/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/Problem13_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:07:45,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:07:45,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:07:45,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:07:45,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:07:45,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:07:45,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:07:45,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:07:45,473 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:07:45,473 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:07:45,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:07:45,474 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:07:45,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:07:45,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:07:45,474 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:07:45,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:07:45,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:07:45,475 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:07:45,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:07:45,476 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:07:45,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:07:45,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:07:45,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:07:45,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:07:45,484 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:07:45,484 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:07:45,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:07:45,485 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:07:45,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:07:45,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:07:45,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:07:45,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:07:45,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:07:45,486 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:07:45,486 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:07:45,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:07:45,487 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:07:45,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:07:45,487 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:07:45,487 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:07:45,487 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:07:45,487 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:07:45,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:07:45,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:07:45,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:07:45,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:07:45,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:07:45,700 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:07:45,700 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:07:45,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44.c [2023-12-20 17:07:46,782 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:07:47,157 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:07:47,159 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label44.c [2023-12-20 17:07:47,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/132ec016b/aa7079aa151847c095b37792a6d00322/FLAGef2068789 [2023-12-20 17:07:47,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/132ec016b/aa7079aa151847c095b37792a6d00322 [2023-12-20 17:07:47,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:07:47,196 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:07:47,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:07:47,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:07:47,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:07:47,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:07:47" (1/1) ... [2023-12-20 17:07:47,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c06367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:47, skipping insertion in model container [2023-12-20 17:07:47,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:07:47" (1/1) ... [2023-12-20 17:07:47,299 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:07:47,497 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/Problem13_label44.c[4499,4512] [2023-12-20 17:07:48,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:07:48,201 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:07:48,217 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/Problem13_label44.c[4499,4512] [2023-12-20 17:07:48,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:07:48,571 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:07:48,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48 WrapperNode [2023-12-20 17:07:48,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:07:48,574 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:07:48,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:07:48,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:07:48,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:48,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:49,194 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-20 17:07:49,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:07:49,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:07:49,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:07:49,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:07:49,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:49,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:49,321 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:49,453 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]. [2023-12-20 17:07:49,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:49,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:49,643 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:49,661 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:49,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:49,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:49,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:07:49,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:07:49,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:07:49,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:07:49,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (1/1) ... [2023-12-20 17:07:49,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:07:49,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:07:49,794 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) [2023-12-20 17:07:49,840 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 [2023-12-20 17:07:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:07:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:07:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:07:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:07:49,912 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:07:49,914 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:07:54,187 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:07:54,225 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:07:54,226 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:07:54,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:07:54 BoogieIcfgContainer [2023-12-20 17:07:54,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:07:54,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:07:54,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:07:54,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:07:54,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:07:47" (1/3) ... [2023-12-20 17:07:54,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a019c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:07:54, skipping insertion in model container [2023-12-20 17:07:54,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:07:48" (2/3) ... [2023-12-20 17:07:54,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a019c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:07:54, skipping insertion in model container [2023-12-20 17:07:54,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:07:54" (3/3) ... [2023-12-20 17:07:54,233 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label44.c [2023-12-20 17:07:54,245 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:07:54,245 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:07:54,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:07:54,295 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;@5bb101f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:07:54,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:07:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 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) [2023-12-20 17:07:54,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-20 17:07:54,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:07:54,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:07:54,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:07:54,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:07:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash -228085034, now seen corresponding path program 1 times [2023-12-20 17:07:54,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:07:54,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521081991] [2023-12-20 17:07:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:07:54,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:07:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:07:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:07:54,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:07:54,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521081991] [2023-12-20 