/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_Dekker.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:29:21,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:29:21,220 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 19:29:21,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:29:21,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:29:21,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:29:21,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:29:21,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:29:21,247 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:29:21,247 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:29:21,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:29:21,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:29:21,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:29:21,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:29:21,249 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:29:21,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:29:21,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:29:21,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:29:21,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:29:21,250 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:29:21,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:29:21,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:29:21,254 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:29:21,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:29:21,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:29:21,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:29:21,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:29:21,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:29:21,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:29:21,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:29:21,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:29:21,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:29:21,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:29:21,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:29:21,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:29:21,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:29:21,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:29:21,261 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:29:21,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:29:21,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:29:21,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:29:21,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:29:21,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:29:21,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:29:21,430 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:29:21,430 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:29:21,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2023-12-16 19:29:22,463 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:29:22,723 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:29:22,723 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2023-12-16 19:29:22,735 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/926d1e16e/2909f408695b4a7d8cbbcb9db2ad34e9/FLAG2d739945e [2023-12-16 19:29:22,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/926d1e16e/2909f408695b4a7d8cbbcb9db2ad34e9 [2023-12-16 19:29:22,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:29:22,747 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:29:22,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:29:22,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:29:22,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:29:22,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:29:22" (1/1) ... [2023-12-16 19:29:22,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f13d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:22, skipping insertion in model container [2023-12-16 19:29:22,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:29:22" (1/1) ... [2023-12-16 19:29:22,819 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:29:22,986 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_Dekker.c[1248,1261] [2023-12-16 19:29:23,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:29:23,206 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:29:23,214 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_Dekker.c[1248,1261] [2023-12-16 19:29:23,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:29:23,315 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:29:23,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23 WrapperNode [2023-12-16 19:29:23,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:29:23,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:29:23,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:29:23,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:29:23,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,501 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2219 [2023-12-16 19:29:23,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:29:23,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:29:23,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:29:23,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:29:23,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,580 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 19:29:23,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:29:23,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:29:23,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:29:23,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:29:23,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (1/1) ... [2023-12-16 19:29:23,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:29:23,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:29:23,827 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 19:29:23,903 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 19:29:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:29:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:29:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:29:23,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:29:24,117 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:29:24,119 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:29:25,180 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:29:25,231 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:29:25,231 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:29:25,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:29:25 BoogieIcfgContainer [2023-12-16 19:29:25,232 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:29:25,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:29:25,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:29:25,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:29:25,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:29:22" (1/3) ... [2023-12-16 19:29:25,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce0e225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:29:25, skipping insertion in model container [2023-12-16 19:29:25,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:29:23" (2/3) ... [2023-12-16 19:29:25,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce0e225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:29:25, skipping insertion in model container [2023-12-16 19:29:25,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:29:25" (3/3) ... [2023-12-16 19:29:25,260 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Dekker.c [2023-12-16 19:29:25,272 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:29:25,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:29:25,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:29:25,327 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;@26e9e9c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:29:25,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:29:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 345 states have (on average 1.6666666666666667) internal successors, (575), 346 states have internal predecessors, (575), 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 19:29:25,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 19:29:25,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:25,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:25,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:25,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:25,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1448474296, now seen corresponding path program 1 times [2023-12-16 19:29:25,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:25,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827101370] [2023-12-16 19:29:25,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:25,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:25,663 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 19:29:25,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:25,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827101370] [2023-12-16 19:29:25,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827101370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:25,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:25,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:25,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874805513] [2023-12-16 