/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.synabs2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:55:27,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:55:27,861 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 19:55:27,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:55:27,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:55:27,897 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:55:27,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:55:27,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:55:27,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:55:27,899 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:55:27,899 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:55:27,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:55:27,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:55:27,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:55:27,901 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:55:27,901 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:55:27,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:55:27,902 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:55:27,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:55:27,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:55:27,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:55:27,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:55:27,904 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:55:27,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:55:27,905 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:55:27,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:55:27,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:55:27,906 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:55:27,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:55:27,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:55:27,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:55:27,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:55:27,907 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:55:27,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:55:27,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:55:27,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:55:27,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:55:27,908 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:55:27,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:55:27,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:55:27,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:55:28,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:55:28,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:55:28,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:55:28,176 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:55:28,176 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:55:28,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.synabs2.c [2023-12-16 19:55:29,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:55:29,566 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:55:29,567 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.synabs2.c [2023-12-16 19:55:29,574 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e19b946/b54aa0f138ca4210a4d6a9ae17731ec6/FLAG616a72401 [2023-12-16 19:55:29,586 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e19b946/b54aa0f138ca4210a4d6a9ae17731ec6 [2023-12-16 19:55:29,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:55:29,590 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:55:29,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:55:29,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:55:29,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:55:29,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439f8730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29, skipping insertion in model container [2023-12-16 19:55:29,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,616 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:55:29,729 WARN L239 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.synabs2.c[1247,1260] [2023-12-16 19:55:29,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:55:29,793 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:55:29,801 WARN L239 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.synabs2.c[1247,1260] [2023-12-16 19:55:29,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:55:29,830 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:55:29,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29 WrapperNode [2023-12-16 19:55:29,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:55:29,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:55:29,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:55:29,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:55:29,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,892 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 162 [2023-12-16 19:55:29,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:55:29,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:55:29,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:55:29,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:55:29,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,908 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,922 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]. [2023-12-16 19:55:29,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,934 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:55:29,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:55:29,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:55:29,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:55:29,945 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (1/1) ... [2023-12-16 19:55:29,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:55:29,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:55:29,975 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) [2023-12-16 19:55:29,996 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 [2023-12-16 19:55:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:55:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:55:30,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:55:30,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:55:30,109 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:55:30,112 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:55:30,401 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:55:30,461 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:55:30,461 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:55:30,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:55:30 BoogieIcfgContainer [2023-12-16 19:55:30,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:55:30,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:55:30,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:55:30,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:55:30,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:55:29" (1/3) ... [2023-12-16 19:55:30,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f7b03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:55:30, skipping insertion in model container [2023-12-16 19:55:30,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:55:29" (2/3) ... [2023-12-16 19:55:30,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f7b03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:55:30, skipping insertion in model container [2023-12-16 19:55:30,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:55:30" (3/3) ... [2023-12-16 19:55:30,470 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.synabs2.c [2023-12-16 19:55:30,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:55:30,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:55:30,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:55:30,540 INFO L357 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, mHoare=true, 