/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 16:06:40,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 16:06:40,726 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 16:06:40,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 16:06:40,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 16:06:40,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 16:06:40,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 16:06:40,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 16:06:40,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 16:06:40,749 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 16:06:40,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 16:06:40,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 16:06:40,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 16:06:40,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 16:06:40,752 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 16:06:40,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 16:06:40,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 16:06:40,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 16:06:40,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 16:06:40,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 16:06:40,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 16:06:40,756 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 16:06:40,756 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 16:06:40,756 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 16:06:40,757 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 16:06:40,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 16:06:40,757 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 16:06:40,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 16:06:40,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 16:06:40,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 16:06:40,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 16:06:40,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 16:06:40,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 16:06:40,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 16:06:40,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 16:06:40,759 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 16:06:40,760 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 16:06:40,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 16:06:40,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 16:06:40,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 16:06:40,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 16:06:40,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 16:06:40,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 16:06:40,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 16:06:40,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 16:06:40,944 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 16:06:40,944 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 16:06:40,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c [2024-11-04 16:06:42,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 16:06:42,342 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 16:06:42,343 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c [2024-11-04 16:06:42,351 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3965671f7/a182a5498dd24c45a4359199b4cbbf70/FLAGb5e836a4a [2024-11-04 16:06:42,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3965671f7/a182a5498dd24c45a4359199b4cbbf70 [2024-11-04 16:06:42,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 16:06:42,690 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 16:06:42,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 16:06:42,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 16:06:42,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 16:06:42,697 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:06:42" (1/1) ... [2024-11-04 16:06:42,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536cd0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:42, skipping insertion in model container [2024-11-04 16:06:42,698 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:06:42" (1/1) ... [2024-11-04 16:06:42,742 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 16:06:42,896 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c[1335,1348] [2024-11-04 16:06:43,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 16:06:43,094 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 16:06:43,105 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c[1335,1348] [2024-11-04 16:06:43,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 16:06:43,199 INFO L204 MainTranslator]: Completed translation [2024-11-04 16:06:43,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43 WrapperNode [2024-11-04 16:06:43,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 16:06:43,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 16:06:43,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 16:06:43,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 16:06:43,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,286 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1459 [2024-11-04 16:06:43,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 16:06:43,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 16:06:43,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 16:06:43,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 16:06:43,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,308 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,352 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]. [2024-11-04 16:06:43,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,387 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,423 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 16:06:43,424 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 16:06:43,424 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 16:06:43,424 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 16:06:43,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (1/1) ... [2024-11-04 16:06:43,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 16:06:43,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 16:06:43,475 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) [2024-11-04 16:06:43,478 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 [2024-11-04 16:06:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 16:06:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 16:06:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 16:06:43,498 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 16:06:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 16:06:43,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 16:06:43,691 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 16:06:43,693 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 16:06:44,550 INFO L? ?]: Removed 416 outVars from TransFormulas that were not future-live. [2024-11-04 16:06:44,551 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 16:06:44,561 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 16:06:44,561 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-04 16:06:44,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:06:44 BoogieIcfgContainer [2024-11-04 16:06:44,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 16:06:44,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 16:06:44,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 16:06:44,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 16:06:44,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:06:42" (1/3) ... [2024-11-04 16:06:44,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ed8a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:06:44, skipping insertion in model container [2024-11-04 16:06:44,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:06:43" (2/3) ... [2024-11-04 16:06:44,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ed8a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:06:44, skipping insertion in model container [2024-11-04 