19:29:25,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:25,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:29:25,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:25,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:29:25,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:29:25,693 INFO L87 Difference]: Start difference. First operand has 347 states, 345 states have (on average 1.6666666666666667) internal successors, (575), 346 states have internal predecessors, (575), 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 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 19:29:25,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:25,758 INFO L93 Difference]: Finished difference Result 678 states and 1126 transitions. [2023-12-16 19:29:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:29:25,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2023-12-16 19:29:25,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:25,770 INFO L225 Difference]: With dead ends: 678 [2023-12-16 19:29:25,770 INFO L226 Difference]: Without dead ends: 347 [2023-12-16 19:29:25,772 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 19:29:25,775 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1699 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 19:29:25,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1699 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:25,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-16 19:29:25,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-12-16 19:29:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.6560693641618498) internal successors, (573), 346 states have internal predecessors, (573), 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 19:29:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 573 transitions. [2023-12-16 19:29:25,819 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 573 transitions. Word has length 26 [2023-12-16 19:29:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:25,819 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 573 transitions. [2023-12-16 19:29:25,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 19:29:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 573 transitions. [2023-12-16 19:29:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 19:29:25,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:25,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:25,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:29:25,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:25,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:25,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1951305136, now seen corresponding path program 1 times [2023-12-16 19:29:25,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:25,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345022253] [2023-12-16 19:29:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:25,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:25,906 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 19:29:25,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:25,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345022253] [2023-12-16 19:29:25,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345022253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:25,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:25,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:25,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559690236] [2023-12-16 19:29:25,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:25,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:29:25,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:25,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:29:25,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:29:25,908 INFO L87 Difference]: Start difference. First operand 347 states and 573 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 19:29:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:25,939 INFO L93 Difference]: Finished difference Result 681 states and 1124 transitions. [2023-12-16 19:29:25,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:29:25,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-12-16 19:29:25,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:25,942 INFO L225 Difference]: With dead ends: 681 [2023-12-16 19:29:25,942 INFO L226 Difference]: Without dead ends: 350 [2023-12-16 19:29:25,943 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 19:29:25,944 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1697 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 19:29:25,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1697 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:25,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-16 19:29:25,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 349. [2023-12-16 19:29:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.6522988505747127) internal successors, (575), 348 states have internal predecessors, (575), 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 19:29:25,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 575 transitions. [2023-12-16 19:29:25,955 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 575 transitions. Word has length 27 [2023-12-16 19:29:25,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:25,955 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 575 transitions. [2023-12-16 19:29:25,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 19:29:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 575 transitions. [2023-12-16 19:29:25,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 19:29:25,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:25,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:25,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:29:25,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:25,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1203657956, now seen corresponding path program 1 times [2023-12-16 19:29:25,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:25,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235789437] [2023-12-16 19:29:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:25,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:26,143 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 19:29:26,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:26,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235789437] [2023-12-16 19:29:26,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235789437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:26,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:26,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:26,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444097945] [2023-12-16 19:29:26,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:26,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:29:26,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:26,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:29:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:29:26,151 INFO L87 Difference]: Start difference. First operand 349 states and 575 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 19:29:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:26,204 INFO L93 Difference]: Finished difference Result 1009 states and 1664 transitions. [2023-12-16 19:29:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:29:26,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2023-12-16 19:29:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:26,207 INFO L225 Difference]: With dead ends: 1009 [2023-12-16 19:29:26,208 INFO L226 Difference]: Without dead ends: 676 [2023-12-16 19:29:26,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:29:26,213 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 536 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:26,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 1735 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-16 19:29:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 351. [2023-12-16 19:29:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.6485714285714286) internal successors, (577), 350 states have internal predecessors, (577), 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 19:29:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 577 transitions. [2023-12-16 19:29:26,238 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 577 transitions. Word has length 28 [2023-12-16 19:29:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:26,238 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 577 transitions. [2023-12-16 19:29:26,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 19:29:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 577 transitions. [2023-12-16 19:29:26,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 19:29:26,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:26,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:26,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:29:26,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:26,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:26,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1452015432, now