/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-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-lit/as2013-hybrid.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:50:04,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:50:04,218 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:50:04,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:50:04,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:50:04,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:50:04,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:50:04,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:50:04,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:50:04,247 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:50:04,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:50:04,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:50:04,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:50:04,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:50:04,249 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:50:04,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:50:04,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:50:04,249 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:50:04,249 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:50:04,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:50:04,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:50:04,250 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:50:04,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:50:04,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:50:04,250 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:50:04,251 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:50:04,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:50:04,251 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:50:04,251 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:50:04,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:50:04,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:50:04,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:50:04,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:50:04,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:50:04,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:50:04,253 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:50:04,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:50:04,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:50:04,253 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:50:04,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:50:04,253 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:50:04,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:50:04,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:50:04,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:50:04,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:50:04,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:50:04,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:50:04,449 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:50:04,451 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:50:04,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/as2013-hybrid.i [2023-12-16 04:50:05,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:50:05,547 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:50:05,548 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/as2013-hybrid.i [2023-12-16 04:50:05,553 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bec18b40/7d0d0a5354e54de9b028d47495d9ba24/FLAG65ddbc9e3 [2023-12-16 04:50:05,562 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bec18b40/7d0d0a5354e54de9b028d47495d9ba24 [2023-12-16 04:50:05,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:50:05,564 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:50:05,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:50:05,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:50:05,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:50:05,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39099b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05, skipping insertion in model container [2023-12-16 04:50:05,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,583 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:50:05,672 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/as2013-hybrid.i[802,815] [2023-12-16 04:50:05,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:50:05,685 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:50:05,693 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/as2013-hybrid.i[802,815] [2023-12-16 04:50:05,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:50:05,707 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:50:05,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05 WrapperNode [2023-12-16 04:50:05,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:50:05,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:50:05,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:50:05,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:50:05,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,728 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2023-12-16 04:50:05,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:50:05,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:50:05,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:50:05,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:50:05,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,742 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 04:50:05,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:50:05,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:50:05,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:50:05,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:50:05,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:50:05,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:05,777 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 04:50:05,786 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 04:50:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:50:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:50:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:50:05,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:50:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 04:50:05,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 04:50:05,840 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:50:05,842 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:50:05,918 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:50:05,931 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:50:05,931 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 04:50:05,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:50:05 BoogieIcfgContainer [2023-12-16 04:50:05,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:50:05,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:50:05,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:50:05,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:50:05,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:50:05" (1/3) ... [2023-12-16 04:50:05,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d5ac86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:50:05, skipping insertion in model container [2023-12-16 04:50:05,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (2/3) ... [2023-12-16 04:50:05,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d5ac86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:50:05, skipping insertion in model container [2023-12-16 04:50:05,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:50:05" (3/3) ... [2023-12-16 04:50:05,937 INFO L112 eAbstractionObserver]: Analyzing ICFG as2013-hybrid.i [2023-12-16 04:50:05,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:50:05,949 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:50:05,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:50:05,982 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;@528e640c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:50:05,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:50:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:50:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-16 04:50:05,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:05,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:50:05,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:05,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:05,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1125893624, now seen corresponding path program 1 times [2023-12-16 04:50:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:06,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062919203] [2023-12-16 04:50:06,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:06,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,211 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 04:50:06,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:06,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062919203] [2023-12-16 04:50:06,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062919203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:06,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:06,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:50:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535160149] [2023-12-16 04:50:06,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:06,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:50:06,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:06,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:50:06,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:50:06,249 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:06,347 INFO L93 Difference]: Finished difference Result 35 states and 52 transitions. [2023-12-16 04:50:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:50:06,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-16 