17:07:54,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521081991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:07:54,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:07:54,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:07:54,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199321908] [2023-12-20 17:07:54,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:07:54,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:07:54,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:07:54,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:07:54,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:07:54,578 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 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 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:07:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:07:54,723 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-20 17:07:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:07:54,726 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-20 17:07:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:07:54,753 INFO L225 Difference]: With dead ends: 2071 [2023-12-20 17:07:54,754 INFO L226 Difference]: Without dead ends: 1034 [2023-12-20 17:07:54,761 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 [2023-12-20 17:07:54,767 INFO L413 NwaCegarLoop]: 1876 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, 1876 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 [2023-12-20 17:07:54,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:07:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-20 17:07:54,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-20 17:07:54,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 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) [2023-12-20 17:07:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-20 17:07:54,898 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 29 [2023-12-20 17:07:54,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:07:54,899 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-20 17:07:54,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:07:54,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-20 17:07:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-20 17:07:54,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:07:54,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:07:54,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:07:54,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:07:54,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:07:54,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1216758797, now seen corresponding path program 1 times [2023-12-20 17:07:54,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:07:54,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219770759] [2023-12-20 17:07:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:07:54,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:07:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:07:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:07:55,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:07:55,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219770759] [2023-12-20 17:07:55,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219770759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:07:55,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:07:55,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:07:55,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578678351] [2023-12-20 17:07:55,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:07:55,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:07:55,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:07:55,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:07:55,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:07:55,230 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:00,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:00,737 INFO L93 Difference]: Finished difference Result 3696 states and 6823 transitions. [2023-12-20 17:08:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:08:00,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-20 17:08:00,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:00,745 INFO L225 Difference]: With dead ends: 3696 [2023-12-20 17:08:00,746 INFO L226 Difference]: Without dead ends: 2663 [2023-12-20 17:08:00,747 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 [2023-12-20 17:08:00,748 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 2702 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 1487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 5614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1487 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:00,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 1017 Invalid, 5614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1487 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-20 17:08:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-12-20 17:08:00,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2662. [2023-12-20 17:08:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2661 states have (on average 1.4611048478015785) internal successors, (3888), 2661 states have internal predecessors, (3888), 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) [2023-12-20 17:08:00,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3888 transitions. [2023-12-20 17:08:00,788 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3888 transitions. Word has length 29 [2023-12-20 17:08:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:00,788 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 3888 transitions. [2023-12-20 17:08:00,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:08:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3888 transitions. [2023-12-20 17:08:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 17:08:00,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:00,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-12-20 17:08:00,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:08:00,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:00,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:00,799 INFO L85 PathProgramCache]: Analyzing trace with hash 33751564, now seen corresponding path program 1 times [2023-12-20 17:08:00,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:00,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943961913] [2023-12-20 17:08:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:00,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:08:01,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:01,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943961913] [2023-12-20 17:08:01,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943961913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:01,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:01,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:01,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854734024] [2023-12-20 17:08:01,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:01,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:08:01,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:01,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:08:01,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:08:01,168 INFO L87 Difference]: Start difference. First operand 2662 states and 3888 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-12-20 17:08:06,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:06,466 INFO L93 Difference]: Finished difference Result 7865 states and 12669 transitions. [2023-12-20 17:08:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:08:06,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2023-12-20 17:08:06,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:06,490 INFO L225 Difference]: With dead ends: 7865 [2023-12-20 17:08:06,491 INFO L226 Difference]: Without dead ends: 5991 [2023-12-20 17:08:06,497 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 [2023-12-20 17:08:06,501 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 1728 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 5286 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 6128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 5286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:06,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1728 Valid, 1068 Invalid, 6128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 5286 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 17:08:06,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2023-12-20 17:08:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 5858. [2023-12-20 17:08:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 5857 states have (on average 1.4454498890216834) internal successors, (8466), 5857 states have internal predecessors, (8466), 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) [2023-12-20 17:08:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 8466 transitions. [2023-12-20 17:08:06,600 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 8466 transitions. Word has length 154 [2023-12-20 17:08:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:06,605 INFO L495 AbstractCegarLoop]: Abstraction has 5858 states and 8466 transitions. [2023-12-20 17:08:06,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-12-20 17:08:06,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 8466 transitions. [2023-12-20 17:08:06,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-20 17:08:06,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:06,613 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:08:06,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:08:06,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:06,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:06,615 INFO L85 PathProgramCache]: Analyzing trace with hash 557807833, now seen corresponding path program 1 times [2023-12-20 17:08:06,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:06,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632495549] [2023-12-20 17:08:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:06,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 17:08:06,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:06,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632495549] [2023-12-20 17:08:06,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632495549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:06,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:06,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:06,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427136349] [2023-12-20 17:08:06,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:06,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:06,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:06,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:06,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:06,827 INFO L87 Difference]: Start difference. First operand 5858 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2023-12-20 17:08:09,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:09,875 INFO L93 Difference]: Finished difference Result 15686 states and 23392 transitions. [2023-12-20 17:08:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:09,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 196 [2023-12-20 17:08:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:09,903 INFO L225 Difference]: With dead ends: 15686 [2023-12-20 17:08:09,904 INFO L226 Difference]: Without dead ends: 10616 [2023-12-20 17:08:09,909 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 [2023-12-20 17:08:09,909 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:09,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 916 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:08:09,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10616 states. [2023-12-20 17:08:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10616 to 10607. [2023-12-20 17:08:10,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10607 states, 10606 states have (on average 1.355364887799359) internal successors, (14375), 10606 states have internal predecessors, (14375), 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) [2023-12-20 17:08:10,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10607 states to 10607 states and 14375 transitions. [2023-12-20 17:08:10,076 INFO L78 Accepts]: Start accepts. Automaton has 10607 states and 14375 transitions. Word has length 196 [2023-12-20 17:08:10,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:10,076 INFO L495 AbstractCegarLoop]: Abstraction has 10607 states and 14375 transitions. [2023-12-20 17:08:10,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2023-12-20 17:08:10,077 INFO L276 IsEmpty]: Start isEmpty. Operand 10607 states and 14375 transitions. [2023-12-20 17:08:10,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-12-20 17:08:10,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:10,079 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:08:10,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:08:10,079 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:10,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:10,080 INFO L85 PathProgramCache]: Analyzing trace with hash 94447510, now seen corresponding path program 1 times [2023-12-20 17:08:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140206391] [2023-12-20 17:08:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:10,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-20 17:08:10,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:10,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140206391] [2023-12-20 17:08:10,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140206391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:10,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:10,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:10,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633209417] [2023-12-20 17:08:10,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:10,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:10,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:10,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:10,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:10,227 INFO L87 Difference]: Start difference. First operand 10607 states and 14375 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2023-12-20 17:08:13,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:13,573 INFO L93 Difference]: Finished difference Result 28350 states and 39245 transitions. [2023-12-20 17:08:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:13,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 210 [2023-12-20 17:08:13,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:13,615 INFO L225 Difference]: With dead ends: 28350 [2023-12-20 17:08:13,615 INFO L226 Difference]: Without dead ends: 18531 [2023-12-20 17:08:13,630 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 [2023-12-20 17:08:13,631 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 909 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:13,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 611 Invalid, 3417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2873 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 17:08:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18531 states. [2023-12-20 17:08:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18531 to 18522. [2023-12-20 17:08:13,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18522 states, 18521 states have (on average 1.3253604017061713) internal successors, (24547), 18521 states have internal predecessors, (24547), 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) [2023-12-20 17:08:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18522 states to 18522 states and 24547 transitions. [2023-12-20 17:08:13,919 INFO L78 Accepts]: Start accepts. Automaton has 18522 states and 24547 transitions. Word has length 210 [2023-12-20 17:08:13,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:13,920 INFO L495 AbstractCegarLoop]: Abstraction has 18522 states and 24547 transitions. [2023-12-20 17:08:13,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2023-12-20 17:08:13,920 INFO L276 IsEmpty]: Start isEmpty. Operand 18522 states and 24547 transitions. [2023-12-20 17:08:13,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-20 17:08:13,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:13,922 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:08:13,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:08:13,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:13,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:13,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1576693496, now seen corresponding path program 1 times [2023-12-20 17:08:13,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:13,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643038355] [2023-12-20 17:08:13,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:13,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-20 17:08:14,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:14,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643038355] [2023-12-20 17:08:14,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643038355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:14,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:14,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:14,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513626624] [2023-12-20 17:08:14,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:14,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:14,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:14,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:14,088 INFO L87 Difference]: Start difference. First operand 18522 states and 24547 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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) [2023-12-20 17:08:17,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:17,079 INFO L93 Difference]: Finished difference Result 51207 states and 68760 transitions. [2023-12-20 17:08:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:17,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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 222 [2023-12-20 17:08:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:17,153 INFO L225 Difference]: With dead ends: 51207 [2023-12-20 17:08:17,154 INFO L226 Difference]: Without dead ends: 33473 [2023-12-20 17:08:17,173 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 [2023-12-20 17:08:17,174 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:17,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 984 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:08:17,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33473 states. [2023-12-20 17:08:17,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33473 to 32683. [2023-12-20 17:08:17,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32683 states, 32682 states have (on average 1.245425616547335) internal successors, (40703), 32682 states have internal predecessors, (40703), 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) [2023-12-20 17:08:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32683 states to 32683 states and 40703 transitions. [2023-12-20 17:08:17,545 INFO L78 Accepts]: Start accepts. Automaton has 32683 states and 40703 transitions. Word has length 222 [2023-12-20 17:08:17,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:17,546 INFO L495 AbstractCegarLoop]: Abstraction has 32683 states and 40703 transitions. [2023-12-20 