/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d128_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 04:37:06,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 04:37:06,501 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 04:37:06,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 04:37:06,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 04:37:06,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 04:37:06,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 04:37:06,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 04:37:06,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 04:37:06,541 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 04:37:06,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 04:37:06,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 04:37:06,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 04:37:06,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 04:37:06,543 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 04:37:06,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 04:37:06,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 04:37:06,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 04:37:06,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 04:37:06,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 04:37:06,548 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 04:37:06,548 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 04:37:06,548 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 04:37:06,549 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 04:37:06,549 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 04:37:06,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 04:37:06,549 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 04:37:06,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 04:37:06,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 04:37:06,550 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 04:37:06,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 04:37:06,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 04:37:06,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 04:37:06,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 04:37:06,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 04:37:06,552 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 04:37:06,552 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 04:37:06,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 04:37:06,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 04:37:06,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 04:37:06,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 04:37:06,556 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 04:37:06,556 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:06,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 04:37:06,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 04:37:06,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 04:37:06,937 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 04:37:06,937 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 04:37:06,938 INFO L431 ainManager$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_d128_e0.c [2024-11-01 04:37:08,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 04:37:08,848 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 04:37:08,849 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d128_e0.c [2024-11-01 04:37:08,882 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/093ee3daf/5eb9657b2d704831b87ff01d8384c7b8/FLAG880c9087a [2024-11-01 04:37:09,050 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/093ee3daf/5eb9657b2d704831b87ff01d8384c7b8 [2024-11-01 04:37:09,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 04:37:09,055 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 04:37:09,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 04:37:09,057 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 04:37:09,065 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 04:37:09,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 04:37:09" (1/1) ... [2024-11-01 04:37:09,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f3be99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:09, skipping insertion in model container [2024-11-01 04:37:09,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 04:37:09" (1/1) ... [2024-11-01 04:37:09,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 04:37:09,449 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d128_e0.c[1336,1349] [2024-11-01 04:37:09,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 04:37:09,976 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 04:37:09,987 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d128_e0.c[1336,1349] [2024-11-01 04:37:10,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 04:37:10,237 INFO L204 MainTranslator]: Completed translation [2024-11-01 04:37:10,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10 WrapperNode [2024-11-01 04:37:10,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 04:37:10,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 04:37:10,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 04:37:10,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 04:37:10,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,463 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4727 [2024-11-01 04:37:10,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 04:37:10,464 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 04:37:10,464 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 04:37:10,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 04:37:10,475 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,645 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-01 04:37:10,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,709 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 04:37:10,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 04:37:10,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 04:37:10,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 04:37:10,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (1/1) ... [2024-11-01 04:37:10,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 04:37:10,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:37:10,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-01 04:37:10,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-01 04:37:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 04:37:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 04:37:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 04:37:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 04:37:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 04:37:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 04:37:11,510 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 04:37:11,512 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 04:37:17,363 INFO L? ?]: Removed 1282 outVars from TransFormulas that were not future-live. [2024-11-01 04:37:17,363 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 04:37:17,375 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 04:37:17,375 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 04:37:17,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 04:37:17 BoogieIcfgContainer [2024-11-01 04:37:17,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 04:37:17,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 04:37:17,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 04:37:17,381 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 04:37:17,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 04:37:09" (1/3) ... [2024-11-01 04:37:17,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f89c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 04:37:17, skipping insertion in model container [2024-11-01 04:37:17,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:37:10" (2/3) ... [2024-11-01 