/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:18:25,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:18:25,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:18:25,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:18:25,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:18:25,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:18:25,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:18:25,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:18:25,356 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:18:25,356 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:18:25,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:18:25,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:18:25,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:18:25,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:18:25,365 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:18:25,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:18:25,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:18:25,366 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:18:25,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:18:25,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:18:25,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:18:25,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:18:25,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:18:25,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:18:25,377 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:18:25,377 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:18:25,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:18:25,377 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:18:25,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:18:25,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:18:25,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:18:25,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:18:25,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:18:25,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:18:25,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:18:25,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:18:25,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:18:25,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:18:25,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:18:25,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:18:25,380 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:18:25,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:18:25,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:18:25,383 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:18:25,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:18:25,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:18:25,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:18:25,637 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:18:25,638 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:18:25,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21.c [2023-12-16 02:18:26,806 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:18:27,183 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:18:27,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label21.c [2023-12-16 02:18:27,216 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d52311ca3/011181b60f9943cb8608ccfe9e63e36c/FLAG222ebe7d7 [2023-12-16 02:18:27,234 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d52311ca3/011181b60f9943cb8608ccfe9e63e36c [2023-12-16 02:18:27,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:18:27,237 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:18:27,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:18:27,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:18:27,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:18:27,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:18:27" (1/1) ... [2023-12-16 02:18:27,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3445858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:27, skipping insertion in model container [2023-12-16 02:18:27,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:18:27" (1/1) ... [2023-12-16 02:18:27,349 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:18:27,561 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label21.c[6051,6064] [2023-12-16 02:18:28,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:18:28,178 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:18:28,202 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label21.c[6051,6064] [2023-12-16 02:18:28,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:18:28,496 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:18:28,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28 WrapperNode [2023-12-16 02:18:28,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:18:28,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:18:28,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:18:28,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:18:28,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:28,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:28,776 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4135 [2023-12-16 02:18:28,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:18:28,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:18:28,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:18:28,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:18:28,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:28,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:28,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:28,964 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 02:18:28,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:28,964 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:29,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:29,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:29,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:29,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:29,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:18:29,135 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:18:29,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:18:29,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:18:29,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (1/1) ... [2023-12-16 02:18:29,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:18:29,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:18:29,166 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 02:18:29,196 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 02:18:29,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:18:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:18:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:18:29,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:18:29,273 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:18:29,275 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:18:32,199 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:18:32,255 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:18:32,255 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:18:32,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:18:32 BoogieIcfgContainer [2023-12-16 02:18:32,255 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:18:32,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:18:32,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:18:32,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:18:32,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:18:27" (1/3) ... [2023-12-16 02:18:32,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49182de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:18:32, skipping insertion in model container [2023-12-16 02:18:32,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:18:28" (2/3) ... [2023-12-16 02:18:32,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49182de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:18:32, skipping insertion in model container [2023-12-16 02:18:32,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:18:32" (3/3) ... [2023-12-16 02:18:32,263 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label21.c [2023-12-16 02:18:32,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:18:32,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:18:32,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:18:32,336 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;@299131b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:18:32,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:18:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 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 02:18:32,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 02:18:32,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:18:32,351 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, 1, 1, 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 02:18:32,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:18:32,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:18:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1791052396, now seen corresponding path program 1 times [2023-12-16 02:18:32,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:18:32,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112450922] [2023-12-16 02:18:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:18:32,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:18:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:18:32,531 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 02:18:32,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:18:32,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112450922] [2023-12-16 02:18:32,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112450922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:18:32,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:18:32,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:18:32,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660265834] [2023-12-16 02:18:32,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:18:32,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:18:32,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:18:32,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:18:32,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:18:32,574 INFO L87 Difference]: Start difference. First operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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 02:18:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:18:32,685 INFO L93 Difference]: Finished difference Result 1389 states and 2763 transitions. [2023-12-16 02:18:32,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:18:32,694 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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 57 [2023-12-16 02:18:32,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:18:32,708 INFO L225 Difference]: With dead ends: 1389 [2023-12-16 02:18:32,708 INFO L226 Difference]: Without dead ends: 693 [2023-12-16 02:18:32,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:18:32,716 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:18:32,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1317 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:18:32,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-16 02:18:32,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2023-12-16 02:18:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.903179190751445) internal successors, (1317), 692 states have internal predecessors, (1317), 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 02:18:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2023-12-16 02:18:32,784 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 57 [2023-12-16 02:18:32,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:18:32,785 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2023-12-16 02:18:32,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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 02:18:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2023-12-16 02:18:32,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 02:18:32,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:18:32,786 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, 1, 1, 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 02:18:32,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 02:18:32,787 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:18:32,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:18:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash 223782389, now seen corresponding path program 1 times [2023-12-16 02:18:32,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:18:32,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987028354] [2023-12-16 02:18:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:18:32,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:18:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:18:33,055 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 02:18:33,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:18:33,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987028354] [2023-12-16 02:18:33,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987028354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:18:33,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:18:33,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:18:33,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626687524] [2023-12-16 02:18:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:18:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:18:33,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:18:33,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:18:33,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:18:33,067 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 02:18:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:18:37,618 INFO L93 Difference]: Finished difference Result 2771 states and 5269 transitions. [2023-12-16 02:18:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:18:37,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2023-12-16 02:18:37,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:18:37,637 INFO L225 Difference]: With dead ends: 2771 [2023-12-16 02:18:37,638 INFO L226 Difference]: Without dead ends: 2079 [2023-12-16 02:18:37,639 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 02:18:37,639 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 2059 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 1655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 4924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1655 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:18:37,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 135 Invalid, 4924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1655 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-16 02:18:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2023-12-16 02:18:37,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2073. [2023-12-16 02:18:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2072 states have (on average 1.5564671814671815) internal successors, (3225), 2072 states have internal predecessors, (3225), 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 02:18:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3225 transitions. [2023-12-16 02:18:37,719 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3225 transitions. Word has length 57 [2023-12-16 02:18:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:18:37,719 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 3225 transitions. [2023-12-16 02:18:37,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 02:18:37,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3225 transitions. [2023-12-16 02:18:37,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-16 02:18:37,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:18:37,728 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-12-16 02:18:37,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 02:18:37,729 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:18:37,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:18:37,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1788791350, now seen corresponding path program 1 times [2023-12-16 