/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_n5_w16_d16_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 03:57:45,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 03:57:45,149 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 03:57:45,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 03:57:45,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 03:57:45,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 03:57:45,192 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 03:57:45,192 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 03:57:45,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 03:57:45,193 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 03:57:45,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 03:57:45,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 03:57:45,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 03:57:45,195 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 03:57:45,195 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 03:57:45,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 03:57:45,196 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 03:57:45,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 03:57:45,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 03:57:45,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 03:57:45,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 03:57:45,206 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 03:57:45,206 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 03:57:45,206 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 03:57:45,207 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 03:57:45,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 03:57:45,208 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 03:57:45,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 03:57:45,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 03:57:45,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 03:57:45,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 03:57:45,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 03:57:45,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 03:57:45,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 03:57:45,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 03:57:45,210 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 03:57:45,210 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 03:57:45,211 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 03:57:45,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 03:57:45,211 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 03:57:45,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 03:57:45,212 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 03:57:45,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:57:45,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 03:57:45,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 03:57:45,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 03:57:45,557 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 03:57:45,558 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 03:57:45,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d16_e0.c [2024-11-01 03:57:47,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 03:57:47,524 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 03:57:47,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d16_e0.c [2024-11-01 03:57:47,548 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c22b2f2/db09a704f6f846e0a28a9619b19c8e45/FLAGbc95bf153 [2024-11-01 03:57:47,560 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c22b2f2/db09a704f6f846e0a28a9619b19c8e45 [2024-11-01 03:57:47,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 03:57:47,564 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 03:57:47,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 03:57:47,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 03:57:47,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 03:57:47,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:57:47" (1/1) ... [2024-11-01 03:57:47,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea667cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:47, skipping insertion in model container [2024-11-01 03:57:47,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:57:47" (1/1) ... [2024-11-01 03:57:47,653 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 03:57:47,898 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_n5_w16_d16_e0.c[1325,1338] [2024-11-01 03:57:48,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 03:57:48,364 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 03:57:48,375 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_n5_w16_d16_e0.c[1325,1338] [2024-11-01 03:57:48,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 03:57:48,674 INFO L204 MainTranslator]: Completed translation [2024-11-01 03:57:48,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48 WrapperNode [2024-11-01 03:57:48,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 03:57:48,676 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 03:57:48,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 03:57:48,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 03:57:48,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:48,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:48,884 INFO L138 Inliner]: procedures = 18, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3852 [2024-11-01 03:57:48,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 03:57:48,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 03:57:48,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 03:57:48,886 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 03:57:48,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:48,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:48,921 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:48,990 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 03:57:48,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:48,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:49,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:49,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:49,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:49,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:49,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 03:57:49,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 03:57:49,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 03:57:49,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 03:57:49,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (1/1) ... [2024-11-01 03:57:49,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 03:57:49,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:57:49,219 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 03:57:49,225 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 03:57:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 03:57:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 03:57:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 03:57:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 03:57:49,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 03:57:49,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 03:57:49,863 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 03:57:49,865 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 03:57:52,970 INFO L? ?]: Removed 1263 outVars from TransFormulas that were not future-live. [2024-11-01 03:57:52,970 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 03:57:52,984 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 03:57:52,984 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 03:57:52,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:57:52 BoogieIcfgContainer [2024-11-01 03:57:52,985 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 03:57:52,987 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 03:57:52,987 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 03:57:52,990 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 03:57:52,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 03:57:47" (1/3) ... [2024-11-01 03:57:52,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa98079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:57:52, skipping insertion in model container [2024-11-01 03:57:52,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:57:48" (2/3) ... [2024-11-01 03:57:52,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa98079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:57:52, skipping insertion in model container [2024-11-01 03:57:52,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:57:52" (3/3) ... [2024-11-01 03:57:52,992 