/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.twocount2c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 20:55:12,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 20:55:12,996 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 20:55:13,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 20:55:13,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 20:55:13,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 20:55:13,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 20:55:13,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 20:55:13,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 20:55:13,028 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 20:55:13,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 20:55:13,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 20:55:13,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 20:55:13,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 20:55:13,030 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 20:55:13,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 20:55:13,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 20:55:13,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 20:55:13,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 20:55:13,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 20:55:13,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 20:55:13,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 20:55:13,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 20:55:13,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 20:55:13,031 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 20:55:13,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 20:55:13,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 20:55:13,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 20:55:13,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 20:55:13,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 20:55:13,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 20:55:13,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 20:55:13,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 20:55:13,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 20:55:13,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 20:55:13,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 20:55:13,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 20:55:13,034 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 20:55:13,034 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 20:55:13,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 20:55:13,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 20:55:13,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 20:55:13,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 20:55:13,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 20:55:13,237 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 20:55:13,237 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 20:55:13,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2023-12-16 20:55:14,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 20:55:14,432 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 20:55:14,433 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.twocount2c.c [2023-12-16 20:55:14,440 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d9859dd/8a4992cbf55643a098004ce00e94d0e7/FLAGc2584bca1 [2023-12-16 20:55:14,854 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d9859dd/8a4992cbf55643a098004ce00e94d0e7 [2023-12-16 20:55:14,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 20:55:14,858 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 20:55:14,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 20:55:14,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 20:55:14,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 20:55:14,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:55:14" (1/1) ... [2023-12-16 20:55:14,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b18bd8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:14, skipping insertion in model container [2023-12-16 20:55:14,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:55:14" (1/1) ... [2023-12-16 20:55:14,891 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 20:55:15,122 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.twocount2c.c[1260,1273] [2023-12-16 20:55:15,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 20:55:15,186 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 20:55:15,220 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.twocount2c.c[1260,1273] [2023-12-16 20:55:15,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 20:55:15,268 INFO L206 MainTranslator]: Completed translation [2023-12-16 20:55:15,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15 WrapperNode [2023-12-16 20:55:15,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 20:55:15,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 20:55:15,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 20:55:15,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 20:55:15,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,346 INFO L138 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 117 [2023-12-16 20:55:15,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 20:55:15,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 20:55:15,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 20:55:15,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 20:55:15,355 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,363 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,387 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 20:55:15,387 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,392 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,393 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 20:55:15,395 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 20:55:15,395 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 20:55:15,395 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 20:55:15,395 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (1/1) ... [2023-12-16 20:55:15,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 20:55:15,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:55:15,469 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 20:55:15,474 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 20:55:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 20:55:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 20:55:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 20:55:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 20:55:15,603 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 20:55:15,605 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 20:55:15,805 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 20:55:15,833 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 20:55:15,833 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 20:55:15,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:55:15 BoogieIcfgContainer [2023-12-16 20:55:15,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 20:55:15,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 20:55:15,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 20:55:15,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 20:55:15,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:55:14" (1/3) ... [2023-12-16 20:55:15,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624818d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:55:15, skipping insertion in model container [2023-12-16 20:55:15,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:55:15" (2/3) ... [2023-12-16 20:55:15,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624818d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:55:15, skipping insertion in model container [2023-12-16 20:55:15,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:55:15" (3/3) ... [2023-12-16 20:55:15,839 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount2c.c [2023-12-16 20:55:15,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 20:55:15,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 20:55:15,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 20:55:15,882 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;@6d7e4cc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 20:55:15,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 20:55:15,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 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 20:55:15,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 20:55:15,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:55:15,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 20:55:15,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:55:15,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:55:15,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1956421740, now seen corresponding path program 1 times [2023-12-16 20:55:15,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:55:15,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866998072] [2023-12-16 