/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 --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -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-17387ad-m [2024-11-06 15:20:43,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 15:20:44,024 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-06 15:20:44,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 15:20:44,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 15:20:44,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 15:20:44,056 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 15:20:44,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 15:20:44,057 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 15:20:44,058 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 15:20:44,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 15:20:44,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 15:20:44,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 15:20:44,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 15:20:44,061 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 15:20:44,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 15:20:44,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 15:20:44,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 15:20:44,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 15:20:44,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 15:20:44,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 15:20:44,066 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 15:20:44,066 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 15:20:44,066 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 15:20:44,066 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 15:20:44,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 15:20:44,067 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 15:20:44,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 15:20:44,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 15:20:44,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 15:20:44,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 15:20:44,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 15:20:44,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 15:20:44,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 15:20:44,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 15:20:44,069 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 15:20:44,069 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 15:20:44,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 15:20:44,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 15:20:44,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 15:20:44,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 15:20:44,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 15:20:44,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 15:20:44,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 15:20:44,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 15:20:44,323 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 15:20:44,323 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 15:20:44,324 INFO L431 ainManager$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 [2024-11-06 15:20:45,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 15:20:46,024 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 15:20:46,025 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c [2024-11-06 15:20:46,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e68051b3/8a88e57302204c38b8fb8e1713ef7ae4/FLAG50bf7fcfd [2024-11-06 15:20:46,351 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e68051b3/8a88e57302204c38b8fb8e1713ef7ae4 [2024-11-06 15:20:46,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 15:20:46,355 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 15:20:46,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 15:20:46,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 15:20:46,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 15:20:46,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:20:46" (1/1) ... [2024-11-06 15:20:46,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ceca239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:46, skipping insertion in model container [2024-11-06 15:20:46,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:20:46" (1/1) ... [2024-11-06 15:20:46,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 15:20:46,629 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] [2024-11-06 15:20:46,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 15:20:46,934 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 15:20:46,943 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] [2024-11-06 15:20:47,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 15:20:47,087 INFO L204 MainTranslator]: Completed translation [2024-11-06 15:20:47,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47 WrapperNode [2024-11-06 15:20:47,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 15:20:47,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 15:20:47,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 15:20:47,091 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 15:20:47,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,225 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1459 [2024-11-06 15:20:47,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 15:20:47,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 15:20:47,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 15:20:47,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 15:20:47,239 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,249 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,285 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]. [2024-11-06 15:20:47,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 15:20:47,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 15:20:47,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 15:20:47,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 15:20:47,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (1/1) ... [2024-11-06 15:20:47,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 15:20:47,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:20:47,388 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) [2024-11-06 15:20:47,391 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 [2024-11-06 15:20:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 15:20:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 15:20:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 15:20:47,422 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 15:20:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 15:20:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 15:20:47,709 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 15:20:47,711 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 15:20:48,904 INFO L? ?]: Removed 416 outVars from TransFormulas that were not future-live. [2024-11-06 15:20:48,904 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 15:20:48,918 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 15:20:48,919 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 15:20:48,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:20:48 BoogieIcfgContainer [2024-11-06 15:20:48,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 15:20:48,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 15:20:48,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 15:20:48,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 15:20:48,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:20:46" (1/3) ... [2024-11-06 15:20:48,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7477a3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:20:48, skipping insertion in model container [2024-11-06 15:20:48,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:47" (2/3) ... [2024-11-06 15:20:48,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7477a3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:20:48, skipping insertion in model container [2024-11-06 15:20:48,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:20:48" (3/3) ... [2024-11-06 15:20:48,931 