seen corresponding path program 1 times [2023-12-16 19:29:26,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:26,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121787193] [2023-12-16 19:29:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:26,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:26,541 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 19:29:26,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:26,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121787193] [2023-12-16 19:29:26,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121787193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:26,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:26,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:29:26,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431220698] [2023-12-16 19:29:26,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:26,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:26,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:26,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:26,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:29:26,543 INFO L87 Difference]: Start difference. First operand 351 states and 577 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 19:29:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:26,642 INFO L93 Difference]: Finished difference Result 1018 states and 1675 transitions. [2023-12-16 19:29:26,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:29:26,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2023-12-16 19:29:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:26,645 INFO L225 Difference]: With dead ends: 1018 [2023-12-16 19:29:26,645 INFO L226 Difference]: Without dead ends: 683 [2023-12-16 19:29:26,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:29:26,653 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 2150 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:26,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2150 Valid, 2280 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-12-16 19:29:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 356. [2023-12-16 19:29:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.6450704225352113) internal successors, (584), 355 states have internal predecessors, (584), 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 19:29:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 584 transitions. [2023-12-16 19:29:26,661 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 584 transitions. Word has length 29 [2023-12-16 19:29:26,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:26,661 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 584 transitions. [2023-12-16 19:29:26,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 19:29:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 584 transitions. [2023-12-16 19:29:26,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-16 19:29:26,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:26,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:26,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:29:26,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:26,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:26,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1023108584, now seen corresponding path program 1 times [2023-12-16 19:29:26,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:26,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273724982] [2023-12-16 19:29:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:26,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:26,883 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 19:29:26,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:26,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273724982] [2023-12-16 19:29:26,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273724982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:26,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:26,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:29:26,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891083202] [2023-12-16 19:29:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:26,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:26,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:26,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:26,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:29:26,884 INFO L87 Difference]: Start difference. First operand 356 states and 584 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 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 19:29:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:26,965 INFO L93 Difference]: Finished difference Result 1029 states and 1688 transitions. [2023-12-16 19:29:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:29:26,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 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 30 [2023-12-16 19:29:26,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:26,968 INFO L225 Difference]: With dead ends: 1029 [2023-12-16 19:29:26,968 INFO L226 Difference]: Without dead ends: 689 [2023-12-16 19:29:26,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:29:26,969 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 1605 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:26,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 2286 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:29:26,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-12-16 19:29:26,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 356. [2023-12-16 19:29:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.6450704225352113) internal successors, (584), 355 states have internal predecessors, (584), 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 19:29:26,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 584 transitions. [2023-12-16 19:29:26,976 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 584 transitions. Word has length 30 [2023-12-16 19:29:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:26,976 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 584 transitions. [2023-12-16 19:29:26,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 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 19:29:26,976 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 584 transitions. [2023-12-16 19:29:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 19:29:26,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:26,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:26,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 19:29:26,982 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:26,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:26,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1850398050, now seen corresponding path program 1 times [2023-12-16 19:29:26,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:26,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85874594] [2023-12-16 19:29:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:26,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:27,226 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 19:29:27,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:27,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85874594] [2023-12-16 19:29:27,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85874594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:27,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:27,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:29:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940529584] [2023-12-16 19:29:27,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:27,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:27,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:27,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:27,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:29:27,227 INFO L87 Difference]: Start difference. First operand 356 states and 584 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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 19:29:27,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:27,390 INFO L93 Difference]: Finished difference Result 1035 states and 1698 transitions. [2023-12-16 19:29:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:29:27,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2023-12-16 19:29:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:27,393 INFO L225 Difference]: With dead ends: 1035 [2023-12-16 19:29:27,394 INFO L226 Difference]: Without dead ends: 695 [2023-12-16 19:29:27,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-16 19:29:27,395 INFO L413 NwaCegarLoop]: 1061 mSDtfsCounter, 1620 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:27,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 3208 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:29:27,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-12-16 19:29:27,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 356. [2023-12-16 19:29:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.6450704225352113) internal successors, (584), 355 states have internal predecessors, (584), 