20:55:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:55:15,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:55:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:55:16,001 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 20:55:16,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:55:16,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866998072] [2023-12-16 20:55:16,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866998072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:55:16,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:55:16,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 20:55:16,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900554727] [2023-12-16 20:55:16,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:55:16,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 20:55:16,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:55:16,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 20:55:16,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 20:55:16,025 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 20:55:16,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:55:16,037 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2023-12-16 20:55:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 20:55:16,039 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-12-16 20:55:16,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:55:16,044 INFO L225 Difference]: With dead ends: 17 [2023-12-16 20:55:16,044 INFO L226 Difference]: Without dead ends: 8 [2023-12-16 20:55:16,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 20:55:16,048 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:55:16,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:55:16,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-12-16 20:55:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-12-16 20:55:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2023-12-16 20:55:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-16 20:55:16,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-12-16 20:55:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:55:16,069 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-16 20:55:16,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 20:55:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-16 20:55:16,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 20:55:16,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:55:16,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 20:55:16,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 20:55:16,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:55:16,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:55:16,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1956481322, now seen corresponding path program 1 times [2023-12-16 20:55:16,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:55:16,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203493207] [2023-12-16 20:55:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:55:16,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:55:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 20:55:16,098 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-16 20:55:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 20:55:16,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-16 20:55:16,157 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-16 20:55:16,158 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 20:55:16,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 20:55:16,162 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-16 20:55:16,164 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 20:55:16,173 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-16 20:55:16,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 08:55:16 BoogieIcfgContainer [2023-12-16 20:55:16,179 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 20:55:16,180 INFO L158 Benchmark]: Toolchain (without parser) took 1321.64ms. Allocated memory is still 162.5MB. Free memory was 127.8MB in the beginning and 67.2MB in the end (delta: 60.6MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. [2023-12-16 20:55:16,180 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 162.5MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 20:55:16,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.61ms. Allocated memory is still 162.5MB. Free memory was 127.4MB in the beginning and 114.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 20:55:16,181 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.88ms. Allocated memory is still 162.5MB. Free memory was 114.8MB in the beginning and 112.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 20:55:16,181 INFO L158 Benchmark]: Boogie Preprocessor took 47.12ms. Allocated memory is still 162.5MB. Free memory was 112.7MB in the beginning and 110.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 20:55:16,181 INFO L158 Benchmark]: RCFGBuilder took 438.67ms. Allocated memory is still 162.5MB. Free memory was 110.6MB in the beginning and 96.6MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 20:55:16,181 INFO L158 Benchmark]: TraceAbstraction took 344.34ms. Allocated memory is still 162.5MB. Free memory was 95.9MB in the beginning and 67.2MB in the end (delta: 28.7MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-12-16 20:55:16,183 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 162.5MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 409.61ms. Allocated memory is still 162.5MB. Free memory was 127.4MB in the beginning and 114.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 75.88ms. Allocated memory is still 162.5MB. Free memory was 114.8MB in the beginning and 112.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.12ms. Allocated memory is still 162.5MB. Free memory was 112.7MB in the beginning and 110.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 438.67ms. Allocated memory is still 162.5MB. Free memory was 110.6MB in the beginning and 96.6MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 344.34ms. Allocated memory is still 162.5MB. Free memory was 95.9MB in the beginning and 67.2MB in the end (delta: 28.7MB). Peak memory consumption was 28.3MB. 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: 22]: 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 bitwise operation at line 69. Possible FailurePath: [L27] EXPR (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1) [L27] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L28] EXPR (SORT_1)1 << (1 - 1) [L28] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L30] EXPR (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 2) [L30] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 2); [L31] EXPR (SORT_2)1 << (2 - 1) [L31] const SORT_2 msb_SORT_2 = (SORT_2)1 << (2 - 1); [L33] const SORT_2 var_5 = 0; [L34] const SORT_2 var_10 = 1; [L35] const SORT_2 var_17 = mask_SORT_2; [L37] SORT_1 input_3; [L38] SORT_1 input_4; [L40] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L40] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L41] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L41] SORT_2 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L43] SORT_2 init_8_arg_1 = var_5; [L44] state_6 = init_8_arg_1 [L45] SORT_2 init_9_arg_1 = var_5; [L46] state_7 = init_9_arg_1 VAL [init_8_arg_1=0, init_9_arg_1=0, mask_SORT_1=0, mask_SORT_2=0, msb_SORT_1=0, msb_SORT_2=0, state_6=0, state_7=0, var_10=1, var_17=0, var_5=0] [L49] input_3 = __VERIFIER_nondet_uchar() [L50] EXPR input_3 & mask_SORT_1 [L50] input_3 = input_3 & mask_SORT_1 [L51] input_4 = __VERIFIER_nondet_uchar() [L52] EXPR input_4 & mask_SORT_1 [L52] input_4 = input_4 & mask_SORT_1 [L54] SORT_1 var_22_arg_0 = input_3; [L55] SORT_1 var_22_arg_1 = input_4; [L56] EXPR var_22_arg_0 & var_22_arg_1 [L56] SORT_1 var_22 = ~(var_22_arg_0 & var_22_arg_1); [L57] EXPR var_22 & mask_SORT_1 [L57] var_22 = var_22 & mask_SORT_1 [L58] SORT_1 constr_23_arg_0 = var_22; [L59] CALL assume_abort_if_not(constr_23_arg_0) [L23] COND FALSE !(!cond) VAL [\old(cond)=4, cond=4] [L59] RET assume_abort_if_not(constr_23_arg_0) [L61] SORT_2 var_18_arg_0 = state_6; [L62] SORT_2 var_18_arg_1 = var_17; [L63] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L64] SORT_2 var_19_arg_0 = state_7; [L65] SORT_2 var_19_arg_1 = var_17; [L66] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L67] SORT_1 var_20_arg_0 = var_18; [L68] SORT_1 var_20_arg_1 = var_19; [L69] EXPR var_20_arg_0 & var_20_arg_1 [L69] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L70] EXPR var_20 & mask_SORT_1 [L70] var_20 = var_20 & mask_SORT_1 [L71] SORT_1 bad_21_arg_0 = var_20; [L72] CALL __VERIFIER_assert(!(bad_21_arg_0)) [L22] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L22] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1 IncrementalHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 7 mSDtfsCounter, 1 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 20:55:16,204 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...