04:50:06,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:06,353 INFO L225 Difference]: With dead ends: 35 [2023-12-16 04:50:06,353 INFO L226 Difference]: Without dead ends: 20 [2023-12-16 04:50:06,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:50:06,358 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:06,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 45 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-16 04:50:06,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2023-12-16 04:50:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:50:06,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-12-16 04:50:06,381 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2023-12-16 04:50:06,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:06,381 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-12-16 04:50:06,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:06,381 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-12-16 04:50:06,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-16 04:50:06,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:06,382 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:50:06,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:50:06,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:06,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:06,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1538564498, now seen corresponding path program 1 times [2023-12-16 04:50:06,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:06,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858256600] [2023-12-16 04:50:06,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:06,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 04:50:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:06,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:06,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858256600] [2023-12-16 04:50:06,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858256600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:06,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:06,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:50:06,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992082714] [2023-12-16 04:50:06,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:06,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:50:06,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:06,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:50:06,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:50:06,491 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 04:50:06,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:06,557 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2023-12-16 04:50:06,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:50:06,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-16 04:50:06,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:06,562 INFO L225 Difference]: With dead ends: 48 [2023-12-16 04:50:06,562 INFO L226 Difference]: Without dead ends: 31 [2023-12-16 04:50:06,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:50:06,564 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:06,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 54 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:06,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-16 04:50:06,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-12-16 04:50:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 04:50:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-12-16 04:50:06,574 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2023-12-16 04:50:06,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:06,574 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-12-16 04:50:06,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 04:50:06,574 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-12-16 04:50:06,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 04:50:06,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:06,576 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:50:06,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:50:06,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:06,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:06,576 INFO L85 PathProgramCache]: Analyzing trace with hash -560863639, now seen corresponding path program 1 times [2023-12-16 04:50:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:06,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900738482] [2023-12-16 04:50:06,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:06,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 04:50:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:06,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:06,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900738482] [2023-12-16 04:50:06,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900738482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:06,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:06,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:50:06,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019997429] [2023-12-16 04:50:06,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:06,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:50:06,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:06,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:50:06,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:50:06,647 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 04:50:06,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:06,665 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2023-12-16 04:50:06,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:50:06,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-16 04:50:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:06,668 INFO L225 Difference]: With dead ends: 65 [2023-12-16 04:50:06,668 INFO L226 Difference]: Without dead ends: 37 [2023-12-16 04:50:06,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:50:06,670 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 25 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 04:50:06,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 25 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-16 04:50:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2023-12-16 04:50:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 04:50:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2023-12-16 04:50:06,677 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 16 [2023-12-16 04:50:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:06,677 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-12-16 04:50:06,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 04:50:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2023-12-16 04:50:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 04:50:06,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:06,678 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:50:06,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 04:50:06,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:06,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:06,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1268038168, now seen corresponding path program 1 times [2023-12-16 04:50:06,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:06,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38317939] [2023-12-16 04:50:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:06,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 04:50:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:50:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 04:50:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 04:50:06,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:06,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38317939] [2023-12-16 04:50:06,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38317939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:06,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698384377] [2023-12-16 04:50:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:06,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:06,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:06,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:06,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:50:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:50:06,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 04:50:06,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 04:50:06,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698384377] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:06,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:06,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-16 04:50:06,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156180099] [2023-12-16 04:50:06,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:06,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:50:06,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:06,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:50:06,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:50:06,907 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 04:50:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:06,955 INFO L93 Difference]: Finished difference Result 85 states and 111 transitions. [2023-12-16 04:50:06,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:50:06,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2023-12-16 04:50:06,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:06,960 INFO L225 Difference]: With dead ends: 85 [2023-12-16 04:50:06,960 INFO L226 Difference]: Without dead ends: 55 [2023-12-16 04:50:06,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:50:06,961 