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w128_d32_e0.c [2024-11-06 15:20:48,948 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 15:20:48,948 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 15:20:49,010 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 15:20:49,017 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;@675ba480, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 15:20:49,017 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 15:20:49,022 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) [2024-11-06 15:20:49,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-06 15:20:49,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:20:49,031 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 15:20:49,032 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:20:49,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:20:49,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times [2024-11-06 15:20:49,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:20:49,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682820102] [2024-11-06 15:20:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:20:49,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:20:49,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:20:49,056 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) [2024-11-06 15:20:49,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 15:20:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:20:49,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-06 15:20:49,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:20:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-06 15:20:49,649 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 15:20:49,650 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 15:20:49,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682820102] [2024-11-06 15:20:49,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682820102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 15:20:49,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 15:20:49,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 15:20:49,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353573611] [2024-11-06 15:20:49,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 15:20:49,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 15:20:49,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 15:20:49,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 15:20:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 15:20:49,678 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) [2024-11-06 15:20:49,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 15:20:49,692 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-06 15:20:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 15:20:49,694 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 [2024-11-06 15:20:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 15:20:49,698 INFO L225 Difference]: With dead ends: 35 [2024-11-06 15:20:49,699 INFO L226 Difference]: Without dead ends: 17 [2024-11-06 15:20:49,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 15:20:49,703 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 [2024-11-06 15:20:49,704 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] [2024-11-06 15:20:49,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-06 15:20:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-06 15:20:49,724 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) [2024-11-06 15:20:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-06 15:20:49,726 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23 [2024-11-06 15:20:49,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 15:20:49,726 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-06 15:20:49,727 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) [2024-11-06 15:20:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-06 15:20:49,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-06 15:20:49,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:20:49,728 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 15:20:49,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 15:20:49,929 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 [2024-11-06 15:20:49,929 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:20:49,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:20:49,930 INFO L85 PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times [2024-11-06 15:20:49,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:20:49,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679989874] [2024-11-06 15:20:49,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:20:49,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:20:49,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:20:49,933 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) [2024-11-06 15:20:49,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 15:20:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:20:50,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-06 15:20:50,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:20:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 15:20:50,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 15:20:50,793 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 15:20:50,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679989874] [2024-11-06 15:20:50,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679989874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 15:20:50,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1993751078] [2024-11-06 15:20:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:20:50,794 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 15:20:50,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 15:20:50,814 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-06 15:20:50,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-06 15:20:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:20:51,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 15:20:51,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:20:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-06 15:20:51,903 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 15:20:51,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1993751078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 15:20:51,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 15:20:51,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2024-11-06 15:20:51,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308199876] [2024-11-06 15:20:51,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 15:20:51,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 15:20:51,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 15:20:51,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 15:20:51,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-06 15:20:51,908 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 15:20:52,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 15:20:52,385 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-06 15:20:52,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 15:20:52,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-11-06 15:20:52,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 15:20:52,386 INFO L225 Difference]: With dead ends: 27 [2024-11-06 15:20:52,386 INFO L226 Difference]: Without dead ends: 25 [2024-11-06 15:20:52,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-06 15:20:52,388 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 15:20:52,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 15:20:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-06 15:20:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-06 15:20:52,395 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) [2024-11-06 15:20:52,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-06 15:20:52,396 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2024-11-06 15:20:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 15:20:52,400 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-06 15:20:52,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 