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 19:29:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 584 transitions. [2023-12-16 19:29:27,402 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 584 transitions. Word has length 31 [2023-12-16 19:29:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:27,403 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 584 transitions. [2023-12-16 19:29:27,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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 19:29:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 584 transitions. [2023-12-16 19:29:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 19:29:27,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:27,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:27,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 19:29:27,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:27,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1423500892, now seen corresponding path program 1 times [2023-12-16 19:29:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:27,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77056033] [2023-12-16 19:29:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:27,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:27,524 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 19:29:27,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77056033] [2023-12-16 19:29:27,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77056033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:27,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:27,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:29:27,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128523344] [2023-12-16 19:29:27,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:27,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:29:27,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:27,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:29:27,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:29:27,526 INFO L87 Difference]: Start difference. First operand 356 states and 584 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 19:29:27,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:27,670 INFO L93 Difference]: Finished difference Result 1019 states and 1674 transitions. [2023-12-16 19:29:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:29:27,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-12-16 19:29:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:27,673 INFO L225 Difference]: With dead ends: 1019 [2023-12-16 19:29:27,673 INFO L226 Difference]: Without dead ends: 679 [2023-12-16 19:29:27,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:27,674 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 1621 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:27,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 1643 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:29:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-12-16 19:29:27,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 361. [2023-12-16 19:29:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.6416666666666666) internal successors, (591), 360 states have internal predecessors, (591), 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 19:29:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 591 transitions. [2023-12-16 19:29:27,681 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 591 transitions. Word has length 31 [2023-12-16 19:29:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:27,681 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 591 transitions. [2023-12-16 19:29:27,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 19:29:27,681 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 591 transitions. [2023-12-16 19:29:27,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-16 19:29:27,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:27,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:27,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 19:29:27,685 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:27,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:27,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2002667204, now seen corresponding path program 1 times [2023-12-16 19:29:27,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:27,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855828111] [2023-12-16 19:29:27,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:27,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:30,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:30,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855828111] [2023-12-16 19:29:30,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855828111] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:29:30,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187904669] [2023-12-16 19:29:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:30,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:29:30,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:29:30,348 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 19:29:30,389 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 19:29:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:30,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 2229 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 19:29:30,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:29:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:31,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:29:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:32,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187904669] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:29:32,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:29:32,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 12] total 25 [2023-12-16 19:29:32,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306087355] [2023-12-16 19:29:32,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:29:32,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 19:29:32,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:32,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 19:29:32,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-12-16 19:29:32,343 INFO L87 Difference]: Start difference. First operand 361 states and 591 transitions. Second operand has 25 states, 25 states have (on average 29.2) internal successors, (730), 25 states have internal predecessors, (730), 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 19:29:35,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:35,634 INFO L93 Difference]: Finished difference Result 4492 states and 7346 transitions. [2023-12-16 19:29:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-16 19:29:35,635 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 29.2) internal successors, (730), 25 states have internal predecessors, (730), 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 250 [2023-12-16 19:29:35,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:35,644 INFO L225 Difference]: With dead ends: 4492 [2023-12-16 19:29:35,644 INFO L226 Difference]: Without dead ends: 3083 [2023-12-16 19:29:35,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 482 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3256 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1916, Invalid=9004, Unknown=0, NotChecked=0, Total=10920 [2023-12-16 19:29:35,650 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 15893 mSDsluCounter, 15359 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15893 SdHoareTripleChecker+Valid, 16389 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:35,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15893 Valid, 16389 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1847 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 19:29:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2023-12-16 19:29:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 451. [2023-12-16 19:29:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.6244444444444444) internal successors, (731), 450 states have internal predecessors, (731), 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 19:29:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 731 transitions. [2023-12-16 19:29:35,670 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 731 transitions. Word has length 250 [2023-12-16 19:29:35,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:35,670 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 731 transitions. [2023-12-16 19:29:35,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 29.2) internal successors, (730), 25 states have internal predecessors, (730), 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 19:29:35,671 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 731 transitions. [2023-12-16 19:29:35,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-16 19:29:35,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:35,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:35,698 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 19:29:35,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:29:35,884 