/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.h_traffic_light_example.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:30:10,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:30:10,526 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 19:30:10,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:30:10,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:30:10,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:30:10,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:30:10,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:30:10,553 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:30:10,554 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:30:10,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:30:10,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:30:10,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:30:10,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:30:10,555 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:30:10,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:30:10,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:30:10,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:30:10,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:30:10,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:30:10,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:30:10,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:30:10,559 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:30:10,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:30:10,560 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:30:10,560 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:30:10,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:30:10,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:30:10,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:30:10,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:30:10,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:30:10,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:30:10,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:30:10,562 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:30:10,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:30:10,562 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:30:10,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:30:10,562 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:30:10,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:30:10,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:30:10,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:30:10,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:30:10,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:30:10,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:30:10,769 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:30:10,770 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:30:10,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c [2023-12-16 19:30:11,851 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:30:12,006 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:30:12,006 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_traffic_light_example.c [2023-12-16 19:30:12,012 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17e53491/d6fe09ac57b04ef691b80121b3f738b6/FLAG84e876de0 [2023-12-16 19:30:12,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17e53491/d6fe09ac57b04ef691b80121b3f738b6 [2023-12-16 19:30:12,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:30:12,028 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:30:12,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:30:12,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:30:12,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:30:12,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da8312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12, skipping insertion in model container [2023-12-16 19:30:12,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,065 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:30:12,188 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.h_traffic_light_example.c[1263,1276] [2023-12-16 19:30:12,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:30:12,286 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:30:12,299 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.h_traffic_light_example.c[1263,1276] [2023-12-16 19:30:12,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:30:12,356 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:30:12,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12 WrapperNode [2023-12-16 19:30:12,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:30:12,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:30:12,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:30:12,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:30:12,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,423 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 302 [2023-12-16 19:30:12,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:30:12,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:30:12,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:30:12,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:30:12,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,446 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,484 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 19:30:12,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:30:12,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:30:12,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:30:12,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:30:12,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (1/1) ... [2023-12-16 19:30:12,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:30:12,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:30:12,557 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 19:30:12,572 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 19:30:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:30:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:30:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:30:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:30:12,675 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:30:12,676 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:30:13,003 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:30:13,022 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:30:13,022 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:30:13,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:30:13 BoogieIcfgContainer [2023-12-16 19:30:13,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:30:13,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:30:13,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:30:13,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:30:13,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:30:12" (1/3) ... [2023-12-16 19:30:13,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452158f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:30:13, skipping insertion in model container [2023-12-16 19:30:13,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:30:12" (2/3) ... [2023-12-16 19:30:13,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452158f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:30:13, skipping insertion in model container [2023-12-16 19:30:13,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:30:13" (3/3) ... [2023-12-16 19:30:13,028 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_traffic_light_example.c [2023-12-16 19:30:13,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:30:13,040 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:30:13,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:30:13,079 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;@7a814057, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:30:13,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:30:13,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 40 states have internal predecessors, (65), 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 19:30:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 19:30:13,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:13,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:13,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:13,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:13,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2112538219, now seen corresponding path program 1 times [2023-12-16 19:30:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:13,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367782095] [2023-12-16 19:30:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:13,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:13,469 