/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_d16_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 15:20:39,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 15:20:39,189 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 15:20:39,195 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 15:20:39,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 15:20:39,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 15:20:39,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 15:20:39,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 15:20:39,231 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 15:20:39,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 15:20:39,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 15:20:39,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 15:20:39,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 15:20:39,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 15:20:39,234 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 15:20:39,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 15:20:39,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 15:20:39,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 15:20:39,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 15:20:39,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 15:20:39,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 15:20:39,238 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 15:20:39,238 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 15:20:39,238 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 15:20:39,239 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 15:20:39,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 15:20:39,239 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 15:20:39,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 15:20:39,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 15:20:39,240 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 15:20:39,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 15:20:39,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 15:20:39,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 15:20:39,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 15:20:39,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 15:20:39,242 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 15:20:39,242 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 15:20:39,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 15:20:39,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 15:20:39,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 15:20:39,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 15:20:39,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 15:20:39,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 15:20:39,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 15:20:39,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 15:20:39,490 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 15:20:39,490 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 15:20:39,491 INFO L431 ainManager$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_d16_e0.c [2024-11-06 15:20:40,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 15:20:41,192 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 15:20:41,193 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d16_e0.c [2024-11-06 15:20:41,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40ed937bb/b96c5f26307b44299458dcef72f06a5a/FLAGaddf98679 [2024-11-06 15:20:41,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40ed937bb/b96c5f26307b44299458dcef72f06a5a [2024-11-06 15:20:41,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 15:20:41,231 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 15:20:41,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 15:20:41,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 15:20:41,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 15:20:41,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:41,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e94836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41, skipping insertion in model container [2024-11-06 15:20:41,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:41,297 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 15:20:41,496 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_d16_e0.c[1335,1348] [2024-11-06 15:20:41,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 15:20:41,708 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 15:20:41,717 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_d16_e0.c[1335,1348] [2024-11-06 15:20:41,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 15:20:41,823 INFO L204 MainTranslator]: Completed translation [2024-11-06 15:20:41,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41 WrapperNode [2024-11-06 15:20:41,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 15:20:41,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 15:20:41,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 15:20:41,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 15:20:41,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:41,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:41,909 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 913 [2024-11-06 15:20:41,909 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 15:20:41,910 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 15:20:41,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 15:20:41,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 15:20:41,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:41,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:41,928 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:41,981 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 15:20:41,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:41,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:42,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:42,021 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:42,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:42,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:42,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 15:20:42,060 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 15:20:42,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 15:20:42,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 15:20:42,061 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (1/1) ... [2024-11-06 15:20:42,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 15:20:42,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:20:42,089 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 15:20:42,092 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 15:20:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 15:20:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 15:20:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 15:20:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 15:20:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 15:20:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 15:20:42,340 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 15:20:42,342 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 15:20:43,145 INFO L? ?]: Removed 271 outVars from TransFormulas that were not future-live. [2024-11-06 15:20:43,147 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 15:20:43,158 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 15:20:43,159 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 15:20:43,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:20:43 BoogieIcfgContainer [2024-11-06 15:20:43,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 15:20:43,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 15:20:43,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 15:20:43,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 15:20:43,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:20:41" (1/3) ... [2024-11-06 15:20:43,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d72cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:20:43, skipping insertion in model container [2024-11-06 15:20:43,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:20:41" (2/3) ... [2024-11-06 