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:35,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1400642610, now seen corresponding path program 1 times [2023-12-16 19:29:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:35,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921370579] [2023-12-16 19:29:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:35,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:39,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:39,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921370579] [2023-12-16 19:29:39,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921370579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:39,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:39,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:29:39,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768948054] [2023-12-16 19:29:39,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:39,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:29:39,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:29:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:29:39,027 INFO L87 Difference]: Start difference. First operand 451 states and 731 transitions. Second operand has 6 states, 6 states have (on average 42.0) internal successors, (252), 5 states have internal predecessors, (252), 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 19:29:39,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:39,352 INFO L93 Difference]: Finished difference Result 1235 states and 2012 transitions. [2023-12-16 19:29:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:29:39,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.0) internal successors, (252), 5 states have internal predecessors, (252), 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 252 [2023-12-16 19:29:39,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:39,354 INFO L225 Difference]: With dead ends: 1235 [2023-12-16 19:29:39,355 INFO L226 Difference]: Without dead ends: 800 [2023-12-16 19:29:39,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:39,356 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1597 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:39,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 1929 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:29:39,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2023-12-16 19:29:39,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 452. [2023-12-16 19:29:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.623059866962306) internal successors, (732), 451 states have internal predecessors, (732), 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 19:29:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 732 transitions. [2023-12-16 19:29:39,365 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 732 transitions. Word has length 252 [2023-12-16 19:29:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:39,365 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 732 transitions. [2023-12-16 19:29:39,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.0) internal successors, (252), 5 states have internal predecessors, (252), 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 19:29:39,366 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 732 transitions. [2023-12-16 19:29:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-16 19:29:39,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:39,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:39,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 19:29:39,368 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:39,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:39,369 INFO L85 PathProgramCache]: Analyzing trace with hash -457765452, now seen corresponding path program 1 times [2023-12-16 19:29:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:39,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809002836] [2023-12-16 19:29:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:39,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 19:29:42,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809002836] [2023-12-16 19:29:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809002836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:29:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058940123] [2023-12-16 19:29:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:42,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:29:42,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:29:42,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 19:29:42,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 19:29:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:43,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 2236 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-16 19:29:43,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:29:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:44,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 19:29:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:46,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058940123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 19:29:46,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 19:29:46,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 29 [2023-12-16 19:29:46,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895346398] [2023-12-16 19:29:46,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 19:29:46,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-16 19:29:46,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:46,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-16 19:29:46,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2023-12-16 19:29:46,185 INFO L87 Difference]: Start difference. First operand 452 states and 732 transitions. Second operand has 30 states, 30 states have (on average 24.666666666666668) internal successors, (740), 29 states have internal predecessors, (740), 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 19:29:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:52,628 INFO L93 Difference]: Finished difference Result 3457 states and 5564 transitions. [2023-12-16 19:29:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-16 19:29:52,633 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 24.666666666666668) internal successors, (740), 29 states have internal predecessors, (740), 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 252 [2023-12-16 19:29:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:52,641 INFO L225 Difference]: With dead ends: 3457 [2023-12-16 19:29:52,641 INFO L226 Difference]: Without dead ends: 3021 [2023-12-16 19:29:52,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3062 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1695, Invalid=9647, Unknown=0, NotChecked=0, Total=11342 [2023-12-16 19:29:52,646 INFO L413 NwaCegarLoop]: 1287 mSDtfsCounter, 10156 mSDsluCounter, 18882 mSDsCounter, 0 mSdLazyCounter, 5449 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10156 SdHoareTripleChecker+Valid, 20169 SdHoareTripleChecker+Invalid, 5471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:52,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10156 Valid, 20169 Invalid, 5471 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 5449 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-16 19:29:52,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2023-12-16 19:29:52,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 570. [2023-12-16 19:29:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.6028119507908611) internal successors, (912), 569 states have internal predecessors, (912), 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 19:29:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 912 transitions. [2023-12-16 19:29:52,671 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 912 transitions. Word has length 252 [2023-12-16 19:29:52,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:52,672 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 912 transitions. [2023-12-16 19:29:52,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 24.666666666666668) internal successors, (740), 29 states have internal predecessors, (740), 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 19:29:52,673 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 912 transitions. [2023-12-16 19:29:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-16 19:29:52,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:52,674 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:52,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 19:29:52,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 19:29:52,892 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:52,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:52,893 INFO L85 PathProgramCache]: Analyzing trace with hash 490831204, now seen corresponding path program 1 times [2023-12-16 19:29:52,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:52,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291797740] [2023-12-16 19:29:52,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:52,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:29:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:29:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:29:57,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:29:57,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291797740] [2023-12-16 