-01 08:04:19,259 INFO L226 Difference]: Without dead ends: 25 [2024-11-01 08:04:19,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 92 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 08:04:19,263 INFO L432 NwaCegarLoop]: 31 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, 31 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 08:04:19,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 08:04:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-01 08:04:19,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-01 08:04:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-01 08:04:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-01 08:04:19,287 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 47 [2024-11-01 08:04:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 08:04:19,287 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-01 08:04:19,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-01 08:04:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-01 08:04:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-01 08:04:19,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:04:19,289 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 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 08:04:19,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-01 08:04:19,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:19,494 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:04:19,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:04:19,494 INFO L85 PathProgramCache]: Analyzing trace with hash 971432711, now seen corresponding path program 1 times [2024-11-01 08:04:19,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:04:19,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141208172] [2024-11-01 08:04:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:04:19,495 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:19,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:04:19,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:04:19,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-01 08:04:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:04:21,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-01 08:04:21,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:04:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-01 08:04:22,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:04:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-01 08:04:22,588 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 08:04:22,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141208172] [2024-11-01 08:04:22,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1141208172] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 08:04:22,589 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 08:04:22,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 08:04:22,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673751740] [2024-11-01 08:04:22,589 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 08:04:22,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 08:04:22,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 08:04:22,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 08:04:22,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 08:04:22,591 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-01 08:04:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 08:04:23,456 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2024-11-01 08:04:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 08:04:23,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 47 [2024-11-01 08:04:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 08:04:23,459 INFO L225 Difference]: With dead ends: 43 [2024-11-01 08:04:23,460 INFO L226 Difference]: Without dead ends: 41 [2024-11-01 08:04:23,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 08:04:23,461 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-01 08:04:23,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-01 08:04:23,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-01 08:04:23,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-01 08:04:23,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-01 08:04:23,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-11-01 08:04:23,472 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 47 [2024-11-01 08:04:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 08:04:23,473 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-11-01 08:04:23,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-01 08:04:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-11-01 08:04:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-01 08:04:23,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:04:23,479 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 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 08:04:23,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-01 08:04:23,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:23,684 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:04:23,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:04:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash 815302051, now seen corresponding path program 1 times [2024-11-01 08:04:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:04:23,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852100947] [2024-11-01 08:04:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:04:23,685 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:23,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:04:23,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:04:23,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-01 08:04:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:04:27,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-01 08:04:27,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:04:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-01 08:04:28,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:04:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-01 08:04:31,438 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 08:04:31,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852100947] [2024-11-01 08:04:31,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1852100947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 08:04:31,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 08:04:31,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-01 08:04:31,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401849709] [2024-11-01 08:04:31,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 08:04:31,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-01 08:04:31,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 08:04:31,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-01 08:04:31,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-01 08:04:31,443 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 15 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 15 states have internal predecessors, (50), 8 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2024-11-01 08:04:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 08:04:33,663 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2024-11-01 08:04:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-01 08:04:33,664 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 15 states have internal predecessors, (50), 8 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) Word has length 92 [2024-11-01 08:04:33,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 08:04:33,667 INFO L225 Difference]: With dead ends: 60 [2024-11-01 08:04:33,667 INFO L226 Difference]: Without dead ends: 58 [2024-11-01 08:04:33,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-01 08:04:33,668 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-01 08:04:33,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 124 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-01 08:04:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-01 08:04:33,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-01 08:04:33,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-01 08:04:33,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-11-01 08:04:33,683 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 92 [2024-11-01 08:04:33,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 08:04:33,683 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-11-01 08:04:33,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 15 states have internal predecessors, (50), 8 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2024-11-01 08:04:33,683 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-11-01 08:04:33,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-01 08:04:33,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:04:33,687 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 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 08:04:33,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-01 08:04:33,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:33,891 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:04:33,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:04:33,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1845464953, now seen corresponding path program 2 times [2024-11-01 08:04:33,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:04:33,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789977438] [2024-11-01 08:04:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:04:33,894 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:33,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:04:33,895 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:04:33,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-01 08:04:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:04:40,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 4913 conjuncts, 156 conjuncts are in the unsatisfiable core [2024-11-01 08:04:40,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:04:45,711 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2024-11-01 08:04:45,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:04:51,192 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse11 (= |c_ULTIMATE.start_main_~state_690~0#1| (_ bv0 8)))) (let ((.cse9 (not .cse11)) (.cse8 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_630~0#1|)) (.cse10 (or (forall ((|v_ULTIMATE.start_main_~var_713_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_710_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_713_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_710_arg_1~0#1_17|))))))))))))) .cse11))) (let ((.cse3 (= (_ bv0 8) |c_ULTIMATE.start_main_~input_10~0#1|)) (.cse0 (and (or .cse9 (forall ((|v_ULTIMATE.start_main_~var_636_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_713_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_633_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_652_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse5 ((_ 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_652_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) |v_ULTIMATE.start_main_~var_636_arg_1~0#1_17|) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_633_arg_1~0#1_17|) .cse8)))))) (_ bv255 32))))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_713_arg_0~0#1_18|))))))))) .cse10)) (.cse1 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_315~0#1|)) (.cse2 (and (or (forall ((|v_ULTIMATE.start_main_~var_636_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_713_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_633_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_652_arg_1~0#1_17| (_ 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) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_652_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) |v_ULTIMATE.start_main_~var_636_arg_1~0#1_17|) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_633_arg_1~0#1_17|) .cse8)))))) (_ bv254 32))))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_713_arg_0~0#1_18|)))) .cse5)))) .cse9) .cse10))) (and (or (and (or .cse0 (forall ((|v_ULTIMATE.start_main_~var_645_arg_1~0#1_17| (_ BitVec 8))) (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_645_arg_1~0#1_17|)))))))))) (or (forall ((|v_ULTIMATE.start_main_~var_645_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_645_arg_1~0#1_17|)))))))) .cse2)) .cse3) (or (not .cse3) (let ((.cse4 (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_593~0#1|)))))) (.cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse8)))) (.cse7 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_634~0#1|))) (and (or (forall ((|v_ULTIMATE.start_main_~var_639_arg_0~0#1_17| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_639_arg_0~0#1_17|))))))) .cse7)))))))) .cse1))) (_ bv0 32)))) .cse0) (or (forall ((|v_ULTIMATE.start_main_~var_639_arg_0~0#1_17| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_639_arg_0~0#1_17|))))))) .cse7)))))))) .cse1))) (_ bv0 32))) .cse2)))))))) is different from false