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:06,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:06,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-16 04:50:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-16 04:50:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 states have internal predecessors, (39), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:50:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2023-12-16 04:50:06,971 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 28 [2023-12-16 04:50:06,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:06,971 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2023-12-16 04:50:06,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 04:50:06,975 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2023-12-16 04:50:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 04:50:06,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:06,979 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 04:50:06,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 04:50:07,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:07,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:07,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1079460507, now seen corresponding path program 2 times [2023-12-16 04:50:07,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:07,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701009690] [2023-12-16 04:50:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:07,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-16 04:50:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:50:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 04:50:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:50:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-16 04:50:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:50:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-16 04:50:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:50:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-16 04:50:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-16 04:50:07,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:07,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701009690] [2023-12-16 04:50:07,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701009690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:07,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:07,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:50:07,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278920575] [2023-12-16 04:50:07,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:07,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:50:07,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:50:07,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:50:07,332 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 04:50:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:07,374 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2023-12-16 04:50:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:50:07,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 64 [2023-12-16 04:50:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:07,376 INFO L225 Difference]: With dead ends: 55 [2023-12-16 04:50:07,376 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 04:50:07,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:50:07,379 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:07,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:07,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 04:50:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 04:50:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 04:50:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 04:50:07,383 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2023-12-16 04:50:07,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:07,383 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 04:50:07,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 04:50:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 04:50:07,384 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 04:50:07,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:50:07,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 04:50:07,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 04:50:07,520 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 04:50:07,521 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-12-16 04:50:07,521 INFO L895 garLoopResultBuilder]: At program point L19-2(lines 19 23) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~0#1| 10) (<= 1 |ULTIMATE.start_main_~i~0#1|)) [2023-12-16 04:50:07,521 INFO L899 garLoopResultBuilder]: For program point L19-3(lines 16 26) no Hoare annotation was computed. [2023-12-16 04:50:07,521 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 04:50:07,521 INFO L899 garLoopResultBuilder]: For program point L24-1(lines 24 25) no Hoare annotation was computed. [2023-12-16 04:50:07,521 INFO L895 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~0#1| 10) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 9)) [2023-12-16 04:50:07,522 INFO L895 garLoopResultBuilder]: At program point L20-1(line 20) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~0#1| 10) (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 9)) [2023-12-16 04:50:07,522 INFO L895 garLoopResultBuilder]: At program point L16-2(lines 16 26) the Hoare annotation is: (or (= |ULTIMATE.start_main_~i~0#1| 0) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 9))) [2023-12-16 04:50:07,522 INFO L899 garLoopResultBuilder]: For program point L16-3(lines 16 26) no Hoare annotation was computed. [2023-12-16 04:50:07,522 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-12-16 04:50:07,522 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-12-16 04:50:07,522 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2023-12-16 04:50:07,522 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2023-12-16 04:50:07,522 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true [2023-12-16 04:50:07,522 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-12-16 04:50:07,525 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-12-16 04:50:07,526 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:50:07,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:50:07 BoogieIcfgContainer [2023-12-16 04:50:07,540 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:50:07,540 INFO L158 Benchmark]: Toolchain (without parser) took 1975.99ms. Allocated memory was 227.5MB in the beginning and 289.4MB in the end (delta: 61.9MB). Free memory was 179.6MB in the beginning and 165.4MB in the end (delta: 14.2MB). Peak memory consumption was 75.8MB. Max. memory is 8.0GB. [2023-12-16 04:50:07,541 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 227.5MB. Free memory is still 176.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:50:07,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 142.79ms. Allocated memory is still 227.5MB. Free memory was 179.6MB in the beginning and 168.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 04:50:07,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.79ms. Allocated memory is still 227.5MB. Free memory was 168.8MB in the beginning and 167.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 04:50:07,541 INFO L158 Benchmark]: Boogie Preprocessor took 18.02ms. Allocated memory is still 227.5MB. Free memory was 167.4MB in the beginning and 166.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:50:07,541 INFO L158 Benchmark]: RCFGBuilder took 184.61ms. Allocated memory is still 227.5MB. Free memory was 165.6MB in the beginning and 155.9MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 04:50:07,541 INFO L158 Benchmark]: TraceAbstraction took 1606.94ms. Allocated memory was 227.5MB in the beginning and 289.4MB in the end (delta: 61.9MB). Free memory was 155.1MB in the beginning and 165.4MB in the end (delta: -10.3MB). Peak memory consumption was 51.7MB. Max. memory is 8.0GB. [2023-12-16 04:50:07,543 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 227.5MB. Free memory is still 176.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 142.79ms. Allocated memory is still 227.5MB. Free memory was 179.6MB in the beginning and 168.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.79ms. Allocated memory is still 227.5MB. Free memory was 168.8MB in the beginning and 167.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.02ms. Allocated memory is still 227.5MB. Free memory was 167.4MB in the beginning and 166.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 184.61ms. Allocated memory is still 227.5MB. Free memory was 165.6MB in the beginning and 155.9MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1606.94ms. Allocated memory was 227.5MB in the beginning and 289.4MB in the end (delta: 61.9MB). Free memory was 155.1MB in the beginning and 165.4MB in the end (delta: -10.3MB). Peak memory consumption was 51.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 196 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 131 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 65 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=4, InterpolantAutomatonStates: 30, 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, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 32 PreInvPairs, 60 NumberOfFragments, 39 HoareAnnotationTreeSize, 32 FormulaSimplifications, 286 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FormulaSimplificationsInter, 169 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 250 SizeOfPredicates, 0 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 279/282 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((i <= 10) && (1 <= i)) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((i == 0) || ((1 <= i) && (i <= 9))) RESULT: Ultimate proved your program to be correct! [2023-12-16 04:50:07,581 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...