19:29:57,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291797740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:29:57,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:29:57,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:29:57,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087395127] [2023-12-16 19:29:57,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:29:57,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:29:57,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:29:57,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:29:57,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:29:57,123 INFO L87 Difference]: Start difference. First operand 570 states and 912 transitions. Second operand has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 6 states have internal predecessors, (253), 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 19:29:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:29:57,221 INFO L93 Difference]: Finished difference Result 1686 states and 2694 transitions. [2023-12-16 19:29:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:29:57,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 6 states have internal predecessors, (253), 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 253 [2023-12-16 19:29:57,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:29:57,225 INFO L225 Difference]: With dead ends: 1686 [2023-12-16 19:29:57,226 INFO L226 Difference]: Without dead ends: 1132 [2023-12-16 19:29:57,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:29:57,227 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 904 mSDsluCounter, 3669 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 4709 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:29:57,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 4709 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:29:57,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2023-12-16 19:29:57,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 580. [2023-12-16 19:29:57,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 1.5958549222797926) internal successors, (924), 579 states have internal predecessors, (924), 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 19:29:57,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 924 transitions. [2023-12-16 19:29:57,243 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 924 transitions. Word has length 253 [2023-12-16 19:29:57,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:29:57,243 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 924 transitions. [2023-12-16 19:29:57,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 6 states have internal predecessors, (253), 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 19:29:57,244 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 924 transitions. [2023-12-16 19:29:57,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-16 19:29:57,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:29:57,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:29:57,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 19:29:57,247 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:29:57,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:29:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1647770046, now seen corresponding path program 1 times [2023-12-16 19:29:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:29:57,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993688497] [2023-12-16 19:29:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:29:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:01,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:01,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993688497] [2023-12-16 19:30:01,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993688497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:01,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:30:01,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:30:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529707741] [2023-12-16 19:30:01,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:01,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:30:01,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:30:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:30:01,861 INFO L87 Difference]: Start difference. First operand 580 states and 924 transitions. Second operand has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 6 states have internal predecessors, (253), 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 19:30:02,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:02,025 INFO L93 Difference]: Finished difference Result 2175 states and 3470 transitions. [2023-12-16 19:30:02,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:30:02,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 6 states have internal predecessors, (253), 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 253 [2023-12-16 19:30:02,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:02,030 INFO L225 Difference]: With dead ends: 2175 [2023-12-16 19:30:02,030 INFO L226 Difference]: Without dead ends: 1611 [2023-12-16 19:30:02,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-16 19:30:02,031 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 3131 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3131 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:02,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3131 Valid, 3742 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:30:02,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2023-12-16 19:30:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 953. [2023-12-16 19:30:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 952 states have (on average 1.5924369747899159) internal successors, (1516), 952 states have internal predecessors, (1516), 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 19:30:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1516 transitions. [2023-12-16 19:30:02,069 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1516 transitions. Word has length 253 [2023-12-16 19:30:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:02,070 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1516 transitions. [2023-12-16 19:30:02,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.142857142857146) internal successors, (253), 6 states have internal predecessors, (253), 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 19:30:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1516 transitions. [2023-12-16 19:30:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-16 19:30:02,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:02,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:02,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 19:30:02,072 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:02,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:02,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1591182096, now seen corresponding path program 1 times [2023-12-16 19:30:02,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:02,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558778544] [2023-12-16 19:30:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:02,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:04,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:04,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558778544] [2023-12-16 19:30:04,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558778544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:04,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:30:04,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:30:04,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087241579] [2023-12-16 19:30:04,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:04,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:30:04,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:04,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:30:04,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:30:04,299 INFO L87 Difference]: Start difference. First operand 953 states and 1516 transitions. Second operand has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 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 19:30:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:04,337 INFO L93 Difference]: Finished difference Result 1537 states and 2442 transitions. [2023-12-16 19:30:04,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:30:04,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 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 254 [2023-12-16 19:30:04,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:04,340 INFO L225 Difference]: With dead ends: 1537 [2023-12-16 19:30:04,340 INFO L226 Difference]: Without dead ends: 969 [2023-12-16 19:30:04,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:30:04,341 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 356 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:04,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1680 