17:08:17,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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) [2023-12-20 17:08:17,546 INFO L276 IsEmpty]: Start isEmpty. Operand 32683 states and 40703 transitions. [2023-12-20 17:08:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-20 17:08:17,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:17,550 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:08:17,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:08:17,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:17,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:17,550 INFO L85 PathProgramCache]: Analyzing trace with hash 814448750, now seen corresponding path program 1 times [2023-12-20 17:08:17,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:17,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246430424] [2023-12-20 17:08:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:17,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:08:17,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:17,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246430424] [2023-12-20 17:08:17,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246430424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:17,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:17,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:17,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090065252] [2023-12-20 17:08:17,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:17,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:08:17,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:17,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:08:17,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:08:17,702 INFO L87 Difference]: Start difference. First operand 32683 states and 40703 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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) [2023-12-20 17:08:23,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:23,548 INFO L93 Difference]: Finished difference Result 87627 states and 111185 transitions. [2023-12-20 17:08:23,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:08:23,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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 226 [2023-12-20 17:08:23,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:23,618 INFO L225 Difference]: With dead ends: 87627 [2023-12-20 17:08:23,618 INFO L226 Difference]: Without dead ends: 55732 [2023-12-20 17:08:23,641 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 [2023-12-20 17:08:23,643 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1735 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 6143 mSolverCounterSat, 1128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 7271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1128 IncrementalHoareTripleChecker+Valid, 6143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:23,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 835 Invalid, 7271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1128 Valid, 6143 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-20 17:08:23,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55732 states. [2023-12-20 17:08:24,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55732 to 54815. [2023-12-20 17:08:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54815 states, 54814 states have (on average 1.2438610573940965) internal successors, (68181), 54814 states have internal predecessors, (68181), 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) [2023-12-20 17:08:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54815 states to 54815 states and 68181 transitions. [2023-12-20 17:08:24,174 INFO L78 Accepts]: Start accepts. Automaton has 54815 states and 68181 transitions. Word has length 226 [2023-12-20 17:08:24,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:24,175 INFO L495 AbstractCegarLoop]: Abstraction has 54815 states and 68181 transitions. [2023-12-20 17:08:24,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 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) [2023-12-20 17:08:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand 54815 states and 68181 transitions. [2023-12-20 17:08:24,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 17:08:24,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:24,177 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:08:24,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:08:24,177 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:24,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:24,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1211315595, now seen corresponding path program 1 times [2023-12-20 17:08:24,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:24,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350024751] [2023-12-20 17:08:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:24,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:08:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350024751] [2023-12-20 17:08:24,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350024751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:24,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:24,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:24,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746742323] [2023-12-20 17:08:24,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:24,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:24,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:24,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:24,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:24,370 INFO L87 Difference]: Start difference. First operand 54815 states and 68181 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-12-20 17:08:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:27,922 INFO L93 Difference]: Finished difference Result 152926 states and 191817 transitions. [2023-12-20 17:08:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:27,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 236 [2023-12-20 17:08:27,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:28,070 INFO L225 Difference]: With dead ends: 152926 [2023-12-20 17:08:28,070 INFO L226 Difference]: Without dead ends: 98899 [2023-12-20 17:08:28,107 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 [2023-12-20 17:08:28,108 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 817 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:28,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 1014 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:08:28,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98899 states. [2023-12-20 17:08:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98899 to 98888. [2023-12-20 17:08:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98888 states, 98887 states have (on average 1.1900350905579096) internal successors, (117679), 98887 states have internal predecessors, (117679), 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) [2023-12-20 17:08:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98888 states to 98888 states and 117679 transitions. [2023-12-20 17:08:29,516 INFO L78 Accepts]: Start accepts. Automaton has 98888 states and 117679 transitions. Word has length 236 [2023-12-20 17:08:29,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:29,518 INFO L495 AbstractCegarLoop]: Abstraction has 98888 states and 117679 transitions. [2023-12-20 17:08:29,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-12-20 17:08:29,519 INFO L276 IsEmpty]: Start isEmpty. Operand 98888 states and 117679 transitions. [2023-12-20 17:08:29,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-12-20 17:08:29,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:29,524 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:29,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:08:29,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:29,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:29,526 INFO L85 PathProgramCache]: Analyzing trace with hash 743653143, now seen corresponding path program 1 times [2023-12-20 17:08:29,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:29,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163344724] [2023-12-20 17:08:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:29,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-20 17:08:29,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:29,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163344724] [2023-12-20 17:08:29,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163344724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:29,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:29,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:08:29,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487957416] [2023-12-20 17:08:29,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:29,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:29,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:29,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:29,822 INFO L87 Difference]: Start difference. First operand 98888 states and 117679 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 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) [2023-12-20 17:08:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:33,290 INFO L93 Difference]: Finished difference Result 182822 states and 219257 transitions. [2023-12-20 17:08:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:33,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 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 312 [2023-12-20 17:08:33,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:33,448 INFO L225 Difference]: With dead ends: 182822 [2023-12-20 17:08:33,448 INFO L226 Difference]: Without dead