/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.iprotocol.5.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 21:42:20,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 21:42:20,608 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 21:42:20,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 21:42:20,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 21:42:20,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 21:42:20,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 21:42:20,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 21:42:20,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 21:42:20,671 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 21:42:20,671 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 21:42:20,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 21:42:20,672 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 21:42:20,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 21:42:20,673 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 21:42:20,674 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 21:42:20,674 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 21:42:20,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 21:42:20,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 21:42:20,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 21:42:20,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 21:42:20,681 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 21:42:20,681 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 21:42:20,681 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 21:42:20,682 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 21:42:20,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 21:42:20,682 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 21:42:20,682 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 21:42:20,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 21:42:20,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 21:42:20,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 21:42:20,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 21:42:20,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 21:42:20,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 21:42:20,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 21:42:20,685 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 21:42:20,685 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 21:42:20,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 21:42:20,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 21:42:20,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 21:42:20,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 21:42:20,687 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 21:42:20,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-01 21:42:20,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 21:42:21,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 21:42:21,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 21:42:21,022 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 21:42:21,023 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 21:42:21,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.iprotocol.5.prop1-back-serstep.c [2024-11-01 21:42:22,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 21:42:22,898 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 21:42:22,899 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.iprotocol.5.prop1-back-serstep.c [2024-11-01 21:42:22,921 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04816acab/794ed716105841e79da4f838c09a1701/FLAG386fe2540 [2024-11-01 21:42:22,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04816acab/794ed716105841e79da4f838c09a1701 [2024-11-01 21:42:22,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 21:42:22,939 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 21:42:22,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 21:42:22,942 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 21:42:22,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 21:42:22,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:42:22" (1/1) ... [2024-11-01 21:42:22,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a9cdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:22, skipping insertion in model container [2024-11-01 21:42:22,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:42:22" (1/1) ... [2024-11-01 21:42:23,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 21:42:23,239 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.iprotocol.5.prop1-back-serstep.c[1177,1190] [2024-11-01 21:42:23,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 21:42:23,668 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 21:42:23,679 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.iprotocol.5.prop1-back-serstep.c[1177,1190] [2024-11-01 21:42:23,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 21:42:23,933 INFO L204 MainTranslator]: Completed translation [2024-11-01 21:42:23,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23 WrapperNode [2024-11-01 21:42:23,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 21:42:23,935 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 21:42:23,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 21:42:23,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 21:42:23,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,215 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4012 [2024-11-01 21:42:24,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 21:42:24,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 21:42:24,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 21:42:24,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 21:42:24,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,254 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,322 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 21:42:24,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 21:42:24,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 21:42:24,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 21:42:24,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 21:42:24,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (1/1) ... [2024-11-01 21:42:24,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 21:42:24,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 21:42:24,522 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 21:42:24,530 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 21:42:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 21:42:24,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 21:42:24,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 21:42:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 21:42:25,078 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 21:42:25,080 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 21:42:35,017 INFO L? ?]: Removed 416 outVars from TransFormulas that were not future-live. [2024-11-01 21:42:35,018 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 21:42:35,029 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 21:42:35,029 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 21:42:35,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:42:35 BoogieIcfgContainer [2024-11-01 21:42:35,030 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 21:42:35,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 21:42:35,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 21:42:35,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 21:42:35,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 09:42:22" (1/3) ... [2024-11-01 21:42:35,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f0aeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:42:35, skipping insertion in model container [2024-11-01 21:42:35,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:42:23" (2/3) ... [2024-11-01 21:42:35,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f0aeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:42:35, skipping insertion in model container [2024-11-01 21:42:35,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:42:35" (3/3) ... [2024-11-01 21:42:35,038 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.iprotocol.5.prop1-back-serstep.c [2024-11-01 21:42:35,053 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 21:42:35,053 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 21:42:35,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 21:42:35,122 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;@37d0e4ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 21:42:35,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 21:42:35,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 21:42:35,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-01 21:42:35,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 21:42:35,133 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-01 21:42:35,135 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 21:42:35,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 21:42:35,141 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-01 21:42:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 21:42:35,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562178289] [2024-11-01 21:42:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 21:42:35,150 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 21:42:35,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 21:42:35,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 21:42:35,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-01 21:42:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 21:42:36,090 WARN L253 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 379 conjuncts are in the unsatisfiable core [2024-11-01 21:42:36,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 21:42:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 21:42:49,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 21:42:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 21:42:56,642 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 21:42:56,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562178289] [2024-11-01 21:42:56,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1562178289] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 21:42:56,643 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 21:42:56,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 21:42:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770013536] [2024-11-01 21:42:56,646 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 21:42:56,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 21:42:56,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 21:42:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 21:42:56,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 21:42:56,672 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 21:43:01,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-01 21:43:03,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-01 21:43:09,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-01 21:43:13,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-01 21:43:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 21:43:13,961 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2024-11-01 21:43:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 21:43:14,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-01 21:43:14,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 21:43:14,020 INFO L225 Difference]: With dead ends: 21 [2024-11-01 21:43:14,021 INFO L226 Difference]: Without dead ends: 13 [2024-11-01 21:43:14,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-01 21:43:14,029 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2024-11-01 21:43:14,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2024-11-01 21:43:14,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-01 21:43:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-11-01 21:43:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 21:43:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-01 21:43:14,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2024-11-01 21:43:14,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 21:43:14,054 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-01 21:43:14,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 21:43:14,055 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-01 21:43:14,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-01 21:43:14,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 21:43:14,055 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-01 21:43:14,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-01 21:43:14,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 21:43:14,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 21:43:14,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 21:43:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 1 times [2024-11-01 21:43:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 21:43:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709418798] [2024-11-01 21:43:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 21:43:14,259 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-01 21:43:14,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-01 21:43:14,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-01 21:43:14,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-01 21:43:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 21:43:15,729 WARN L253 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 670 conjuncts are in the unsatisfiable core [2024-11-01 21:43:15,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 21:43:30,056 WARN L286 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 726 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)