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;@5ecbc1f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:55:30,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:55:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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) [2023-12-16 19:55:30,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-16 19:55:30,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:30,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:30,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:30,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:30,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1310705114, now seen corresponding path program 1 times [2023-12-16 19:55:30,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:30,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559691797] [2023-12-16 19:55:30,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:30,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:30,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:30,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559691797] [2023-12-16 19:55:30,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559691797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:30,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:30,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:55:30,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894065038] [2023-12-16 19:55:30,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:30,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:55:30,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:31,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:55:31,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:55:31,022 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-12-16 19:55:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:31,070 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2023-12-16 19:55:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:55:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) Word has length 12 [2023-12-16 19:55:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:31,081 INFO L225 Difference]: With dead ends: 57 [2023-12-16 19:55:31,081 INFO L226 Difference]: Without dead ends: 32 [2023-12-16 19:55:31,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:55:31,088 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:31,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:55:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-16 19:55:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-16 19:55:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 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) [2023-12-16 19:55:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 48 transitions. [2023-12-16 19:55:31,129 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 48 transitions. Word has length 12 [2023-12-16 19:55:31,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:31,129 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 48 transitions. [2023-12-16 19:55:31,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-12-16 19:55:31,129 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 48 transitions. [2023-12-16 19:55:31,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 19:55:31,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:31,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:31,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:55:31,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:31,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1975427874, now seen corresponding path program 1 times [2023-12-16 19:55:31,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:31,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543987015] [2023-12-16 19:55:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:31,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:31,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:31,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543987015] [2023-12-16 19:55:31,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543987015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:31,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:31,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:55:31,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108969250] [2023-12-16 19:55:31,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:31,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:55:31,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:55:31,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:55:31,278 INFO L87 Difference]: Start difference. First operand 32 states and 48 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-12-16 19:55:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:31,305 INFO L93 Difference]: Finished difference Result 60 states and 89 transitions. [2023-12-16 19:55:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:55:31,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-12-16 19:55:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:31,306 INFO L225 Difference]: With dead ends: 60 [2023-12-16 19:55:31,306 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 19:55:31,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:55:31,307 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:31,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 122 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:55:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 19:55:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-12-16 19:55:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 states have internal predecessors, (50), 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) [2023-12-16 19:55:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 50 transitions. [2023-12-16 19:55:31,312 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 50 transitions. Word has length 13 [2023-12-16 19:55:31,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:31,312 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 50 transitions. [2023-12-16 19:55:31,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-12-16 19:55:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 50 transitions. [2023-12-16 19:55:31,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 19:55:31,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:31,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:31,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:55:31,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:31,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1319154368, now seen corresponding path program 1 times [2023-12-16 19:55:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662949735] [2023-12-16 19:55:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:31,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:55:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:55:31,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:55:31,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662949735] [2023-12-16 19:55:31,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662949735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:55:31,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:55:31,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 19:55:31,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535764888] [2023-12-16 19:55:31,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:55:31,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:55:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:55:31,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:55:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:55:31,467 INFO L87 Difference]: Start difference. First operand 34 states and 50 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-16 19:55:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:55:31,523 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2023-12-16 19:55:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:55:31,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-12-16 19:55:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:55:31,524 INFO L225 Difference]: With