15:20:43,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d72cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:20:43, skipping insertion in model container [2024-11-06 15:20:43,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:20:43" (3/3) ... [2024-11-06 15:20:43,170 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w128_d16_e0.c [2024-11-06 15:20:43,188 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 15:20:43,188 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 15:20:43,250 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 15:20:43,257 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;@3ef37df2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 15:20:43,257 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 15:20:43,261 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 15:20:43,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-06 15:20:43,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:20:43,270 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 15:20:43,270 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:20:43,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:20:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times [2024-11-06 15:20:43,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:20:43,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809764350] [2024-11-06 15:20:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:20:43,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:20:43,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:20:43,295 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 15:20:43,297 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 15:20:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:20:43,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-06 15:20:43,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:20:43,741 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 15:20:43,741 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 15:20:43,742 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 15:20:43,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809764350] [2024-11-06 15:20:43,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809764350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 15:20:43,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 15:20:43,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 15:20:43,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509764208] [2024-11-06 15:20:43,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 15:20:43,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 15:20:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 15:20:43,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 15:20:43,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 15:20:43,775 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 15:20:43,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 15:20:43,797 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-06 15:20:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 15:20:43,799 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 15:20:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 15:20:43,807 INFO L225 Difference]: With dead ends: 35 [2024-11-06 15:20:43,807 INFO L226 Difference]: Without dead ends: 17 [2024-11-06 15:20:43,810 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 15:20:43,813 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 15:20:43,815 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 15:20:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-06 15:20:43,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-06 15:20:43,849 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 15:20:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-06 15:20:43,853 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23 [2024-11-06 15:20:43,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 15:20:43,853 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-06 15:20:43,853 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 15:20:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-06 15:20:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-06 15:20:43,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:20:43,855 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 15:20:43,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-06 15:20:44,056 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 15:20:44,057 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:20:44,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:20:44,057 INFO L85 PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times [2024-11-06 15:20:44,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:20:44,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328659132] [2024-11-06 15:20:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:20:44,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:20:44,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:20:44,061 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 15:20:44,064 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 15:20:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:20:44,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-06 15:20:44,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:20:44,658 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 15:20:44,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 15:20:44,799 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 15:20:44,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328659132] [2024-11-06 15:20:44,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328659132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 15:20:44,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [773413111] [2024-11-06 15:20:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:20:44,800 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 15:20:44,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 15:20:44,822 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 15:20:44,824 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 15:20:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:20:45,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 15:20:45,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:20:45,495 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 15:20:45,495 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 15:20:45,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [773413111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 15:20:45,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 15:20:45,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2024-11-06 15:20:45,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687378863] [2024-11-06 15:20:45,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 15:20:45,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 15:20:45,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 15:20:45,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 15:20:45,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-06 15:20:45,498 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 15:20:45,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 15:20:45,688 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-06 15:20:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 15:20:45,688 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 15:20:45,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 15:20:45,689 INFO L225 Difference]: With dead ends: 27 [2024-11-06 15:20:45,690 INFO L226 Difference]: Without dead ends: 25 [2024-11-06 15:20:45,690 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 15:20:45,691 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 15:20:45,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 15:20:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-06 15:20:45,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-06 15:20:45,701 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 15:20:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-06 15:20:45,702 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2024-11-06 15:20:45,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 15:20:45,703 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-06 15:20:45,704 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 