ends: 98900 [2023-12-20 17:08:33,483 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 [2023-12-20 17:08:33,483 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 730 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:33,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1200 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:08:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98900 states. [2023-12-20 17:08:34,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98900 to 98888. [2023-12-20 17:08:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98888 states, 98887 states have (on average 1.1891249608138583) internal successors, (117589), 98887 states have internal predecessors, (117589), 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) [2023-12-20 17:08:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98888 states to 98888 states and 117589 transitions. [2023-12-20 17:08:34,701 INFO L78 Accepts]: Start accepts. Automaton has 98888 states and 117589 transitions. Word has length 312 [2023-12-20 17:08:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:34,701 INFO L495 AbstractCegarLoop]: Abstraction has 98888 states and 117589 transitions. [2023-12-20 17:08:34,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 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) [2023-12-20 17:08:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 98888 states and 117589 transitions. [2023-12-20 17:08:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-20 17:08:34,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:34,704 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:34,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:08:34,704 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:34,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:34,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1038929910, now seen corresponding path program 1 times [2023-12-20 17:08:34,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:34,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295786293] [2023-12-20 17:08:34,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:34,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-20 17:08:35,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:35,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295786293] [2023-12-20 17:08:35,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295786293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:35,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:35,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574874264] [2023-12-20 17:08:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:35,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:35,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:35,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:35,029 INFO L87 Difference]: Start difference. First operand 98888 states and 117589 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2023-12-20 17:08:38,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:38,593 INFO L93 Difference]: Finished difference Result 196993 states and 234398 transitions. [2023-12-20 17:08:38,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:38,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 315 [2023-12-20 17:08:38,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:38,741 INFO L225 Difference]: With dead ends: 196993 [2023-12-20 17:08:38,741 INFO L226 Difference]: Without dead ends: 98893 [2023-12-20 17:08:38,784 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 [2023-12-20 17:08:38,785 INFO L413 NwaCegarLoop]: 1439 mSDtfsCounter, 941 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 3113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:38,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1531 Invalid, 3113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 17:08:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98893 states. [2023-12-20 17:08:39,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98893 to 96519. [2023-12-20 17:08:40,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96519 states, 96518 states have (on average 1.1505004247912307) internal successors, (111044), 96518 states have internal predecessors, (111044), 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) [2023-12-20 17:08:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96519 states to 96519 states and 111044 transitions. [2023-12-20 17:08:40,134 INFO L78 Accepts]: Start accepts. Automaton has 96519 states and 111044 transitions. Word has length 315 [2023-12-20 17:08:40,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:40,134 INFO L495 AbstractCegarLoop]: Abstraction has 96519 states and 111044 transitions. [2023-12-20 17:08:40,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2023-12-20 17:08:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand 96519 states and 111044 transitions. [2023-12-20 17:08:40,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-20 17:08:40,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:40,137 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:40,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 17:08:40,137 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:40,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash -325693443, now seen corresponding path program 1 times [2023-12-20 17:08:40,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:40,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474092514] [2023-12-20 17:08:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:40,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-20 17:08:40,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:40,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474092514] [2023-12-20 17:08:40,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474092514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:40,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:40,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:40,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750828770] [2023-12-20 17:08:40,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:40,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:40,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:40,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:40,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:40,520 INFO L87 Difference]: Start difference. First operand 96519 states and 111044 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-12-20 17:08:43,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:43,632 INFO L93 Difference]: Finished difference Result 224526 states and 259959 transitions. [2023-12-20 17:08:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:43,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 325 [2023-12-20 17:08:43,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:43,817 INFO L225 Difference]: With dead ends: 224526 [2023-12-20 17:08:43,818 INFO L226 Difference]: Without dead ends: 128795 [2023-12-20 17:08:43,865 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 [2023-12-20 17:08:43,866 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 911 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:43,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 846 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:08:43,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128795 states. [2023-12-20 17:08:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128795 to 128774. [2023-12-20 17:08:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128774 states, 128773 states have (on average 1.1359601779876216) internal successors, (146281), 128773 states have internal predecessors, (146281), 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) [2023-12-20 17:08:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128774 states to 128774 states and 146281 transitions. [2023-12-20 17:08:45,429 INFO L78 Accepts]: Start accepts. Automaton has 128774 states and 146281 transitions. Word has length 325 [2023-12-20 17:08:45,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:45,430 INFO L495 AbstractCegarLoop]: Abstraction has 128774 states and 146281 transitions. [2023-12-20 17:08:45,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-12-20 17:08:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 128774 states and 146281 transitions. [2023-12-20 17:08:45,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-12-20 17:08:45,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:45,435 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:45,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:08:45,435 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:45,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:45,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1937409119, now seen corresponding path program 1 times [2023-12-20 17:08:45,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:45,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841216271] [2023-12-20 17:08:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:45,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 199 proven. 