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:30:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-12-16 19:30:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 965. [2023-12-16 19:30:04,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 1.5892116182572613) internal successors, (1532), 964 states have internal predecessors, (1532), 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 19:30:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1532 transitions. [2023-12-16 19:30:04,356 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1532 transitions. Word has length 254 [2023-12-16 19:30:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:04,356 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1532 transitions. [2023-12-16 19:30:04,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.8) internal successors, (254), 4 states have internal predecessors, (254), 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 19:30:04,357 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1532 transitions. [2023-12-16 19:30:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-16 19:30:04,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:04,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:04,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 19:30:04,359 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:04,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:04,359 INFO L85 PathProgramCache]: Analyzing trace with hash -652801202, now seen corresponding path program 1 times [2023-12-16 19:30:04,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:04,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872081312] [2023-12-16 19:30:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:04,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:09,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:09,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872081312] [2023-12-16 19:30:09,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872081312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:09,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:30:09,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:30:09,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353332165] [2023-12-16 19:30:09,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:09,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 19:30:09,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:09,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 19:30:09,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:30:09,061 INFO L87 Difference]: Start difference. First operand 965 states and 1532 transitions. Second operand has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 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 19:30:09,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:09,260 INFO L93 Difference]: Finished difference Result 2592 states and 4124 transitions. [2023-12-16 19:30:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 19:30:09,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 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 254 [2023-12-16 19:30:09,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:09,266 INFO L225 Difference]: With dead ends: 2592 [2023-12-16 19:30:09,266 INFO L226 Difference]: Without dead ends: 1982 [2023-12-16 19:30:09,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-16 19:30:09,267 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 3842 mSDsluCounter, 3626 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3842 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:09,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3842 Valid, 4613 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:30:09,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-12-16 19:30:09,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1182. [2023-12-16 19:30:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 1.6011854360711262) internal successors, (1891), 1181 states have internal predecessors, (1891), 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 19:30:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1891 transitions. [2023-12-16 19:30:09,287 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1891 transitions. Word has length 254 [2023-12-16 19:30:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:09,287 INFO L495 AbstractCegarLoop]: Abstraction has 1182 states and 1891 transitions. [2023-12-16 19:30:09,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 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 19:30:09,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1891 transitions. [2023-12-16 19:30:09,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-16 19:30:09,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:09,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:09,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 19:30:09,290 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:09,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:09,290 INFO L85 PathProgramCache]: Analyzing trace with hash -835277196, now seen corresponding path program 1 times [2023-12-16 19:30:09,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:09,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101667386] [2023-12-16 19:30:09,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:09,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:12,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:12,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101667386] [2023-12-16 19:30:12,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101667386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:12,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:30:12,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:30:12,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776510086] [2023-12-16 19:30:12,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:12,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:30:12,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:12,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:30:12,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:30:12,931 INFO L87 Difference]: Start difference. First operand 1182 states and 1891 transitions. Second operand has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 6 states have internal predecessors, (254), 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 19:30:13,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:13,023 INFO L93 Difference]: Finished difference Result 2523 states and 4001 transitions. [2023-12-16 19:30:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 19:30:13,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 6 states have internal predecessors, (254), 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 254 [2023-12-16 19:30:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:13,028 INFO L225 Difference]: With dead ends: 2523 [2023-12-16 19:30:13,028 INFO L226 Difference]: Without dead ends: 1861 [2023-12-16 19:30:13,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:30:13,031 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 924 mSDsluCounter, 3576 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 4585 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:13,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 4585 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:30:13,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2023-12-16 19:30:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1197. [2023-12-16 19:30:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1196 states have (on average 1.5961538461538463) internal successors, (1909), 1196 states have internal predecessors, (1909), 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 19:30:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1909 transitions. [2023-12-16 19:30:13,054 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1909 transitions. Word has length 254 [2023-12-16 19:30:13,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:13,055 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1909 transitions. [2023-12-16 19:30:13,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 6 states have internal predecessors, (254), 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 19:30:13,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1909 transitions. [2023-12-16 19:30:13,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-16 19:30:13,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:13,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:13,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 19:30:13,057 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:13,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash -775399738, now seen corresponding path program 1 times [2023-12-16 19:30:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:13,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292421122] [2023-12-16 19:30:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:13,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:30:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:30:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:30:16,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:30:16,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292421122] [2023-12-16 