15:20:45,704 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-06 15:20:45,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-06 15:20:45,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:20:45,706 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 15:20:45,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 15:20:45,914 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 15:20:46,106 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 15:20:46,107 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:20:46,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:20:46,108 INFO L85 PathProgramCache]: Analyzing trace with hash 416519459, now seen corresponding path program 1 times [2024-11-06 15:20:46,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:20:46,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952914007] [2024-11-06 15:20:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:20:46,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:20:46,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:20:46,112 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 15:20:46,114 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 15:20:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:20:46,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-06 15:20:46,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:20:47,110 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 15:20:47,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 15:20:47,284 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 15:20:47,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952914007] [2024-11-06 15:20:47,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952914007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 15:20:47,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1835073982] [2024-11-06 15:20:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:20:47,285 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 15:20:47,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 15:20:47,287 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 15:20:47,289 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 15:20:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:20:48,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-06 15:20:48,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:20:48,699 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 15:20:48,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 15:20:48,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1835073982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 15:20:48,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 15:20:48,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2024-11-06 15:20:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184119921] [2024-11-06 15:20:48,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 15:20:48,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 15:20:48,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 15:20:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 15:20:48,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-06 15:20:48,824 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 15:20:49,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 15:20:49,429 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-06 15:20:49,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 15:20:49,429 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 15:20:49,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 15:20:49,431 INFO L225 Difference]: With dead ends: 36 [2024-11-06 15:20:49,431 INFO L226 Difference]: Without dead ends: 34 [2024-11-06 15:20:49,431 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 15:20:49,432 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 15:20:49,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 76 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 15:20:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-06 15:20:49,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-06 15:20:49,442 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 15:20:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-06 15:20:49,443 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 44 [2024-11-06 15:20:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 15:20:49,443 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-06 15:20:49,444 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 15:20:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-06 15:20:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-06 15:20:49,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:20:49,447 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 15:20:49,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-06 15:20:49,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-06 15:20:49,848 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 15:20:49,848 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:20:49,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:20:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash 223728499, now seen corresponding path program 2 times [2024-11-06 15:20:49,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:20:49,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346456132] [2024-11-06 15:20:49,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 15:20:49,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:20:49,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:20:49,853 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 15:20:49,854 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 15:20:50,633 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 15:20:50,633 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 15:20:50,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-06 15:20:50,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:20:54,009 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 15:20:54,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 15:20:59,668 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse2 (forall ((|v_ULTIMATE.start_main_~var_155_arg_0~0#1_20| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_151_arg_1~0#1_18| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_151_arg_1~0#1_18|)))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_155_arg_0~0#1_20|))))))))) (.cse3 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_132~0#1|))) (let ((.cse8 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_109~0#1|)) (.cse9 (not .cse3)) (.cse10 (or .cse2 .cse3))) (let ((.cse1 (and (or (forall ((|v_ULTIMATE.start_main_~var_112_arg_1~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_155_arg_0~0#1_20| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_115_arg_1~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_126_arg_1~0#1_18| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ 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) ((_ extract 7 0) (bvand .cse8 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_112_arg_1~0#1_18|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_115_arg_1~0#1_18|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_126_arg_1~0#1_18|))))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_155_arg_0~0#1_20|)))))))) .cse9) .cse10))) (let ((.cse4 (let ((.cse7 (= |c_ULTIMATE.start_main_~state_128~0#1| (bvand |c_ULTIMATE.start_main_~state_96~0#1| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|)))) (and (or (not .cse7) (and (or (forall ((|v_ULTIMATE.start_main_~var_112_arg_1~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_155_arg_0~0#1_20| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_115_arg_1~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_126_arg_1~0#1_18| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ 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) ((_ extract 7 0) (bvand .cse8 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_112_arg_1~0#1_18|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_115_arg_1~0#1_18|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_126_arg_1~0#1_18|))))))))))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_155_arg_0~0#1_20|)))))))) .cse9) .cse10)) (or .cse1 .cse7)))) (.cse6 (= (_ 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 (let ((.cse0 (= ((_ extract 7 0) (bvand .cse5 (_ bv254 32))) (_ bv0 8)))) (and (or (not .cse0) (and (or .cse1 (forall ((|v_ULTIMATE.start_main_~var_99_arg_2~0#1_16| (_ BitVec 128))) (= (bvand |v_ULTIMATE.start_main_~var_99_arg_2~0#1_16| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|) |c_ULTIMATE.start_main_~state_128~0#1|))) (or .cse2 .cse3 (forall ((|v_ULTIMATE.start_main_~var_99_arg_2~0#1_16| (_ BitVec 128))) (not (= (bvand |v_ULTIMATE.start_main_~var_99_arg_2~0#1_16| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|) |c_ULTIMATE.start_main_~state_128~0#1|)))))) (or .cse0 .cse4))) .cse6) (or (= (_ bv0 8) ((_ extract 7 0) (bvand .cse5 (_ bv255 32)))) .cse4 (not .cse6)))))))) is different from false [2024-11-06 15:21:00,259 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 15:21:00,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346456132] [2024-11-06 15:21:00,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346456132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 15:21:00,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1600061673] [2024-11-06 15:21:00,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 15:21:00,260 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 15:21:00,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 15:21:00,261 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 15:21:00,263 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 15:21:01,931 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 15:21:01,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 15:21:01,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-06 15:21:02,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:21:07,884 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 15:21:07,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 15:21:13,880 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse8 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_109~0#1|))) (let ((.cse5 (forall ((|v_ULTIMATE.start_main_~var_126_arg_1~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_112_arg_1~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_115_arg_1~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_153_arg_2~0#1_21| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_153_arg_2~0#1_21|))) ((_ 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_115_arg_1~0#1_22|) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse8 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_112_arg_1~0#1_22|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_126_arg_1~0#1_22|)))))))))))))))))))) (_ bv0 8)))) (.cse6 (forall ((|v_ULTIMATE.start_main_~var_151_arg_1~0#1_22| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_152~0#1|))) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_151_arg_1~0#1_22|))))))))))))))) (let ((.cse1 (let ((.cse7 (= |c_ULTIMATE.start_main_~state_128~0#1| (bvand |c_ULTIMATE.start_main_~state_96~0#1| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|)))) (and (or .cse7 (and .cse6 .cse5)) (or (not .cse7) (and .cse6 (forall ((|v_ULTIMATE.start_main_~var_126_arg_1~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_112_arg_1~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_115_arg_1~0#1_22| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_153_arg_2~0#1_21| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ 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_115_arg_1~0#1_22|) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse8 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_112_arg_1~0#1_22|))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_126_arg_1~0#1_22|))))))))))))))) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_153_arg_2~0#1_21|))))))))))))))) (.cse2 (= (_ 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)))) .cse1 (not .cse2)) (or (let ((.cse3 (= ((_ extract 7 0) (bvand .cse0 (_ bv254 32))) (_ bv0 8)))) (and (or .cse3 .cse1) (or (not .cse3) (let ((.cse4 (forall ((|v_ULTIMATE.start_main_~var_99_arg_2~0#1_20| (_ BitVec 128))) (= (bvand |v_ULTIMATE.start_main_~var_99_arg_2~0#1_20| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|) |c_ULTIMATE.start_main_~state_128~0#1|)))) (and (or .cse4 .cse5) (or .cse4 .cse6) (or .cse6 (forall ((|v_ULTIMATE.start_main_~var_99_arg_2~0#1_20| (_ BitVec 128))) (not (= (bvand |v_ULTIMATE.start_main_~var_99_arg_2~0#1_20| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|) |c_ULTIMATE.start_main_~state_128~0#1|))))))))) .cse2))))) is different from false [2024-11-06 15:21:14,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1600061673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 15:21:14,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 15:21:14,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2024-11-06 15:21:14,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488317694] [2024-11-06 15:21:14,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 15:21:14,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 15:21:14,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 15:21:14,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 15:21:14,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=155, Unknown=2, NotChecked=50, Total=240 [2024-11-06 15:21:14,489 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-06 15:21:25,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-06 15:21:30,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-06 15:21:31,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 15:21:31,646 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-11-06 15:21:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-06 15:21:31,648 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 65 [2024-11-06 15:21:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 15:21:31,649 INFO L225 Difference]: With dead ends: 46 [2024-11-06 15:21:31,649 INFO L226 Difference]: Without dead ends: 44 [2024-11-06 15:21:31,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=105, Invalid=501, Unknown=2, NotChecked=94, Total=702 [2024-11-06 15:21:31,650 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2024-11-06 15:21:31,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 98 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 189 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2024-11-06 15:21:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-06 15:21:31,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-06 15:21:31,664 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 15:21:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2024-11-06 15:21:31,665 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 65 [2024-11-06 15:21:31,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 15:21:31,665 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2024-11-06 15:21:31,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-06 15:21:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2024-11-06 15:21:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-06 15:21:31,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:21:31,668 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 15:21:31,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-06 15:21:31,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-06 15:21:32,069 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 15:21:32,069 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:21:32,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:21:32,070 INFO L85 PathProgramCache]: Analyzing trace with hash -888101085, now seen corresponding path program 3 times [2024-11-06 15:21:32,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:21:32,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158280848] [2024-11-06 15:21:32,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 15:21:32,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:21:32,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:21:32,073 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 15:21:32,074 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 15:21:34,240 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-06 15:21:34,241 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 15:21:34,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 219 conjuncts are in the unsatisfiable core [2024-11-06 15:21:34,307 INFO L278 TraceCheckSpWp]: Computing forward predicates...