110 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-20 17:08:46,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:46,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841216271] [2023-12-20 17:08:46,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841216271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:08:46,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916326905] [2023-12-20 17:08:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:46,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:08:46,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:08:46,471 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) [2023-12-20 17:08:46,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 17:08:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:46,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:08:46,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:08:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-20 17:08:46,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:08:46,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916326905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:46,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:08:46,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 17:08:46,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943613695] [2023-12-20 17:08:46,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:46,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:46,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:46,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:46,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:08:46,753 INFO L87 Difference]: Start difference. First operand 128774 states and 146281 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-12-20 17:08:50,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:50,195 INFO L93 Difference]: Finished difference Result 255971 states and 290736 transitions. [2023-12-20 17:08:50,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:50,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 341 [2023-12-20 17:08:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:50,369 INFO L225 Difference]: With dead ends: 255971 [2023-12-20 17:08:50,370 INFO L226 Difference]: Without dead ends: 127985 [2023-12-20 17:08:50,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:08:50,434 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1134 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:50,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1438 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:08:50,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127985 states. [2023-12-20 17:08:51,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127985 to 127984. [2023-12-20 17:08:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127984 states, 127983 states have (on average 1.1008180774009049) internal successors, (140886), 127983 states have internal predecessors, (140886), 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) [2023-12-20 17:08:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127984 states to 127984 states and 140886 transitions. [2023-12-20 17:08:52,376 INFO L78 Accepts]: Start accepts. Automaton has 127984 states and 140886 transitions. Word has length 341 [2023-12-20 17:08:52,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:52,377 INFO L495 AbstractCegarLoop]: Abstraction has 127984 states and 140886 transitions. [2023-12-20 17:08:52,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-12-20 17:08:52,378 INFO L276 IsEmpty]: Start isEmpty. Operand 127984 states and 140886 transitions. [2023-12-20 17:08:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-20 17:08:52,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:52,386 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:08:52,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 17:08:52,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-20 17:08:52,605 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:52,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1226242089, now seen corresponding path program 1 times [2023-12-20 17:08:52,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:52,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706789191] [2023-12-20 17:08:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:52,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:08:52,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:52,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706789191] [2023-12-20 17:08:52,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706789191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:52,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:52,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458451743] [2023-12-20 17:08:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:52,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:08:52,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:52,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:08:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:08:52,794 INFO L87 Difference]: Start difference. First operand 127984 states and 140886 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2023-12-20 17:08:56,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:08:56,254 INFO L93 Difference]: Finished difference Result 288262 states and 317523 transitions. [2023-12-20 17:08:56,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:08:56,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 356 [2023-12-20 17:08:56,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:08:56,457 INFO L225 Difference]: With dead ends: 288262 [2023-12-20 17:08:56,457 INFO L226 Difference]: Without dead ends: 161066 [2023-12-20 17:08:56,503 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 [2023-12-20 17:08:56,504 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 843 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:08:56,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1098 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:08:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161066 states. [2023-12-20 17:08:58,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161066 to 157104. [2023-12-20 17:08:58,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157104 states, 157103 states have (on average 1.0928180874967377) internal successors, (171685), 157103 states have internal predecessors, (171685), 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) [2023-12-20 17:08:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157104 states to 157104 states and 171685 transitions. [2023-12-20 17:08:58,435 INFO L78 Accepts]: Start accepts. Automaton has 157104 states and 171685 transitions. Word has length 356 [2023-12-20 17:08:58,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:08:58,436 INFO L495 AbstractCegarLoop]: Abstraction has 157104 states and 171685 transitions. [2023-12-20 17:08:58,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2023-12-20 17:08:58,436 INFO L276 IsEmpty]: Start isEmpty. Operand 157104 states and 171685 transitions. [2023-12-20 17:08:58,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-20 17:08:58,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:08:58,439 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, 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, 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] [2023-12-20 17:08:58,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:08:58,440 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:08:58,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:08:58,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1564136177, now seen corresponding path program 1 times [2023-12-20 17:08:58,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:08:58,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968247561] [2023-12-20 17:08:58,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:08:58,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:08:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:08:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-20 17:08:59,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:08:59,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968247561] [2023-12-20 17:08:59,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968247561] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:08:59,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:08:59,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:08:59,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702375945] [2023-12-20 17:08:59,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:08:59,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:08:59,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:08:59,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:08:59,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:08:59,065 INFO L87 Difference]: Start difference. First operand 157104 states and 171685 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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) [2023-12-20 17:09:04,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:04,620 INFO L93 Difference]: Finished difference Result 360841 states and 394844 transitions. [2023-12-20 17:09:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:09:04,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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 358 [2023-12-20 17:09:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:04,956 INFO L225 Difference]: With dead ends: 360841 [2023-12-20 17:09:04,956 INFO L226 Difference]: Without dead ends: 204525 [2023-12-20 17:09:05,022 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 [2023-12-20 17:09:05,022 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1702 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 6524 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 7314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 6524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:05,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 752 Invalid, 7314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 6524 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 17:09:05,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204525 states. [2023-12-20 17:09:07,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204525 to 203608. [2023-12-20 17:09:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203608 states, 203607 states have (on average 1.0939604237575329) internal successors, (222738), 203607 