02:18:37,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:18:37,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929393643] [2023-12-16 02:18:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:18:37,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:18:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:18:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-16 02:18:38,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:18:38,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929393643] [2023-12-16 02:18:38,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929393643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:18:38,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:18:38,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:18:38,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739549531] [2023-12-16 02:18:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:18:38,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:18:38,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:18:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:18:38,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:18:38,321 INFO L87 Difference]: Start difference. First operand 2073 states and 3225 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 02:18:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:18:42,031 INFO L93 Difference]: Finished difference Result 6215 states and 9563 transitions. [2023-12-16 02:18:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:18:42,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 217 [2023-12-16 02:18:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:18:42,046 INFO L225 Difference]: With dead ends: 6215 [2023-12-16 02:18:42,047 INFO L226 Difference]: Without dead ends: 4143 [2023-12-16 02:18:42,053 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 02:18:42,056 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 1922 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4115 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 4635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 4115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:18:42,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 645 Invalid, 4635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 4115 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-16 02:18:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2023-12-16 02:18:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2023-12-16 02:18:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4142 states have (on average 1.2928536938676967) internal successors, (5355), 4142 states have internal predecessors, (5355), 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 02:18:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5355 transitions. [2023-12-16 02:18:42,143 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5355 transitions. Word has length 217 [2023-12-16 02:18:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:18:42,149 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 5355 transitions. [2023-12-16 02:18:42,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 02:18:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5355 transitions. [2023-12-16 02:18:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-16 02:18:42,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:18:42,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-12-16 02:18:42,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 02:18:42,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:18:42,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:18:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1053881987, now seen corresponding path program 1 times [2023-12-16 02:18:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:18:42,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842639303] [2023-12-16 02:18:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:18:42,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:18:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:18:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 02:18:42,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:18:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842639303] [2023-12-16 02:18:42,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842639303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:18:42,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:18:42,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:18:42,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817174152] [2023-12-16 02:18:42,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:18:42,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:18:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:18:42,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:18:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:18:42,625 INFO L87 Difference]: Start difference. First operand 4143 states and 5355 transitions. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 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 02:18:45,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:18:45,278 INFO L93 Difference]: Finished difference Result 9028 states and 11974 transitions. [2023-12-16 02:18:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:18:45,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 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 306 [2023-12-16 02:18:45,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:18:45,303 INFO L225 Difference]: With dead ends: 9028 [2023-12-16 02:18:45,303 INFO L226 Difference]: Without dead ends: 5523 [2023-12-16 02:18:45,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:18:45,309 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 529 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 3458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 867 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:18:45,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 633 Invalid, 3458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [867 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 02:18:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2023-12-16 02:18:45,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 5523. [2023-12-16 02:18:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 1.161173487866715) internal successors, (6412), 5522 states have internal predecessors, (6412), 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 02:18:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 6412 transitions. [2023-12-16 02:18:45,402 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 6412 transitions. Word has length 306 [2023-12-16 02:18:45,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:18:45,403 INFO L495 AbstractCegarLoop]: Abstraction has 5523 states and 6412 transitions. [2023-12-16 02:18:45,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 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 02:18:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 6412 transitions. [2023-12-16 02:18:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2023-12-16 02:18:45,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:18:45,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:18:45,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 02:18:45,425 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:18:45,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:18:45,425 INFO L85 PathProgramCache]: Analyzing trace with hash -168459854, now seen corresponding path program 1 times [2023-12-16 02:18:45,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:18:45,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559094361] [2023-12-16 02:18:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:18:45,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:18:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:18:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2023-12-16 02:18:46,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:18:46,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559094361] [2023-12-16 02:18:46,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559094361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:18:46,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:18:46,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:18:46,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647656929] [2023-12-16 02:18:46,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:18:46,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:18:46,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:18:46,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:18:46,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:18:46,518 INFO L87 Difference]: Start difference. First operand 5523 states and 6412 transitions. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 2 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 02:18:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:18:48,470 INFO L93 Difference]: Finished difference Result 11735 states and 13893 transitions. [2023-12-16 02:18:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:18:48,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 2 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) Word has length 938 [2023-12-16 02:18:48,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:18:48,493 INFO L225 Difference]: With dead ends: 11735 [2023-12-16 02:18:48,493 INFO L226 Difference]: Without dead ends: 6903 [2023-12-16 02:18:48,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:18:48,502 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 192 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:18:48,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 342 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 02:18:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6903 states. [2023-12-16 02:18:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6903 to 6903. [2023-12-16 02:18:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6903 states, 6902 states have (on average 1.1469139379889888) internal successors, (7916), 6902 states have internal predecessors, (7916), 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 02:18:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6903 states to 6903 states and 7916 transitions. [2023-12-16 02:18:48,646 INFO L78 Accepts]: Start accepts. Automaton has 6903 states and 7916 transitions. Word has length 938 [2023-12-16 02:18:48,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:18:48,648 INFO L495 AbstractCegarLoop]: Abstraction has 6903 states and 7916 transitions. [2023-12-16 02:18:48,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 2 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 02:18:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6903 states and 7916 transitions. [2023-12-16 02:18:48,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2023-12-16 02:18:48,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:18:48,677 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:18:48,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 02:18:48,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:18:48,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:18:48,678 INFO L85 PathProgramCache]: Analyzing trace with hash -37081431, now seen corresponding path program 1 times [2023-12-16 02:18:48,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:18:48,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660725590] [2023-12-16 02:18:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:18:48,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:18:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:18:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-16 02:18:49,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:18:49,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660725590] [2023-12-16 02:18:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660725590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:18:49,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:18:49,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:18:49,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985264067] [2023-12-16 02:18:49,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:18:49,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:18:49,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:18:49,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:18:49,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:18:49,497 INFO L87 Difference]: Start difference. First operand 6903 states and 7916 transitions. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 2 states have internal predecessors, (587), 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 02:18:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:18:51,434 INFO L93 Difference]: Finished difference Result 15185 states and 18152 transitions. [2023-12-16 02:18:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:18:51,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 2 states have internal predecessors, (587), 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 1004 [2023-12-16 02:18:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:18:51,462 INFO L225 Difference]: With dead ends: 15185 [2023-12-16 02:18:51,462 INFO L226 Difference]: Without dead ends: 8973 [2023-12-16 02:18:51,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:18:51,472 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 226 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:18:51,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 387 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 02:18:51,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8973 states. [2023-12-16 02:18:51,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8973 to 8973. [2023-12-16 02:18:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8973 states, 8972 states have (on average 1.133860900579581) internal successors, (10173), 8972 states have internal predecessors, (10173), 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 02:18:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8973 states to 8973 states and 10173 transitions. [2023-12-16 02:18:51,607 INFO L78 Accepts]: Start accepts. Automaton has 8973 states and 10173 transitions. Word has length 1004 [2023-12-16 02:18:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:18:51,610 INFO L495 AbstractCegarLoop]: Abstraction has 8973 states and 10173 transitions. [2023-12-16 02:18:51,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 2 states have internal predecessors, (587), 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 02:18:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 8973 states and 10173 transitions. [2023-12-16 02:18:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2023-12-16 02:18:51,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:18:51,622 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:18:51,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 02:18:51,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:18:51,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:18:51,623 INFO L85 PathProgramCache]: Analyzing trace with hash -447416101, now seen corresponding path program 1 times [2023-12-16 02:18:51,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:18:51,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364999216] [2023-12-16 02:18:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:18:51,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:18:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:18:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2023-12-16 02:18:53,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:18:53,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364999216] [2023-12-16 02:18:53,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364999216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:18:53,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:18:53,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:18:53,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250706033] [2023-12-16 02:18:53,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:18:53,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:18:53,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:18:53,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:18:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:18:53,438 INFO L87 Difference]: Start difference. First operand 8973 states and 10173 transitions. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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 02:18:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:18:55,162 INFO L93 Difference]: Finished difference Result 17255 states and 19654 transitions. [2023-12-16 02:18:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:18:55,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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 1024 [2023-12-16 02:18:55,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:18:55,177 INFO L225 Difference]: With dead ends: 17255 [2023-12-16 02:18:55,177 INFO L226 Difference]: Without dead ends: 8973 [2023-12-16 02:18:55,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:18:55,184 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 739 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:18:55,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 777 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 02:18:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8973 states. [2023-12-16 02:18:55,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8973 to 8973. [2023-12-16 02:18:55,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8973 states, 8972 states have (on average 1.1116807846633971) internal successors, (9974), 8972 states have internal predecessors, (9974), 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 02:18:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8973 states to 8973 states and 9974 transitions. [2023-12-16 02:18:55,292 INFO L78 Accepts]: Start accepts. Automaton has 8973 states and 9974 transitions. Word has length 1024 [2023-12-16 02:18:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:18:55,293 INFO L495 AbstractCegarLoop]: Abstraction has 8973 states and 9974 transitions. [2023-12-16 02:18:55,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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 02:18:55,293 INFO L276 IsEmpty]: Start isEmpty. Operand 8973 states and 9974 transitions. [2023-12-16 02:18:55,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2023-12-16 02:18:55,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:18:55,305 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:18:55,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 02:18:55,305 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:18:55,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:18:55,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1479857601, now seen corresponding path program 1 times [2023-12-16 02:18:55,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:18:55,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745714916] [2023-12-16 02:18:55,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:18:55,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:18:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:18:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2023-12-16 02:18:56,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:18:56,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745714916] [2023-12-16 02:18:56,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745714916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:18:56,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:18:56,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:18:56,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182964421] [2023-12-16 02:18:56,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:18:56,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:18:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:18:56,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:18:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:18:56,548 INFO L87 Difference]: Start difference. First operand 8973 states and 9974 transitions. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 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 02:18:58,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:18:58,461 INFO L93 Difference]: Finished difference Result 23465 states and 26449 transitions. [2023-12-16 02:18:58,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:18:58,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 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 1079 [2023-12-16 02:18:58,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:18:58,487 INFO L225 Difference]: With dead ends: 23465 [2023-12-16 02:18:58,487 INFO L226 Difference]: Without dead ends: 15183 [2023-12-16 02:18:58,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:18:58,496 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 575 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:18:58,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1013 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 02:18:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15183 states. [2023-12-16 02:18:58,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15183 to 15183. [2023-12-16 02:18:58,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15183 states, 15182 states have (on average 1.0931366091424055) internal successors, (16596), 15182 states have internal predecessors, (16596), 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 02:18:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15183 states to 15183 states and 16596 transitions. [2023-12-16 02:18:58,688 INFO L78 Accepts]: Start accepts. Automaton has 15183 states and 16596 transitions. Word has length 1079 [2023-12-16 02:18:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:18:58,688 INFO L495 AbstractCegarLoop]: Abstraction has 15183 states and 16596 transitions. [2023-12-16 02:18:58,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 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 02:18:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 15183 states and 16596 transitions. [2023-12-16 02:18:58,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2023-12-16 02:18:58,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:18:58,704 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:18:58,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 02:18:58,704 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:18:58,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:18:58,705 INFO L85 PathProgramCache]: Analyzing trace with hash 530894600, now seen corresponding path program 1 times [2023-12-16 02:18:58,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:18:58,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978512862] [2023-12-16 02:18:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:18:58,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:18:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:19:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 522 proven. 537 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-12-16 02:19:00,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:19:00,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978512862] [2023-12-16 02:19:00,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978512862] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:19:00,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594248344] [2023-12-16 02:19:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:19:00,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:19:00,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:19:00,372 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 02:19:00,376 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 02:19:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:19:00,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:19:00,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:19:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 611 proven. 