04:37:17,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f89c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 04:37:17, skipping insertion in model container [2024-11-01 04:37:17,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 04:37:17" (3/3) ... [2024-11-01 04:37:17,385 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w128_d128_e0.c [2024-11-01 04:37:17,402 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 04:37:17,402 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 04:37:17,463 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 04:37:17,469 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;@16b247be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 04:37:17,469 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 04:37:17,473 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) [2024-11-01 04:37:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 04:37:17,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:37:17,480 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 04:37:17,481 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:37:17,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:37:17,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times [2024-11-01 04:37:17,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:37:17,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673659837] [2024-11-01 04:37:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:37:17,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:17,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:37:17,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 04:37:17,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-01 04:37:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:37:18,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 04:37:19,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:37:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-01 04:37:19,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:37:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-01 04:37:19,068 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 04:37:19,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673659837] [2024-11-01 04:37:19,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [673659837] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-01 04:37:19,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-01 04:37:19,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-01 04:37:19,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430892771] [2024-11-01 04:37:19,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-01 04:37:19,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 04:37:19,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 04:37:19,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 04:37:19,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 04:37:19,109 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) [2024-11-01 04:37:19,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 04:37:19,126 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-01 04:37:19,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 04:37:19,128 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 [2024-11-01 04:37:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 04:37:19,135 INFO L225 Difference]: With dead ends: 35 [2024-11-01 04:37:19,135 INFO L226 Difference]: Without dead ends: 17 [2024-11-01 04:37:19,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 04:37:19,143 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 [2024-11-01 04:37:19,145 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] [2024-11-01 04:37:19,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-01 04:37:19,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-01 04:37:19,176 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) [2024-11-01 04:37:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-01 04:37:19,179 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23 [2024-11-01 04:37:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 04:37:19,179 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-01 04:37:19,179 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) [2024-11-01 04:37:19,180 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-01 04:37:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 04:37:19,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:37:19,183 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 04:37:19,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-01 04:37:19,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:19,385 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:37:19,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:37:19,386 INFO L85 PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times [2024-11-01 04:37:19,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:37:19,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181468632] [2024-11-01 04:37:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:37:19,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:19,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:37:19,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 04:37:19,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-01 04:37:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:37:20,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-01 04:37:20,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:37:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-01 04:37:21,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:37:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-01 04:37:22,167 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 04:37:22,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181468632] [2024-11-01 04:37:22,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1181468632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 04:37:22,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 04:37:22,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-01 04:37:22,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537713607] [2024-11-01 04:37:22,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 04:37:22,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-01 04:37:22,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 04:37:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-01 04:37:22,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-01 04:37:22,171 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-01 04:37:25,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-01 04:37:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 04:37:26,446 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-01 04:37:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-01 04:37:26,447 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2024-11-01 04:37:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 04:37:26,448 INFO L225 Difference]: With dead ends: 27 [2024-11-01 04:37:26,448 INFO L226 Difference]: Without dead ends: 25 [2024-11-01 04:37:26,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-01 04:37:26,450 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-01 04:37:26,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 53 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-01 04:37:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-01 04:37:26,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-01 04:37:26,466 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) [2024-11-01 04:37:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-01 04:37:26,467 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2024-11-01 04:37:26,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 04:37:26,469 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-01 04:37:26,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-01 04:37:26,469 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-01 04:37:26,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-01 