states have internal predecessors, (222738), 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) [2023-12-20 17:09:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203608 states to 203608 states and 222738 transitions. [2023-12-20 17:09:07,804 INFO L78 Accepts]: Start accepts. Automaton has 203608 states and 222738 transitions. Word has length 358 [2023-12-20 17:09:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:07,804 INFO L495 AbstractCegarLoop]: Abstraction has 203608 states and 222738 transitions. [2023-12-20 17:09:07,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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) [2023-12-20 17:09:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 203608 states and 222738 transitions. [2023-12-20 17:09:07,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-20 17:09:07,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:07,808 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, 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, 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] [2023-12-20 17:09:07,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:09:07,808 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:07,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:07,809 INFO L85 PathProgramCache]: Analyzing trace with hash 785127993, now seen corresponding path program 1 times [2023-12-20 17:09:07,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:07,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150889087] [2023-12-20 17:09:07,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:07,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-20 17:09:07,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:07,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150889087] [2023-12-20 17:09:07,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150889087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:07,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:07,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:07,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218048245] [2023-12-20 17:09:07,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:07,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:07,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:07,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:07,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:07,956 INFO L87 Difference]: Start difference. First operand 203608 states and 222738 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-12-20 17:09:11,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:11,874 INFO L93 Difference]: Finished difference Result 414265 states and 452541 transitions. [2023-12-20 17:09:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:11,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 387 [2023-12-20 17:09:11,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:12,228 INFO L225 Difference]: With dead ends: 414265 [2023-12-20 17:09:12,228 INFO L226 Difference]: Without dead ends: 211445 [2023-12-20 17:09:12,326 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 [2023-12-20 17:09:12,327 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 1027 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:12,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 1624 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:09:12,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211445 states. [2023-12-20 17:09:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211445 to 199625. [2023-12-20 17:09:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199625 states, 199624 states have (on average 1.0674968941610228) internal successors, (213098), 199624 states have internal predecessors, (213098), 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) [2023-12-20 17:09:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199625 states to 199625 states and 213098 transitions. [2023-12-20 17:09:15,360 INFO L78 Accepts]: Start accepts. Automaton has 199625 states and 213098 transitions. Word has length 387 [2023-12-20 17:09:15,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:15,361 INFO L495 AbstractCegarLoop]: Abstraction has 199625 states and 213098 transitions. [2023-12-20 17:09:15,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-12-20 17:09:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 199625 states and 213098 transitions. [2023-12-20 17:09:15,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-12-20 17:09:15,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:15,364 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:15,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:09:15,364 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:15,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:15,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2133306304, now seen corresponding path program 1 times [2023-12-20 17:09:15,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:15,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199555278] [2023-12-20 17:09:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:15,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-20 17:09:15,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:15,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199555278] [2023-12-20 17:09:15,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199555278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:15,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:15,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:09:15,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496150754] [2023-12-20 17:09:15,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:15,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:15,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:09:15,940 INFO L87 Difference]: Start difference. First operand 199625 states and 213098 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2023-12-20 17:09:19,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:19,714 INFO L93 Difference]: Finished difference Result 436245 states and 467048 transitions. [2023-12-20 17:09:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:19,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 391 [2023-12-20 17:09:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:20,147 INFO L225 Difference]: With dead ends: 436245 [2023-12-20 17:09:20,148 INFO L226 Difference]: Without dead ends: 237408 [2023-12-20 17:09:20,640 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 [2023-12-20 17:09:20,641 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 787 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 2992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:20,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1880 Invalid, 2992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:09:20,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237408 states. [2023-12-20 17:09:23,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237408 to 231097. [2023-12-20 17:09:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231097 states, 231096 states have (on average 1.0627098694914667) internal successors, (245588), 231096 states have internal predecessors, (245588), 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) [2023-12-20 17:09:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231097 states to 231097 states and 245588 transitions. [2023-12-20 17:09:23,978 INFO L78 Accepts]: Start accepts. Automaton has 231097 states and 245588 transitions. Word has length 391 [2023-12-20 17:09:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:23,979 INFO L495 AbstractCegarLoop]: Abstraction has 231097 states and 245588 transitions. [2023-12-20 17:09:23,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2023-12-20 17:09:23,979 INFO L276 IsEmpty]: Start isEmpty. Operand 231097 states and 245588 transitions. [2023-12-20 17:09:23,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-12-20 17:09:23,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:23,987 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, 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, 2, 2, 2, 2, 2, 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] [2023-12-20 17:09:23,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:09:23,987 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:23,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:23,988 INFO L85 PathProgramCache]: Analyzing trace with hash 730660434, now seen corresponding path program 1 times [2023-12-20 17:09:23,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:23,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676426253] [2023-12-20 17:09:23,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:23,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 496 proven. 