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 19:30:13,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:13,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367782095] [2023-12-16 19:30:13,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367782095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:13,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:30:13,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:30:13,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935888683] [2023-12-16 19:30:13,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:13,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:30:13,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:13,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:30:13,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:30:13,502 INFO L87 Difference]: Start difference. First operand has 41 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 40 states have internal predecessors, (65), 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 3.5) internal successors, (14), 4 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 19:30:13,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:13,555 INFO L93 Difference]: Finished difference Result 75 states and 121 transitions. [2023-12-16 19:30:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:30:13,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:30:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:13,564 INFO L225 Difference]: With dead ends: 75 [2023-12-16 19:30:13,564 INFO L226 Difference]: Without dead ends: 41 [2023-12-16 19:30:13,566 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 19:30:13,607 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 1 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 169 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 19:30:13,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 169 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:30:13,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-16 19:30:13,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-16 19:30:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.575) internal successors, (63), 40 states have internal predecessors, (63), 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 19:30:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 63 transitions. [2023-12-16 19:30:13,640 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 63 transitions. Word has length 14 [2023-12-16 19:30:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:13,640 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 63 transitions. [2023-12-16 19:30:13,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 19:30:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 63 transitions. [2023-12-16 19:30:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 19:30:13,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:13,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:13,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:30:13,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:13,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1065900357, now seen corresponding path program 1 times [2023-12-16 19:30:13,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:13,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668131579] [2023-12-16 19:30:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:13,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:13,754 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 19:30:13,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:13,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668131579] [2023-12-16 19:30:13,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668131579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:13,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:30:13,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:30:13,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820994357] [2023-12-16 19:30:13,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:13,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:30:13,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:13,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:30:13,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:30:13,761 INFO L87 Difference]: Start difference. First operand 41 states and 63 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 19:30:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:13,783 INFO L93 Difference]: Finished difference Result 78 states and 119 transitions. [2023-12-16 19:30:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:30:13,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2023-12-16 19:30:13,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:13,784 INFO L225 Difference]: With dead ends: 78 [2023-12-16 19:30:13,784 INFO L226 Difference]: Without dead ends: 44 [2023-12-16 19:30:13,785 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 19:30:13,785 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 1 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 167 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 19:30:13,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 167 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:30:13,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-16 19:30:13,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2023-12-16 19:30:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 42 states have internal predecessors, (65), 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 19:30:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 65 transitions. [2023-12-16 19:30:13,789 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 65 transitions. Word has length 15 [2023-12-16 19:30:13,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:13,789 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 65 transitions. [2023-12-16 19:30:13,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 19:30:13,789 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 65 transitions. [2023-12-16 19:30:13,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 19:30:13,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:13,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:13,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:30:13,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:13,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:13,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1527259707, now seen corresponding path program 1 times [2023-12-16 19:30:13,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:13,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437203834] [2023-12-16 19:30:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:13,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:13,905 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 19:30:13,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:13,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437203834] [2023-12-16 19:30:13,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437203834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:13,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:30:13,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:30:13,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635467262] [2023-12-16 19:30:13,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:13,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:30:13,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:13,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:30:13,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:30:13,909 INFO L87 Difference]: Start difference. First operand 43 states and 65 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 19:30:13,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:13,947 INFO L93 Difference]: Finished difference Result 83 states and 125 transitions. [2023-12-16 19:30:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:30:13,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2023-12-16 19:30:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:13,950 INFO L225 Difference]: With dead ends: 83 [2023-12-16 19:30:13,950 INFO L226 Difference]: Without dead ends: 47 [2023-12-16 19:30:13,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:30:13,954 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 101 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:13,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 90 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:30:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-16 19:30:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2023-12-16 19:30:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 42 states have internal predecessors, (64), 