0 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2023-12-16 02:19:00,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:19:00,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594248344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:19:00,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:19:00,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-16 02:19:00,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223459102] [2023-12-16 02:19:00,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:19:00,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:19:00,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:19:00,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:19:00,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:19:00,920 INFO L87 Difference]: Start difference. First operand 15183 states and 16596 transitions. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 02:19:02,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:19:02,871 INFO L93 Difference]: Finished difference Result 32435 states and 35787 transitions. [2023-12-16 02:19:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:19:02,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 1114 [2023-12-16 02:19:02,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:19:02,900 INFO L225 Difference]: With dead ends: 32435 [2023-12-16 02:19:02,900 INFO L226 Difference]: Without dead ends: 15873 [2023-12-16 02:19:02,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1119 GetRequests, 1114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:19:02,919 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 649 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1704 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 1704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:19:02,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 970 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 1704 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 02:19:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15873 states. [2023-12-16 02:19:03,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15873 to 14493. [2023-12-16 02:19:03,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14493 states, 14492 states have (on average 1.0512696660226333) internal successors, (15235), 14492 states have internal predecessors, (15235), 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 02:19:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14493 states to 14493 states and 15235 transitions. [2023-12-16 02:19:03,092 INFO L78 Accepts]: Start accepts. Automaton has 14493 states and 15235 transitions. Word has length 1114 [2023-12-16 02:19:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:19:03,093 INFO L495 AbstractCegarLoop]: Abstraction has 14493 states and 15235 transitions. [2023-12-16 02:19:03,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 02:19:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 14493 states and 15235 transitions. [2023-12-16 02:19:03,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2023-12-16 02:19:03,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:19:03,114 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:19:03,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:19:03,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:19:03,325 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:19:03,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:19:03,325 INFO L85 PathProgramCache]: Analyzing trace with hash 819550856, now seen corresponding path program 1 times [2023-12-16 02:19:03,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:19:03,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048072424] [2023-12-16 02:19:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:19:03,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:19:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:19:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 1125 proven. 330 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-16 02:19:05,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:19:05,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048072424] [2023-12-16 02:19:05,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048072424] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:19:05,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288256693] [2023-12-16 02:19:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:19:05,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:19:05,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:19:05,464 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 02:19:05,482 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 02:19:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:19:05,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:19:05,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:19:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 1019 trivial. 0 not checked. [2023-12-16 02:19:05,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:19:05,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288256693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:19:05,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:19:05,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-16 02:19:05,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395120575] [2023-12-16 02:19:05,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:19:05,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:19:05,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:19:05,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:19:05,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:19:05,913 INFO L87 Difference]: Start difference. First operand 14493 states and 15235 transitions. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 02:19:07,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:19:07,589 INFO L93 Difference]: Finished difference Result 29675 states and 31474 transitions. [2023-12-16 02:19:07,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:19:07,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 1267 [2023-12-16 02:19:07,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:19:07,619 INFO L225 Difference]: With dead ends: 29675 [2023-12-16 02:19:07,619 INFO L226 Difference]: Without dead ends: 15873 [2023-12-16 02:19:07,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1273 GetRequests, 1266 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:19:07,635 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 604 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:19:07,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 949 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:19:07,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15873 states. [2023-12-16 02:19:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15873 to 15873. [2023-12-16 02:19:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15873 states, 15872 states have (on average 1.0501512096774193) internal successors, (16668), 15872 states have internal predecessors, (16668), 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 02:19:07,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15873 states to 15873 states and 16668 transitions. [2023-12-16 02:19:07,827 INFO L78 Accepts]: Start accepts. Automaton has 15873 states and 16668 transitions. Word has length 1267 [2023-12-16 02:19:07,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:19:07,828 INFO L495 AbstractCegarLoop]: Abstraction has 15873 states and 16668 transitions. [2023-12-16 02:19:07,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 02:19:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand 15873 states and 16668 transitions. [2023-12-16 02:19:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1281 [2023-12-16 02:19:07,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:19:07,850 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:19:07,860 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 02:19:08,056 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 02:19:08,057 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:19:08,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:19:08,058 INFO L85 PathProgramCache]: Analyzing trace with hash 110295415, now seen corresponding path program 1 times [2023-12-16 02:19:08,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:19:08,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801922540] [2023-12-16 02:19:08,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:19:08,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:19:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:19:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1930 backedges. 