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n5_w16_d16_e0.c [2024-11-01 03:57:53,006 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 03:57:53,007 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 03:57:53,064 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 03:57:53,071 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;@304b348f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 03:57:53,072 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 03:57:53,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-01 03:57:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-01 03:57:53,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:57:53,084 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:57:53,085 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:57:53,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:57:53,089 INFO L85 PathProgramCache]: Analyzing trace with hash -726051243, now seen corresponding path program 1 times [2024-11-01 03:57:53,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:57:53,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105288687] [2024-11-01 03:57:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:57:53,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:57:53,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:57:53,099 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 03:57:53,100 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 03:57:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:57:54,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 03:57:54,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:57:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-01 03:57:54,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:57:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-01 03:57:54,525 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:57:54,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105288687] [2024-11-01 03:57:54,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [105288687] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-01 03:57:54,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-01 03:57:54,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-01 03:57:54,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726192500] [2024-11-01 03:57:54,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-01 03:57:54,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 03:57:54,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:57:54,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 03:57:54,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 03:57:54,563 INFO L87 Difference]: Start difference. First operand has 46 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-01 03:57:54,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:57:54,583 INFO L93 Difference]: Finished difference Result 87 states and 138 transitions. [2024-11-01 03:57:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 03:57:54,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 101 [2024-11-01 03:57:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:57:54,594 INFO L225 Difference]: With dead ends: 87 [2024-11-01 03:57:54,594 INFO L226 Difference]: Without dead ends: 43 [2024-11-01 03:57:54,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 200 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 03:57:54,601 INFO L432 NwaCegarLoop]: 58 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, 58 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 03:57:54,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 03:57:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-01 03:57:54,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-01 03:57:54,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-01 03:57:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2024-11-01 03:57:54,647 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 101 [2024-11-01 03:57:54,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:57:54,647 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2024-11-01 03:57:54,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-01 03:57:54,648 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2024-11-01 03:57:54,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-01 03:57:54,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:57:54,652 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:57:54,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-01 03:57:54,853 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 03:57:54,854 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:57:54,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:57:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash -520200651, now seen corresponding path program 1 times [2024-11-01 03:57:54,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:57:54,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645626995] [2024-11-01 03:57:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:57:54,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:57:54,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:57:54,857 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 03:57:54,859 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 03:57:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:57:56,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-01 03:57:56,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:57:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-01 03:57:56,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:57:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-01 03:57:57,508 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:57:57,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645626995] [2024-11-01 03:57:57,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [645626995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:57:57,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:57:57,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-01 03:57:57,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757486367] [2024-11-01 03:57:57,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:57:57,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-01 03:57:57,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:57:57,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-01 03:57:57,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:57:57,512 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 11 states, 9 states have (on average 5.333333333333333) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-01 03:57:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:57:58,581 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2024-11-01 03:57:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-01 03:57:58,582 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.333333333333333) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) Word has length 101 [2024-11-01 03:57:58,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:57:58,584 INFO L225 Difference]: With dead ends: 79 [2024-11-01 03:57:58,584 INFO L226 Difference]: Without dead ends: 77 [2024-11-01 03:57:58,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 190 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 03:57:58,585 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-01 03:57:58,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 123 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-01 03:57:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-01 03:57:58,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-01 03:57:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-01 03:57:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2024-11-01 03:57:58,607 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 108 transitions. Word has length 101 [2024-11-01 03:57:58,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:57:58,608 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 108 transitions. [2024-11-01 03:57:58,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.333333333333333) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 2 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-01 03:57:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 108 transitions. [2024-11-01 03:57:58,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-01 03:57:58,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:57:58,617 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-01 03:57:58,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-01 03:57:58,818 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 03:57:58,819 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:57:58,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:57:58,819 INFO L85 PathProgramCache]: Analyzing