19:30:16,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292421122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:30:16,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:30:16,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 19:30:16,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002545256] [2023-12-16 19:30:16,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:30:16,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:30:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:30:16,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:30:16,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:30:16,514 INFO L87 Difference]: Start difference. First operand 1197 states and 1909 transitions. Second operand has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 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 19:30:16,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:30:16,934 INFO L93 Difference]: Finished difference Result 2547 states and 4032 transitions. [2023-12-16 19:30:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 19:30:16,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 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 255 [2023-12-16 19:30:16,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:30:16,941 INFO L225 Difference]: With dead ends: 2547 [2023-12-16 19:30:16,941 INFO L226 Difference]: Without dead ends: 1880 [2023-12-16 19:30:16,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:30:16,942 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 925 mSDsluCounter, 3268 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 4201 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 19:30:16,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 4201 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 19:30:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-12-16 19:30:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1215. [2023-12-16 19:30:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1214 states have (on average 1.5922570016474464) internal successors, (1933), 1214 states have internal predecessors, (1933), 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 19:30:16,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1933 transitions. [2023-12-16 19:30:16,965 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1933 transitions. Word has length 255 [2023-12-16 19:30:16,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:30:16,966 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1933 transitions. [2023-12-16 19:30:16,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.42857142857143) internal successors, (255), 6 states have internal predecessors, (255), 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 19:30:16,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1933 transitions. [2023-12-16 19:30:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-16 19:30:16,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:30:16,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:16,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 19:30:16,968 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:30:16,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:30:16,969 INFO L85 PathProgramCache]: Analyzing trace with hash -734724988, now seen corresponding path program 1 times [2023-12-16 19:30:16,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:30:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961496310] [2023-12-16 19:30:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:30:16,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms Received shutdown request... [2023-12-16 19:30:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-12-16 19:30:17,926 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 19:30:17,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 19:30:17,926 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 256 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [1961496310] and IpTcStrategyModuleZ3 [1657142267]. [2023-12-16 19:30:17,932 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:30:17,935 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 19:30:17,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:30:17 BoogieIcfgContainer [2023-12-16 19:30:17,941 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 19:30:17,941 INFO L158 Benchmark]: Toolchain (without parser) took 55193.85ms. Allocated memory was 176.2MB in the beginning and 1.1GB in the end (delta: 896.5MB). Free memory was 114.7MB in the beginning and 659.0MB in the end (delta: -544.3MB). Peak memory consumption was 352.8MB. Max. memory is 8.0GB. [2023-12-16 19:30:17,942 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 176.2MB. Free memory was 128.0MB in the beginning and 128.0MB in the end (delta: 66.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 19:30:17,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.09ms. Allocated memory was 176.2MB in the beginning and 231.7MB in the end (delta: 55.6MB). Free memory was 114.4MB in the beginning and 176.5MB in the end (delta: -62.1MB). Peak memory consumption was 32.1MB. Max. memory is 8.0GB. [2023-12-16 19:30:17,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 185.06ms. Allocated memory is still 231.7MB. Free memory was 176.5MB in the beginning and 132.4MB in the end (delta: 44.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2023-12-16 19:30:17,945 INFO L158 Benchmark]: Boogie Preprocessor took 261.27ms. Allocated memory is still 231.7MB. Free memory was 132.4MB in the beginning and 160.9MB in the end (delta: -28.4MB). Peak memory consumption was 45.0MB. Max. memory is 8.0GB. [2023-12-16 19:30:17,945 INFO L158 Benchmark]: RCFGBuilder took 1468.39ms. Allocated memory was 231.7MB in the beginning and 418.4MB in the end (delta: 186.6MB). Free memory was 160.9MB in the beginning and 249.0MB in the end (delta: -88.1MB). Peak memory consumption was 105.3MB. Max. memory is 8.0GB. [2023-12-16 19:30:17,945 INFO L158 Benchmark]: TraceAbstraction took 52706.81ms. Allocated memory was 418.4MB in the beginning and 1.1GB in the end (delta: 654.3MB). Free memory was 248.5MB in the beginning and 659.0MB in the end (delta: -410.5MB). Peak memory consumption was 243.8MB. Max. memory is 8.0GB. [2023-12-16 19:30:17,950 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 176.2MB. Free memory was 128.0MB in the beginning and 128.0MB in the end (delta: 66.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 568.09ms. Allocated memory was 176.2MB in the beginning and 231.7MB in the end (delta: 55.6MB). Free memory was 114.4MB in the beginning and 176.5MB in the end (delta: -62.1MB). Peak memory consumption was 32.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 185.06ms. Allocated memory is still 231.7MB. Free memory was 176.5MB in the beginning and 132.4MB in the end (delta: 44.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 261.27ms. Allocated memory is still 231.7MB. Free memory was 132.4MB in the beginning and 160.9MB in the end (delta: -28.4MB). Peak memory consumption was 45.0MB. Max. memory is 8.0GB. * RCFGBuilder took 1468.39ms. Allocated memory was 231.7MB in the beginning and 418.4MB in the end (delta: 186.6MB). Free memory was 160.9MB in the beginning and 249.0MB in the end (delta: -88.1MB). Peak memory consumption was 105.3MB. Max. memory is 8.0GB. * TraceAbstraction took 52706.81ms. Allocated memory was 418.4MB in the beginning and 1.1GB in the end (delta: 654.3MB). Free memory was 248.5MB in the beginning and 659.0MB in the end (delta: -410.5MB). Peak memory consumption was 243.8MB. 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 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) [2023-12-16 19:30:17,957 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 256 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [1961496310] and IpTcStrategyModuleZ3 [1657142267]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 347 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.6s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45262 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45262 mSDsluCounter, 76565 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63707 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9358 IncrementalHoareTripleChecker+Invalid, 9433 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 12858 mSDtfsCounter, 9358 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1289 GetRequests, 989 SyntacticMatches, 1 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6378 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1215occurred in iteration=16, InterpolantAutomatonStates: 263, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 10417 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 25.3s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 2981 NumberOfCodeBlocks, 2981 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3463 ConstructedInterpolants, 0 QuantifiedInterpolants, 21488 SizeOfPredicates, 32 NumberOfNonLiveVariables, 4465 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 150/182 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: Timeout Completed graceful shutdown