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 19:30:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 64 transitions. [2023-12-16 19:30:13,965 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 64 transitions. Word has length 16 [2023-12-16 19:30:13,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:13,965 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 64 transitions. [2023-12-16 19:30:13,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 19:30:13,965 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 64 transitions. [2023-12-16 19:30:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 19:30:13,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:13,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:13,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:30:13,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:13,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash 247747655, now seen corresponding path program 1 times [2023-12-16 19:30:13,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:13,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714789892] [2023-12-16 19:30:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:13,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 19:30:13,996 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-16 19:30:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 19:30:14,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-16 19:30:14,041 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-16 19:30:14,041 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:30:14,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:30:14,045 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-16 19:30:14,047 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:30:14,069 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-16 19:30:14,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:30:14 BoogieIcfgContainer [2023-12-16 19:30:14,075 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:30:14,075 INFO L158 Benchmark]: Toolchain (without parser) took 2047.46ms. Allocated memory is still 237.0MB. Free memory was 192.0MB in the beginning and 135.5MB in the end (delta: 56.5MB). Peak memory consumption was 57.5MB. Max. memory is 8.0GB. [2023-12-16 19:30:14,075 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 164.6MB. Free memory is still 113.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:30:14,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.61ms. Allocated memory is still 237.0MB. Free memory was 191.5MB in the beginning and 175.7MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 19:30:14,076 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.56ms. Allocated memory is still 237.0MB. Free memory was 175.7MB in the beginning and 170.0MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 19:30:14,076 INFO L158 Benchmark]: Boogie Preprocessor took 93.42ms. Allocated memory is still 237.0MB. Free memory was 170.0MB in the beginning and 164.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 19:30:14,076 INFO L158 Benchmark]: RCFGBuilder took 504.63ms. Allocated memory is still 237.0MB. Free memory was 164.7MB in the beginning and 130.7MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-16 19:30:14,076 INFO L158 Benchmark]: TraceAbstraction took 1051.26ms. Allocated memory is still 237.0MB. Free memory was 130.1MB in the beginning and 135.5MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:30:14,077 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 164.6MB. Free memory is still 113.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 327.61ms. Allocated memory is still 237.0MB. Free memory was 191.5MB in the beginning and 175.7MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.56ms. Allocated memory is still 237.0MB. Free memory was 175.7MB in the beginning and 170.0MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 93.42ms. Allocated memory is still 237.0MB. Free memory was 170.0MB in the beginning and 164.7MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 504.63ms. Allocated memory is still 237.0MB. Free memory was 164.7MB in the beginning and 130.7MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1051.26ms. Allocated memory is still 237.0MB. Free memory was 130.1MB in the beginning and 135.5MB in the end (delta: -5.4MB). There was no memory consumed. 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 75. 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 - 8); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (8 - 1); [L32] const SORT_16 mask_SORT_16 = (SORT_16)-1 >> (sizeof(SORT_16) * 8 - 2); [L33] const SORT_16 msb_SORT_16 = (SORT_16)1 << (2 - 1); [L35] const SORT_44 mask_SORT_44 = (SORT_44)-1 >> (sizeof(SORT_44) * 8 - 32); [L36] const SORT_44 msb_SORT_44 = (SORT_44)1 << (32 - 1); [L38] const SORT_4 var_5 = 0; [L39] const SORT_4 var_8 = 255; [L40] const SORT_1 var_12 = 1; [L41] const SORT_16 var_17 = 0; [L42] const SORT_4 var_21 = 1; [L43] const SORT_4 var_23 = 63; [L44] const SORT_4 var_29 = 7; [L45] const SORT_16 var_35 = 2; [L46] const SORT_16 var_38 = 1; [L47] const SORT_44 var_45 = 0; [L48] const SORT_44 var_46 = 1; [L49] const SORT_44 var_52 = 2; [L51] SORT_1 input_2; [L52] SORT_1 input_3; [L54] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_16=3, mask_SORT_1=1, mask_SORT_44=4294967295, mask_SORT_4=255, msb_SORT_16=2, msb_SORT_1=1, msb_SORT_44=2147483648, msb_SORT_4=128, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L54] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L55] EXPR __VERIFIER_nondet_uchar() & mask_SORT_16 VAL [mask_SORT_16=3, mask_SORT_1=1, mask_SORT_44=4294967295, mask_SORT_4=255, msb_SORT_16=2, msb_SORT_1=1, msb_SORT_44=2147483648, msb_SORT_4=128, state_6=0, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L55] SORT_16 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_16; [L57] SORT_4 init_7_arg_1 = var_5; [L58] state_6 = init_7_arg_1 [L59] SORT_16 init_19_arg_1 = var_17; [L60] state_18 = init_19_arg_1 VAL [init_19_arg_1=0, init_7_arg_1=0, mask_SORT_16=3, mask_SORT_1=1, mask_SORT_44=4294967295, mask_SORT_4=255, msb_SORT_16=2, msb_SORT_1=1, msb_SORT_44=2147483648, msb_SORT_4=128, state_18=0, state_6=0, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L63] input_2 = __VERIFIER_nondet_uchar() [L64] input_3 = __VERIFIER_nondet_uchar() [L65] EXPR input_3 & mask_SORT_1 VAL [init_19_arg_1=0, init_7_arg_1=0, input_3=0, mask_SORT_16=3, mask_SORT_1=1, mask_SORT_44=4294967295, mask_SORT_4=255, msb_SORT_16=2, msb_SORT_1=1, msb_SORT_44=2147483648, msb_SORT_4=128, state_18=0, state_6=0, var_12=1, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255] [L65] input_3 = input_3 & mask_SORT_1 [L68] SORT_4 var_9_arg_0 = state_6; [L69] SORT_4 var_9_arg_1 = var_8; [L70] SORT_1 var_9 = var_9_arg_0 != var_9_arg_1; [L71] SORT_1 var_13_arg_0 = var_9; [L72] SORT_1 var_13 = ~var_13_arg_0; [L73] SORT_1 var_14_arg_0 = var_12; [L74] SORT_1 var_14_arg_1 = var_13; VAL [init_19_arg_1=0, init_7_arg_1=0, input_3=0, mask_SORT_16=3, mask_SORT_1=1, mask_SORT_44=4294967295, mask_SORT_4=255, msb_SORT_16=2, msb_SORT_1=1, msb_SORT_44=2147483648, msb_SORT_4=128, state_18=0, state_6=0, var_12=1, var_13=254, var_13_arg_0=1, var_14_arg_0=1, var_14_arg_1=254, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255, var_9=1, var_9_arg_0=0, var_9_arg_1=255] [L75] EXPR var_14_arg_0 & var_14_arg_1 VAL [init_19_arg_1=0, init_7_arg_1=0, input_3=0, mask_SORT_16=3, mask_SORT_1=1, mask_SORT_44=4294967295, mask_SORT_4=255, msb_SORT_16=2, msb_SORT_1=1, msb_SORT_44=2147483648, msb_SORT_4=128, state_18=0, state_6=0, var_12=1, var_13=254, var_13_arg_0=1, var_14_arg_0=1, var_14_arg_1=254, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255, var_9=1, var_9_arg_0=0, var_9_arg_1=255] [L75] SORT_1 var_14 = var_14_arg_0 & var_14_arg_1; [L76] EXPR var_14 & mask_SORT_1 VAL [init_19_arg_1=0, init_7_arg_1=0, input_3=0, mask_SORT_16=3, mask_SORT_1=1, mask_SORT_44=4294967295, mask_SORT_4=255, msb_SORT_16=2, msb_SORT_1=1, msb_SORT_44=2147483648, msb_SORT_4=128, state_18=0, state_6=0, var_12=1, var_13=254, var_13_arg_0=1, var_14=1, var_14_arg_0=1, var_14_arg_1=254, var_17=0, var_21=1, var_23=63, var_29=7, var_35=2, var_38=1, var_45=0, var_46=1, var_52=2, var_5=0, var_8=255, var_9=1, var_9_arg_0=0, var_9_arg_1=255] [L76] var_14 = var_14 & mask_SORT_1 [L77] SORT_1 bad_15_arg_0 = var_14; [L78] CALL __VERIFIER_assert(!(bad_15_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, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 426 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 250 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 176 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 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 19:30:14,095 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...