1179 proven. 628 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-16 02:19:09,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:19:09,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801922540] [2023-12-16 02:19:09,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801922540] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:19:09,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27753289] [2023-12-16 02:19:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:19:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:19:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:19:09,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:19:09,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:19:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:19:09,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:19:09,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:19:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1930 backedges. 1205 proven. 0 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2023-12-16 02:19:10,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:19:10,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27753289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:19:10,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:19:10,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-16 02:19:10,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202511992] [2023-12-16 02:19:10,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:19:10,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:19:10,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:19:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:19:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:19:10,109 INFO L87 Difference]: Start difference. First operand 15873 states and 16668 transitions. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 02:19:11,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:19:11,711 INFO L93 Difference]: Finished difference Result 31055 states and 32644 transitions. [2023-12-16 02:19:11,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:19:11,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 1280 [2023-12-16 02:19:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:19:11,730 INFO L225 Difference]: With dead ends: 31055 [2023-12-16 02:19:11,730 INFO L226 Difference]: Without dead ends: 15873 [2023-12-16 02:19:11,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1286 GetRequests, 1280 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:19:11,740 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 630 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:19:11,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 70 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:19:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15873 states. [2023-12-16 02:19:11,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15873 to 15873. [2023-12-16 02:19:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15873 states, 15872 states have (on average 1.0393145161290323) internal successors, (16496), 15872 states have internal predecessors, (16496), 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 02:19:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15873 states to 15873 states and 16496 transitions. [2023-12-16 02:19:11,907 INFO L78 Accepts]: Start accepts. Automaton has 15873 states and 16496 transitions. Word has length 1280 [2023-12-16 02:19:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:19:11,908 INFO L495 AbstractCegarLoop]: Abstraction has 15873 states and 16496 transitions. [2023-12-16 02:19:11,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 02:19:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 15873 states and 16496 transitions. [2023-12-16 02:19:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1296 [2023-12-16 02:19:11,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:19:11,932 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:19:11,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:19:12,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:19:12,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:19:12,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:19:12,140 INFO L85 PathProgramCache]: Analyzing trace with hash -62518893, now seen corresponding path program 1 times [2023-12-16 02:19:12,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:19:12,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125907720] [2023-12-16 02:19:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:19:12,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:19:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:19:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2023-12-16 02:19:12,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:19:12,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125907720] [2023-12-16 02:19:12,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125907720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:19:12,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:19:12,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:19:12,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160252792] [2023-12-16 02:19:12,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:19:12,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:19:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:19:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:19:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:19:12,830 INFO L87 Difference]: Start difference. First operand 15873 states and 16496 transitions. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 02:19:14,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:19:14,578 INFO L93 Difference]: Finished difference Result 36575 states and 38221 transitions. [2023-12-16 02:19:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:19:14,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 1295 [2023-12-16 02:19:14,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:19:14,602 INFO L225 Difference]: With dead ends: 36575 [2023-12-16 02:19:14,602 INFO L226 Difference]: Without dead ends: 20703 [2023-12-16 02:19:14,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:19:14,612 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 604 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:19:14,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 262 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1810 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:19:14,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20703 states. [2023-12-16 02:19:14,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20703 to 20703. [2023-12-16 02:19:14,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20703 states, 20702 states have (on average 1.0380156506617717) internal successors, (21489), 20702 states have internal predecessors, (21489), 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 02:19:14,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20703 states to 20703 states and 21489 transitions. [2023-12-16 02:19:14,865 INFO L78 Accepts]: Start accepts. Automaton has 20703 states and 21489 transitions. Word has length 1295 [2023-12-16 02:19:14,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:19:14,867 INFO L495 AbstractCegarLoop]: Abstraction has 20703 states and 21489 transitions. [2023-12-16 02:19:14,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 02:19:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 20703 states and 21489 transitions. [2023-12-16 02:19:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1310 [2023-12-16 02:19:14,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:19:14,894 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:19:14,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 02:19:14,895 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:19:14,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:19:14,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1416882591, now seen corresponding path program 1 times [2023-12-16 02:19:14,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:19:14,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173675267] [2023-12-16 02:19:14,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:19:14,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:19:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:19:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 1237 proven. 