trace with hash -511202845, now seen corresponding path program 1 times [2024-11-01 03:57:58,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:57:58,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126936518] [2024-11-01 03:57:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:57:58,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:57:58,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:57:58,822 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 03:57:58,824 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 03:58:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:58:00,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 3011 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-01 03:58:00,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:58:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2024-11-01 03:58:01,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:58:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2024-11-01 03:58:14,558 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:58:14,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126936518] [2024-11-01 03:58:14,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [126936518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:58:14,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:58:14,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-01 03:58:14,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129080716] [2024-11-01 03:58:14,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:58:14,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 03:58:14,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:58:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 03:58:14,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=225, Unknown=1, NotChecked=0, Total=272 [2024-11-01 03:58:14,563 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. Second operand has 17 states, 15 states have (on average 5.733333333333333) internal successors, (86), 17 states have internal predecessors, (86), 8 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 6 states have call predecessors, (64), 8 states have call successors, (64) [2024-11-01 03:58:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:58:16,773 INFO L93 Difference]: Finished difference Result 114 states and 161 transitions. [2024-11-01 03:58:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-01 03:58:16,775 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.733333333333333) internal successors, (86), 17 states have internal predecessors, (86), 8 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 6 states have call predecessors, (64), 8 states have call successors, (64) Word has length 200 [2024-11-01 03:58:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:58:16,781 INFO L225 Difference]: With dead ends: 114 [2024-11-01 03:58:16,781 INFO L226 Difference]: Without dead ends: 112 [2024-11-01 03:58:16,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=81, Invalid=338, Unknown=1, NotChecked=0, Total=420 [2024-11-01 03:58:16,783 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-01 03:58:16,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 379 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-01 03:58:16,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-01 03:58:16,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-01 03:58:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-01 03:58:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 159 transitions. [2024-11-01 03:58:16,803 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 159 transitions. Word has length 200 [2024-11-01 03:58:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:58:16,804 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 159 transitions. [2024-11-01 03:58:16,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.733333333333333) internal successors, (86), 17 states have internal predecessors, (86), 8 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 6 states have call predecessors, (64), 8 states have call successors, (64) [2024-11-01 03:58:16,805 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 159 transitions. [2024-11-01 03:58:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-01 03:58:16,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:58:16,809 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-01 03:58:16,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-01 03:58:17,010 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 03:58:17,011 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:58:17,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:58:17,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2140848267, now seen corresponding path program 2 times [2024-11-01 03:58:17,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:58:17,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673392325] [2024-11-01 03:58:17,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:58:17,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:58:17,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:58:17,013 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 03:58:17,014 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 03:58:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:58:19,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 4479 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-01 03:58:19,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:58:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4615 backedges. 339 proven. 292 refuted. 0 times theorem prover too weak. 3984 trivial. 0 not checked. [2024-11-01 03:58:33,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:58:39,857 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse11 (= |c_ULTIMATE.start_main_~state_554~0#1| (_ bv0 8)))) (let ((.cse8 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_440~0#1|)) (.cse9 (not .cse11)) (.cse10 (or .cse11 (forall ((|v_ULTIMATE.start_main_~var_595_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_592_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse6 ((_ 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_592_arg_1~0#1_17|)))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_595_arg_0~0#1_18|))))))))))) (let ((.cse1 (and (or (forall ((|v_ULTIMATE.start_main_~var_462_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_595_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_446_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_443_arg_1~0#1_17| (_ BitVec 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_462_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 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_443_arg_1~0#1_17|) .cse8))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_446_arg_1~0#1_17|)))) (_ bv254 32))))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_595_arg_0~0#1_18|)))) .cse6)) (_ bv0 8))) .cse9) .cse10)) (.cse3 (and (or (forall ((|v_ULTIMATE.start_main_~var_462_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_595_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_446_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_443_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse6 ((_ 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_462_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 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_443_arg_1~0#1_17|) .cse8))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_446_arg_1~0#1_17|)))) (_ bv255 32))))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_595_arg_0~0#1_18|)))))))) .cse9) .cse10)) (.cse2 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_96~0#1|)) (.cse0 (= |c_ULTIMATE.start_main_~input_11~0#1| (_ bv0 8)))) (and (or .cse0 (and (or .cse1 (forall ((|v_ULTIMATE.start_main_~var_455_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_455_arg_1~0#1_17|))))))))) (or .cse3 (forall ((|v_ULTIMATE.start_main_~var_455_arg_1~0#1_17| (_ BitVec 8))) (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_455_arg_1~0#1_17|)))))))))))) (or (let ((.cse4 (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_413~0#1|) .cse6))))) (.cse5 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_444~0#1|)) (.cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse8))))) (and (or .cse1 (forall ((|v_ULTIMATE.start_main_~var_449_arg_0~0#1_17| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse7 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_449_arg_0~0#1_17|)))))))))))))))))) (_ bv0 32)))) (or .cse3 (forall ((|v_ULTIMATE.start_main_~var_449_arg_0~0#1_17| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse7 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_449_arg_0~0#1_17|)))))))))))))))))) (_ bv0 32))))))) (not .cse0)))))) is different from false