15:20:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-06 15:20:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-06 15:20:52,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:20:52,402 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-06 15:20:52,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 15:20:52,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-06 15:20:52,803 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,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-06 15:20:52,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:20:52,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:20:52,804 INFO L85 PathProgramCache]: Analyzing trace with hash 416519459, now seen corresponding path program 1 times [2024-11-06 15:20:52,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:20:52,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701900168] [2024-11-06 15:20:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:20:52,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:20:52,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:20:52,809 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) [2024-11-06 15:20:52,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 15:20:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:20:53,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-06 15:20:53,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:20:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-06 15:20:54,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 15:20:54,158 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 15:20:54,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701900168] [2024-11-06 15:20:54,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701900168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 15:20:54,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1305933759] [2024-11-06 15:20:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:20:54,159 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 15:20:54,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 15:20:54,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-06 15:20:54,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-06 15:20:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:20:55,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-06 15:20:55,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:20:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-06 15:20:56,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 15:20:56,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1305933759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 15:20:56,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 15:20:56,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2024-11-06 15:20:56,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863507893] [2024-11-06 15:20:56,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 15:20:56,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 15:20:56,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 15:20:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 15:20:56,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-06 15:20:56,393 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 15:20:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 15:20:57,200 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-06 15:20:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 15:20:57,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2024-11-06 15:20:57,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 15:20:57,202 INFO L225 Difference]: With dead ends: 36 [2024-11-06 15:20:57,202 INFO L226 Difference]: Without dead ends: 34 [2024-11-06 15:20:57,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-06 15:20:57,203 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 15:20:57,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 76 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 15:20:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-06 15:20:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-06 15:20:57,210 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) [2024-11-06 15:20:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-06 15:20:57,212 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 44 [2024-11-06 15:20:57,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 15:20:57,212 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-06 15:20:57,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 15:20:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-06 15:20:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-06 15:20:57,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:20:57,214 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-06 15:20:57,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 15:20:57,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-06 15:20:57,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-06 15:20:57,615 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:20:57,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:20:57,616 INFO L85 PathProgramCache]: Analyzing trace with hash 223728499, now seen corresponding path program 2 times [2024-11-06 15:20:57,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:20:57,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519267835] [2024-11-06 15:20:57,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 15:20:57,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:20:57,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:20:57,620 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 15:20:57,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 15:20:58,924 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 15:20:58,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 15:20:58,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-06 15:20:58,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:21:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 55 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-06 15:21:02,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 15:21:09,361 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse5 (forall ((|v_ULTIMATE.start_main_~var_232_arg_1~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_236_arg_0~0#1_20| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_arg_0~0#1_20|) ((_ 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_18|)))))))))))))) (.cse4 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_213~0#1|))) (let ((.cse9 (not .cse4)) (.cse8 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_190~0#1|)) (.cse10 (or .cse4 .cse5))) (let ((.cse6 (and (or .cse9 (forall ((|v_ULTIMATE.start_main_~var_196_arg_1~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_193_arg_1~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_207_arg_1~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_236_arg_0~0#1_20| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_arg_0~0#1_20|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_207_arg_1~0#1_18|) ((_ 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_18|) .cse8))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_196_arg_1~0#1_18|))))))))))))))))))))))) (_ bv0 8)))) .cse10))) (let ((.cse2 (let ((.cse7 (= (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|))) (and (or .cse6 .cse7) (or (and (or (forall ((|v_ULTIMATE.start_main_~var_196_arg_1~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_193_arg_1~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_207_arg_1~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_236_arg_0~0#1_20| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_arg_0~0#1_20|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_207_arg_1~0#1_18|) ((_ 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_18|) .cse8))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_196_arg_1~0#1_18|))))))))))))))))))))))))) .cse9) .cse10) (not .cse7))))) (.cse1 (= (_ 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|))))))))) (and (or (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 (_ bv255 32)))) (not .cse1) .cse2) (or (let ((.cse3 (= ((_ extract 7 0) (bvand .cse0 (_ bv254 32))) (_ bv0 8)))) (and (or .cse3 .cse2) (or (not .cse3) (and (or .cse4 (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|)))) .cse5) (or (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|))) .cse6))))) .cse1))))))) is different from false [2024-11-06 15:21:09,552 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 15:21:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519267835] [2024-11-06 15:21:09,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519267835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 15:21:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1414641476] [2024-11-06 15:21:09,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 15:21:09,553 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 15:21:09,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 15:21:09,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-06 15:21:09,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-06 15:21:12,114 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 15:21:12,114 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 15:21:12,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-06 15:21:12,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:21:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 55 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-06 15:21:14,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 15:21:20,749 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse9 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse7 (= (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|)) (.cse12 (forall ((|v_ULTIMATE.start_main_~var_232_arg_1~0#1_22| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_233~0#1|))) ((_ 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_22|))))))))))) (_ bv0 8)))) (.cse13 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_190~0#1|))) (let ((.cse6 (forall ((|v_ULTIMATE.start_main_~var_180_arg_2~0#1_20| (_ BitVec 128))) (= |c_ULTIMATE.start_main_~state_209~0#1| (bvand |v_ULTIMATE.start_main_~var_180_arg_2~0#1_20| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|)))) (.cse8 (and .cse12 (forall ((|v_ULTIMATE.start_main_~var_234_arg_2~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_193_arg_1~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_207_arg_1~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_196_arg_1~0#1_22| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse9 ((_ 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 (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_196_arg_1~0#1_22|) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_193_arg_1~0#1_22|) .cse13)))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_207_arg_1~0#1_22|))))))))))))))) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_234_arg_2~0#1_22|)))))))))))) (.cse2 (not .cse7)) (.cse3 (forall ((|v_ULTIMATE.start_main_~var_180_arg_2~0#1_20| (_ BitVec 128))) (not (= |c_ULTIMATE.start_main_~state_209~0#1| (bvand |v_ULTIMATE.start_main_~var_180_arg_2~0#1_20| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|))))) (.cse5 (and .cse12 (forall ((|v_ULTIMATE.start_main_~var_234_arg_2~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_193_arg_1~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_207_arg_1~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_196_arg_1~0#1_22| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse9 ((_ 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 (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_196_arg_1~0#1_22|) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_193_arg_1~0#1_22|) .cse13)))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_207_arg_1~0#1_22|))))))))))))))) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_234_arg_2~0#1_22|)))))))) (_ bv0 8))))) (.cse0 (= (_ 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|))))))))) (and (or (not .cse0) (let ((.cse1 (= (_ bv0 8) ((_ extract 7 0) (bvand .cse9 (_ bv255 32)))))) (let ((.cse4 (not .cse1))) (and (or (and (or .cse1 .cse2) (or .cse3 .cse4)) .cse5) (or (and (or .cse6 .cse4) (or .cse1 .cse7)) .cse8))))) (or (let ((.cse11 (= ((_ extract 7 0) (bvand .cse9 (_ bv254 32))) (_ bv0 8)))) (let ((.cse10 (not .cse11))) (and (or (and (or .cse10 .cse6) (or .cse11 .cse7)) .cse8) (or (and (or .cse11 .cse2) (or .cse10 .cse3)) .cse5)))) .cse0))))) is different from false [2024-11-06 15:21:21,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1414641476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 15:21:21,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 15:21:21,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2024-11-06 15:21:21,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104040317] [2024-11-06 15:21:21,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 15:21:21,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-06 15:21:21,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 15:21:21,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-06 15:21:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=204, Unknown=2, NotChecked=58, Total=306 [2024-11-06 15:21:21,376 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 15 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-06 15:21:46,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-06 15:21:47,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-06 15:21:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 15:21:48,193 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-11-06 15:21:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 15:21:48,197 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 65 [2024-11-06 15:21:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 15:21:48,198 INFO L225 Difference]: With dead ends: 46 [2024-11-06 15:21:48,198 INFO L226 Difference]: Without dead ends: 44 [2024-11-06 15:21:48,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=111, Invalid=542, Unknown=5, NotChecked=98, Total=756 [2024-11-06 15:21:48,199 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-06 15:21:48,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 98 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 199 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2024-11-06 15:21:48,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-06 15:21:48,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-06 15:21:48,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-06 15:21:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2024-11-06 15:21:48,215 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 65 [2024-11-06 15:21:48,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 15:21:48,215 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2024-11-06 15:21:48,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-06 15:21:48,216 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2024-11-06 15:21:48,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-06 15:21:48,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:21:48,218 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2024-11-06 15:21:48,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 15:21:48,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-06 15:21:48,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-06 15:21:48,619 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:21:48,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:21:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash -888101085, now seen corresponding path program 3 times [2024-11-06 15:21:48,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:21:48,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487805628] [2024-11-06 15:21:48,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 15:21:48,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:21:48,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:21:48,624 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 15:21:48,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 15:21:54,383 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-06 15:21:54,383 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 15:21:54,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 239 conjuncts are in the unsatisfiable core [2024-11-06 15:21:54,450 INFO L278 TraceCheckSpWp]: Computing forward predicates...