330 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-16 02:19:16,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:19:16,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173675267] [2023-12-16 02:19:16,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173675267] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:19:16,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813350162] [2023-12-16 02:19:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:19:16,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:19:16,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:19:16,515 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:19:16,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:19:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:19:16,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:19:16,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:19:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 1206 proven. 0 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2023-12-16 02:19:16,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:19:16,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813350162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:19:16,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:19:16,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-16 02:19:17,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620259062] [2023-12-16 02:19:17,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:19:17,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:19:17,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:19:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:19:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:19:17,004 INFO L87 Difference]: Start difference. First operand 20703 states and 21489 transitions. Second operand has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 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) Received shutdown request... [2023-12-16 02:19:17,965 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 [2023-12-16 02:19:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:19:17,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1315 GetRequests, 1308 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:19:17,966 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 592 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:19:17,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 46 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 02:19:17,968 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:19:17,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 02:19:17,978 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:19:18,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:19:18,174 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (20703states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (12689 states constructed, input type IntersectNwa). [2023-12-16 02:19:18,178 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:19:18,179 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:19:18,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:19:18 BoogieIcfgContainer [2023-12-16 02:19:18,181 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:19:18,181 INFO L158 Benchmark]: Toolchain (without parser) took 50944.13ms. Allocated memory was 192.9MB in the beginning and 1.1GB in the end (delta: 910.2MB). Free memory was 140.7MB in the beginning and 440.1MB in the end (delta: -299.4MB). Peak memory consumption was 612.0MB. Max. memory is 8.0GB. [2023-12-16 02:19:18,181 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 149.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:19:18,182 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1258.35ms. Allocated memory is still 192.9MB. Free memory was 140.4MB in the beginning and 86.2MB in the end (delta: 54.2MB). Peak memory consumption was 55.2MB. Max. memory is 8.0GB. [2023-12-16 02:19:18,182 INFO L158 Benchmark]: Boogie Procedure Inliner took 279.01ms. Allocated memory was 192.9MB in the beginning and 293.6MB in the end (delta: 100.7MB). Free memory was 86.2MB in the beginning and 227.3MB in the end (delta: -141.1MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-12-16 02:19:18,182 INFO L158 Benchmark]: Boogie Preprocessor took 356.04ms. Allocated memory is still 293.6MB. Free memory was 227.3MB in the beginning and 211.6MB in the end (delta: 15.7MB). Peak memory consumption was 41.4MB. Max. memory is 8.0GB. [2023-12-16 02:19:18,182 INFO L158 Benchmark]: RCFGBuilder took 3120.58ms. Allocated memory was 293.6MB in the beginning and 420.5MB in the end (delta: 126.9MB). Free memory was 211.6MB in the beginning and 199.6MB in the end (delta: 12.0MB). Peak memory consumption was 140.0MB. Max. memory is 8.0GB. [2023-12-16 02:19:18,182 INFO L158 Benchmark]: TraceAbstraction took 45923.42ms. Allocated memory was 420.5MB in the beginning and 1.1GB in the end (delta: 682.6MB). Free memory was 199.1MB in the beginning and 440.1MB in the end (delta: -241.0MB). Peak memory consumption was 441.6MB. Max. memory is 8.0GB. [2023-12-16 02:19:18,184 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 149.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1258.35ms. Allocated memory is still 192.9MB. Free memory was 140.4MB in the beginning and 86.2MB in the end (delta: 54.2MB). Peak memory consumption was 55.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 279.01ms. Allocated memory was 192.9MB in the beginning and 293.6MB in the end (delta: 100.7MB). Free memory was 86.2MB in the beginning and 227.3MB in the end (delta: -141.1MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 356.04ms. Allocated memory is still 293.6MB. Free memory was 227.3MB in the beginning and 211.6MB in the end (delta: 15.7MB). Peak memory consumption was 41.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3120.58ms. Allocated memory was 293.6MB in the beginning and 420.5MB in the end (delta: 126.9MB). Free memory was 211.6MB in the beginning and 199.6MB in the end (delta: 12.0MB). Peak memory consumption was 140.0MB. Max. memory is 8.0GB. * TraceAbstraction took 45923.42ms. Allocated memory was 420.5MB in the beginning and 1.1GB in the end (delta: 682.6MB). Free memory was 199.1MB in the beginning and 440.1MB in the end (delta: -241.0MB). Peak memory consumption was 441.6MB. 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: 193]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 193). Cancelled while NwaCegarLoop was constructing difference of abstraction (20703states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (12689 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 695 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.9s, OverallIterations: 13, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 27.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9321 SdHoareTripleChecker+Valid, 25.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9321 mSDsluCounter, 7546 SdHoareTripleChecker+Invalid, 20.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 5822 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25474 IncrementalHoareTripleChecker+Invalid, 31296 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5822 mSolverCounterUnsat, 7453 mSDtfsCounter, 25474 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5023 GetRequests, 4985 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20703occurred in iteration=12, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 1386 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 15917 NumberOfCodeBlocks, 15917 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 15900 ConstructedInterpolants, 0 QuantifiedInterpolants, 53897 SizeOfPredicates, 0 NumberOfNonLiveVariables, 5748 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 16917/18742 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