16:06:44,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:06:44" (3/3) ... [2024-11-04 16:06:44,571 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c [2024-11-04 16:06:44,584 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 16:06:44,584 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 16:06:44,629 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 16:06:44,633 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;@6f2861a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 16:06:44,634 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 16:06:44,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-04 16:06:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-04 16:06:44,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 16:06:44,644 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 16:06:44,645 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 16:06:44,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 16:06:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times [2024-11-04 16:06:44,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 16:06:44,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87705972] [2024-11-04 16:06:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 16:06:44,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 16:06:44,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 16:06:44,660 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) [2024-11-04 16:06:44,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-04 16:06:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 16:06:45,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-04 16:06:45,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 16:06:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-04 16:06:45,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 16:06:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-04 16:06:45,143 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 16:06:45,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87705972] [2024-11-04 16:06:45,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [87705972] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 16:06:45,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 16:06:45,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-04 16:06:45,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613975814] [2024-11-04 16:06:45,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 16:06:45,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-04 16:06:45,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 16:06:45,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-04 16:06:45,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 16:06:45,168 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-04 16:06:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 16:06:45,180 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-04 16:06:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-04 16:06:45,181 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-11-04 16:06:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 16:06:45,186 INFO L225 Difference]: With dead ends: 35 [2024-11-04 16:06:45,186 INFO L226 Difference]: Without dead ends: 17 [2024-11-04 16:06:45,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 16:06:45,191 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 16:06:45,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 16:06:45,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-04 16:06:45,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-04 16:06:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-04 16:06:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-04 16:06:45,216 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23 [2024-11-04 16:06:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 16:06:45,216 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-04 16:06:45,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-04 16:06:45,216 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-04 16:06:45,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-04 16:06:45,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 16:06:45,217 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 16:06:45,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-04 16:06:45,418 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 [2024-11-04 16:06:45,419 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 16:06:45,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 16:06:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times [2024-11-04 16:06:45,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 16:06:45,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760278867] [2024-11-04 16:06:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 16:06:45,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 16:06:45,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 16:06:45,421 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) [2024-11-04 16:06:45,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-04 16:06:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 16:06:45,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-04 16:06:45,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 16:06:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-04 16:06:45,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 16:06:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-04 16:06:46,266 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 16:06:46,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760278867] [2024-11-04 16:06:46,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1760278867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 16:06:46,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 16:06:46,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-04 16:06:46,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653288956] [2024-11-04 16:06:46,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 16:06:46,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-04 16:06:46,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 16:06:46,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-04 16:06:46,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-04 16:06:46,269 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-04 16:06:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 16:06:46,820 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-04 16:06:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-04 16:06:46,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2024-11-04 16:06:46,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 16:06:46,821 INFO L225 Difference]: With dead ends: 27 [2024-11-04 16:06:46,821 INFO L226 Difference]: Without dead ends: 25 [2024-11-04 16:06:46,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-04 16:06:46,823 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-04 16:06:46,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 53 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-04 16:06:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-04 16:06:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-04 16:06:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-04 16:06:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-04 16:06:46,828 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2024-11-04 16:06:46,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 16:06:46,829 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-04 16:06:46,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-04 16:06:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-04 16:06:46,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-04 16:06:46,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 16:06:46,831 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-04 16:06:46,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-04 16:06:47,034 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 [2024-11-04 16:06:47,035 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 16:06:47,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 