04:37:26,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:37:26,470 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-01 04:37:26,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-01 04:37:26,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:26,672 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:37:26,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:37:26,672 INFO L85 PathProgramCache]: Analyzing trace with hash 416519459, now seen corresponding path program 1 times [2024-11-01 04:37:26,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:37:26,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778141143] [2024-11-01 04:37:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:37:26,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:26,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:37:26,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 04:37:26,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-01 04:37:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:37:28,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-01 04:37:28,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:37:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-01 04:37:29,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:37:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-01 04:37:34,418 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 04:37:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778141143] [2024-11-01 04:37:34,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [778141143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 04:37:34,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 04:37:34,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-01 04:37:34,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571764399] [2024-11-01 04:37:34,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 04:37:34,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 04:37:34,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 04:37:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 04:37:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-01 04:37:34,421 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-01 04:37:37,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-01 04:37:41,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-01 04:37:42,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 04:37:42,245 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-01 04:37:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-01 04:37:42,246 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) Word has length 44 [2024-11-01 04:37:42,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 04:37:42,247 INFO L225 Difference]: With dead ends: 36 [2024-11-01 04:37:42,247 INFO L226 Difference]: Without dead ends: 34 [2024-11-01 04:37:42,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-01 04:37:42,248 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-01 04:37:42,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-01 04:37:42,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-01 04:37:42,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-01 04:37:42,258 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) [2024-11-01 04:37:42,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-01 04:37:42,260 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 44 [2024-11-01 04:37:42,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 04:37:42,261 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-01 04:37:42,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-01 04:37:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-01 04:37:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-01 04:37:42,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:37:42,263 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-01 04:37:42,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-01 04:37:42,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:42,465 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:37:42,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:37:42,466 INFO L85 PathProgramCache]: Analyzing trace with hash 223728499, now seen corresponding path program 2 times [2024-11-01 04:37:42,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:37:42,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255826104] [2024-11-01 04:37:42,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:37:42,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:37:42,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:37:42,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 04:37:42,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-01 04:37:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:37:45,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 4438 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-01 04:37:45,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:37:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 55 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-01 04:37:51,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:37:56,050 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse11 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse2 (= (_ bv0 8) ((_ extract 7 0) (bvand .cse11 (_ bv255 32))))) (.cse5 (= (_ 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 16) |c_ULTIMATE.start_main_~state_12~0#1|)))))))) (.cse6 (= ((_ extract 7 0) (bvand .cse11 (_ bv254 32))) (_ bv0 8))) (.cse14 (= |c_ULTIMATE.start_main_~state_695~0#1| (_ bv0 8)))) (let ((.cse12 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_672~0#1|)) (.cse10 (not .cse14)) (.cse9 (or .cse14 (forall ((|v_ULTIMATE.start_main_~var_714_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_718_arg_0~0#1_18| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_718_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_714_arg_1~0#1_17|))))))))))) (_ bv0 8))))) (.cse7 (not .cse6)) (.cse4 (not .cse5)) (.cse1 (not .cse2)) (.cse8 (= (bvand |c_ULTIMATE.start_main_~state_659~0#1| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|) |c_ULTIMATE.start_main_~state_691~0#1|))) (and (or (let ((.cse3 (not .cse8)) (.cse0 (forall ((|v_ULTIMATE.start_main_~var_662_arg_2~0#1_16| (_ BitVec 128))) (not (= (bvand |v_ULTIMATE.start_main_~var_662_arg_2~0#1_16| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|) |c_ULTIMATE.start_main_~state_691~0#1|))))) (and (or (and (or .cse0 .cse1) (or .cse2 .cse3)) .cse4) (or .cse5 (and (or .cse6 .cse3) (or .cse7 .cse0))))) (and .cse9 (or .cse10 (forall ((|v_ULTIMATE.start_main_~var_678_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_675_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_689_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_718_arg_0~0#1_18| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_718_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_675_arg_1~0#1_17|) .cse12))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_678_arg_1~0#1_17|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_689_arg_1~0#1_17|))))))) (_ bv1 32))))))))))))))))))) (or (and (or (forall ((|v_ULTIMATE.start_main_~var_678_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_675_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_689_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_718_arg_0~0#1_18| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_718_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_675_arg_1~0#1_17|) .cse12))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_678_arg_1~0#1_17|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_689_arg_1~0#1_17|))))))) (_ bv0 32)))))))))))))))) .cse10) .cse9) (let ((.cse13 (forall ((|v_ULTIMATE.start_main_~var_662_arg_2~0#1_16| (_ BitVec 128))) (= (bvand |v_ULTIMATE.start_main_~var_662_arg_2~0#1_16| |c_ULTIMATE.start_main_~mask_SORT_3~0#1|) |c_ULTIMATE.start_main_~state_691~0#1|)))) (and (or .cse5 (and (or .cse6 .cse8) (or .cse7 .cse13))) (or .cse4 (and (or .cse13 .cse1) (or .cse2 .cse8)))))))))) is different from false