dead ends: 62 [2023-12-16 19:55:31,524 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 19:55:31,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:55:31,525 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 72 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:55:31,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:55:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 19:55:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-12-16 19:55:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 33 states have internal predecessors, (49), 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) [2023-12-16 19:55:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2023-12-16 19:55:31,531 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 14 [2023-12-16 19:55:31,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:55:31,531 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2023-12-16 19:55:31,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-16 19:55:31,531 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2023-12-16 19:55:31,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 19:55:31,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:55:31,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:55:31,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:55:31,536 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:55:31,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:55:31,536 INFO L85 PathProgramCache]: Analyzing trace with hash 455852994, now seen corresponding path program 1 times [2023-12-16 19:55:31,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:55:31,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540755150] [2023-12-16 19:55:31,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:55:31,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:55:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 19:55:31,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-16 19:55:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 19:55:31,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-16 19:55:31,592 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-16 19:55:31,593 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:55:31,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:55:31,599 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-16 19:55:31,603 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:55:31,631 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-16 19:55:31,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:55:31 BoogieIcfgContainer [2023-12-16 19:55:31,648 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:55:31,648 INFO L158 Benchmark]: Toolchain (without parser) took 2058.90ms. Allocated memory is still 185.6MB. Free memory was 141.9MB in the beginning and 79.1MB in the end (delta: 62.7MB). Peak memory consumption was 64.3MB. Max. memory is 8.0GB. [2023-12-16 19:55:31,649 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:55:31,649 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.80ms. Allocated memory is still 185.6MB. Free memory was 141.5MB in the beginning and 129.6MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 19:55:31,649 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.66ms. Allocated memory is still 185.6MB. Free memory was 129.6MB in the beginning and 125.5MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 19:55:31,649 INFO L158 Benchmark]: Boogie Preprocessor took 49.76ms. Allocated memory is still 185.6MB. Free memory was 125.5MB in the beginning and 123.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 19:55:31,650 INFO L158 Benchmark]: RCFGBuilder took 518.40ms. Allocated memory is still 185.6MB. Free memory was 122.7MB in the beginning and 160.4MB in the end (delta: -37.7MB). Peak memory consumption was 26.6MB. Max. memory is 8.0GB. [2023-12-16 19:55:31,650 INFO L158 Benchmark]: TraceAbstraction took 1183.99ms. Allocated memory is still 185.6MB. Free memory was 159.9MB in the beginning and 79.1MB in the end (delta: 80.7MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2023-12-16 19:55:31,651 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 240.80ms. Allocated memory is still 185.6MB. Free memory was 141.5MB in the beginning and 129.6MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.66ms. Allocated memory is still 185.6MB. Free memory was 129.6MB in the beginning and 125.5MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.76ms. Allocated memory is still 185.6MB. Free memory was 125.5MB in the beginning and 123.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 518.40ms. Allocated memory is still 185.6MB. Free memory was 122.7MB in the beginning and 160.4MB in the end (delta: -37.7MB). Peak memory consumption was 26.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1183.99ms. Allocated memory is still 185.6MB. Free memory was 159.9MB in the beginning and 79.1MB in the end (delta: 80.7MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 63. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 5); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (5 - 1); [L32] const SORT_19 mask_SORT_19 = (SORT_19)-1 >> (sizeof(SORT_19) * 8 - 32); [L33] const SORT_19 msb_SORT_19 = (SORT_19)1 << (32 - 1); [L35] const SORT_4 var_5 = 0; [L36] const SORT_4 var_8 = 6; [L37] const SORT_1 var_14 = 1; [L38] const SORT_19 var_21 = 2; [L40] SORT_1 input_2; [L41] SORT_1 input_3; [L43] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_19=4294967295, mask_SORT_1=1, mask_SORT_4=31, msb_SORT_19=2147483648, msb_SORT_1=1, msb_SORT_4=16, var_14=1, var_21=2, var_5=0, var_8=6] [L43] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L44] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_19=4294967295, mask_SORT_1=1, mask_SORT_4=31, msb_SORT_19=2147483648, msb_SORT_1=1, msb_SORT_4=16, state_6=0, var_14=1, var_21=2, var_5=0, var_8=6] [L44] SORT_4 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L46] SORT_4 init_7_arg_1 = var_5; [L47] state_6 = init_7_arg_1 [L48] SORT_4 init_10_arg_1 = var_8; [L49] state_9 = init_10_arg_1 VAL [init_10_arg_1=6, init_7_arg_1=0, mask_SORT_19=4294967295, mask_SORT_1=1, mask_SORT_4=31, msb_SORT_19=2147483648, msb_SORT_1=1, msb_SORT_4=16, state_6=0, state_9=6, var_14=1, var_21=2, var_5=0, var_8=6] [L52] input_2 = __VERIFIER_nondet_uchar() [L53] input_3 = __VERIFIER_nondet_uchar() [L56] SORT_4 var_11_arg_0 = state_6; [L57] SORT_4 var_11_arg_1 = state_9; [L58] SORT_1 var_11 = var_11_arg_0 < var_11_arg_1; [L59] SORT_1 var_15_arg_0 = var_11; [L60] SORT_1 var_15 = ~var_15_arg_0; [L61] SORT_1 var_16_arg_0 = var_14; [L62] SORT_1 var_16_arg_1 = var_15; VAL [init_10_arg_1=6, init_7_arg_1=0, mask_SORT_19=4294967295, mask_SORT_1=1, mask_SORT_4=31, msb_SORT_19=2147483648, msb_SORT_1=1, msb_SORT_4=16, state_6=0, state_9=6, var_11=1, var_11_arg_0=0, var_11_arg_1=6, var_14=1, var_15=254, var_15_arg_0=1, var_16_arg_0=1, var_16_arg_1=254, var_21=2, var_5=0, var_8=6] [L63] EXPR var_16_arg_0 & var_16_arg_1 VAL [init_10_arg_1=6, init_7_arg_1=0, mask_SORT_19=4294967295, mask_SORT_1=1, mask_SORT_4=31, msb_SORT_19=2147483648, msb_SORT_1=1, msb_SORT_4=16, state_6=0, state_9=6, var_11=1, var_11_arg_0=0, var_11_arg_1=6, var_14=1, var_15=254, var_15_arg_0=1, var_16_arg_0=1, var_16_arg_1=254, var_21=2, var_5=0, var_8=6] [L63] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L64] EXPR var_16 & mask_SORT_1 VAL [init_10_arg_1=6, init_7_arg_1=0, mask_SORT_19=4294967295, mask_SORT_1=1, mask_SORT_4=31, msb_SORT_19=2147483648, msb_SORT_1=1, msb_SORT_4=16, state_6=0, state_9=6, var_11=1, var_11_arg_0=0, var_11_arg_1=6, var_14=1, var_15=254, var_15_arg_0=1, var_16=1, var_16_arg_0=1, var_16_arg_1=254, var_21=2, var_5=0, var_8=6] [L64] var_16 = var_16 & mask_SORT_1 [L65] SORT_1 bad_17_arg_0 = var_16; [L66] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 296 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 170 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 126 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-16 19:55:31,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...