16:06:47,035 INFO L85 PathProgramCache]: Analyzing trace with hash 416519459, now seen corresponding path program 1 times [2024-11-04 16:06:47,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 16:06:47,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296570866] [2024-11-04 16:06:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 16:06:47,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 16:06:47,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 16:06:47,039 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) [2024-11-04 16:06:47,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-04 16:06:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 16:06:47,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-04 16:06:47,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 16:06:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-04 16:06:47,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 16:06:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-04 16:06:49,429 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 16:06:49,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296570866] [2024-11-04 16:06:49,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1296570866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 16:06:49,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 16:06:49,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-04 16:06:49,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625134871] [2024-11-04 16:06:49,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 16:06:49,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 16:06:49,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 16:06:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 16:06:49,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-04 16:06:49,433 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-04 16:06:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 16:06:50,359 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-04 16:06:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-04 16:06:50,360 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) Word has length 44 [2024-11-04 16:06:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 16:06:50,361 INFO L225 Difference]: With dead ends: 36 [2024-11-04 16:06:50,361 INFO L226 Difference]: Without dead ends: 34 [2024-11-04 16:06:50,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-04 16:06:50,362 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-04 16:06:50,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-04 16:06:50,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-04 16:06:50,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-04 16:06:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-04 16:06:50,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-04 16:06:50,370 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 44 [2024-11-04 16:06:50,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 16:06:50,371 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-04 16:06:50,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-04 16:06:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-04 16:06:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-04 16:06:50,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 16:06:50,374 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-04 16:06:50,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-04 16:06:50,575 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 [2024-11-04 16:06:50,576 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 16:06:50,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 16:06:50,576 INFO L85 PathProgramCache]: Analyzing trace with hash 223728499, now seen corresponding path program 2 times [2024-11-04 16:06:50,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 16:06:50,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441602806] [2024-11-04 16:06:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 16:06:50,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 16:06:50,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 16:06:50,578 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) [2024-11-04 16:06:50,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-04 16:06:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 16:06:51,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-04 16:06:51,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 16:06:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 24 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-04 16:06:54,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 16:07:01,626 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse18 (= (bvand |c_ULTIMATE.start_main_~mask_SORT_3~0#1| |c_ULTIMATE.start_main_~state_177~0#1|) |c_ULTIMATE.start_main_~state_209~0#1|)) (.cse17 (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_13~0#1|) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_12~0#1|)))))))) (.cse20 (forall ((|v_ULTIMATE.start_main_~var_236_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_232_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_232_arg_1~0#1_17|)))))))))))))) (.cse21 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_213~0#1|)) (.cse12 (= ((_ extract 7 0) (bvand .cse1 (_ bv254 32))) (_ bv0 8)))) (let ((.cse3 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_194~0#1|)) (.cse13 (not .cse12)) (.cse15 (forall ((|v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| (_ BitVec 128))) (= |c_ULTIMATE.start_main_~state_209~0#1| (bvand |v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|)))) (.cse16 (or .cse20 .cse21 (forall ((|v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| (_ BitVec 128))) (not (= |c_ULTIMATE.start_main_~state_209~0#1| (bvand |v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|)))))) (.cse9 (= (_ bv0 8) ((_ extract 7 0) (bvand .cse1 (_ bv255 32))))) (.cse11 (not .cse17)) (.cse19 (or .cse20 (not .cse18) .cse21))) (let ((.cse23 (let ((.cse24 (and (or .cse20 .cse21 .cse18) .cse19))) (and (or (and (or .cse12 .cse24) (or .cse13 (and (or .cse15 .cse20 .cse21) .cse16))) .cse17) (or .cse9 .cse11 .cse24)))) (.cse22 (= (_ bv0 32) .cse3))) (let ((.cse6 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_190~0#1|)) (.cse8 (or .cse23 (not .cse22)))) (let ((.cse7 (= (_ bv0 8) |c_ULTIMATE.start_main_~input_7~0#1|)) (.cse5 (and (or .cse23 .cse22) .cse8)) (.cse4 (and .cse8 (or (let ((.cse14 (and (or .cse20 .cse21) (or (not .cse21) (forall ((|v_ULTIMATE.start_main_~var_236_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_193_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv255 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_193_arg_1~0#1_17|) .cse6))) (_ bv1 32)))))))))) (_ bv0 32)))))))))))) .cse1)))))))) (let ((.cse10 (and (or .cse14 .cse18) .cse19))) (and (or .cse9 .cse10 .cse11) (or (and (or .cse12 .cse10) (or .cse13 (and (or .cse14 .cse15) .cse16))) .cse17)))) .cse22))) (.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_11~0#1|))) (and (or (let ((.cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse6))))) (and (or (forall ((|ULTIMATE.start_main_~input_5~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_198_arg_0~0#1_16| (_ BitVec 8))) (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~input_5~0#1|) .cse1)))) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_198_arg_0~0#1_16|) .cse2)))))) .cse3)))))))))))))) .cse4) (or (forall ((|ULTIMATE.start_main_~input_5~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_198_arg_0~0#1_16| (_ BitVec 8))) (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~input_5~0#1|) .cse1)))) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_198_arg_0~0#1_16|) .cse2)))))) .cse3))))))))))))) .cse5))) (not .cse7)) (or .cse7 (and (or .cse5 (forall ((|v_ULTIMATE.start_main_~var_204_arg_1~0#1_16| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_204_arg_1~0#1_16|)))))) (_ bv0 32)))) (or .cse4 (forall ((|v_ULTIMATE.start_main_~var_204_arg_1~0#1_16| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_204_arg_1~0#1_16|)))))) (_ bv0 32)))))))))))))) is different from false