113 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-12-20 17:09:25,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:25,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676426253] [2023-12-20 17:09:25,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676426253] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:09:25,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385193759] [2023-12-20 17:09:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:25,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:09:25,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:09:25,226 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) [2023-12-20 17:09:25,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 17:09:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:25,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:09:25,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:09:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2023-12-20 17:09:25,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:09:25,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385193759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:25,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:09:25,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:09:25,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269087586] [2023-12-20 17:09:25,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:25,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:25,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:25,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:25,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:09:25,468 INFO L87 Difference]: Start difference. First operand 231097 states and 245588 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2023-12-20 17:09:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:29,328 INFO L93 Difference]: Finished difference Result 444095 states and 472544 transitions. [2023-12-20 17:09:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:29,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 492 [2023-12-20 17:09:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:29,676 INFO L225 Difference]: With dead ends: 444095 [2023-12-20 17:09:29,676 INFO L226 Difference]: Without dead ends: 231106 [2023-12-20 17:09:29,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:09:29,777 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1033 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:29,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 527 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 17:09:29,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231106 states. [2023-12-20 17:09:32,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231106 to 228736. [2023-12-20 17:09:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228736 states, 228735 states have (on average 1.0585699608717511) internal successors, (242132), 228735 states have internal predecessors, (242132), 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) [2023-12-20 17:09:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228736 states to 228736 states and 242132 transitions. [2023-12-20 17:09:32,566 INFO L78 Accepts]: Start accepts. Automaton has 228736 states and 242132 transitions. Word has length 492 [2023-12-20 17:09:32,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:32,566 INFO L495 AbstractCegarLoop]: Abstraction has 228736 states and 242132 transitions. [2023-12-20 17:09:32,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2023-12-20 17:09:32,567 INFO L276 IsEmpty]: Start isEmpty. Operand 228736 states and 242132 transitions. [2023-12-20 17:09:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-20 17:09:32,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:32,576 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, 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, 2, 2, 2, 2, 2, 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] [2023-12-20 17:09:32,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 17:09:32,781 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,SelfDestructingSolverStorable16 [2023-12-20 17:09:32,782 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:32,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:32,782 INFO L85 PathProgramCache]: Analyzing trace with hash -111198632, now seen corresponding path program 1 times [2023-12-20 17:09:32,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:32,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446130436] [2023-12-20 17:09:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:32,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 530 proven. 113 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-12-20 17:09:34,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:34,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446130436] [2023-12-20 17:09:34,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446130436] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:09:34,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678366985] [2023-12-20 17:09:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:34,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:09:34,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:09:34,098 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) [2023-12-20 17:09:34,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 17:09:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:34,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:09:34,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:09:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2023-12-20 17:09:34,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:09:34,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678366985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:34,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:09:34,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:09:34,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236597693] [2023-12-20 17:09:34,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:34,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:34,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:34,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:09:34,332 INFO L87 Difference]: Start difference. First operand 228736 states and 242132 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-12-20 17:09:37,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:37,980 INFO L93 Difference]: Finished difference Result 456690 states and 483396 transitions. [2023-12-20 17:09:37,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:37,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 509 [2023-12-20 17:09:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:38,437 INFO L225 Difference]: With dead ends: 456690 [2023-12-20 17:09:38,438 INFO L226 Difference]: Without dead ends: 228742 [2023-12-20 17:09:38,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:09:38,620 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 871 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:38,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1662 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:09:38,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228742 states. [2023-12-20 17:09:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228742 to 225580. [2023-12-20 17:09:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225580 states, 225579 states have (on average 1.0524605570553998) internal successors, (237413), 225579 states have internal predecessors, (237413), 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) [2023-12-20 17:09:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225580 states to 225580 states and 237413 transitions. [2023-12-20 17:09:41,869 INFO L78 Accepts]: Start accepts. Automaton has 225580 states and 237413 transitions. Word has length 509 [2023-12-20 17:09:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:41,869 INFO L495 AbstractCegarLoop]: Abstraction has 225580 states and 237413 transitions. [2023-12-20 17:09:41,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-12-20 17:09:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 225580 states and 237413 transitions. [2023-12-20 17:09:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-12-20 17:09:41,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:41,879 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:41,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 17:09:42,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 17:09:42,085 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:42,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash -976881967, now seen corresponding path program 1 times [2023-12-20 17:09:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:42,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837304042] [2023-12-20 17:09:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 293 proven. 113 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-20 17:09:43,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837304042] [2023-12-20 17:09:43,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837304042] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:09:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95676970] [2023-12-20 17:09:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:43,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:09:43,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:09:43,318 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) [2023-12-20 17:09:43,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 17:09:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:43,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:09:43,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:09:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-12-20 17:09:43,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:09:43,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95676970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:43,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:09:43,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-20 17:09:43,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232771961] [2023-12-20 17:09:43,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:43,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:09:43,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:43,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:09:43,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:09:43,939 INFO L87 Difference]: Start difference. First operand 225580 states and 237413 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 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) [2023-12-20 17:09:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:47,270 INFO L93 Difference]: Finished difference Result 438576 states and 462111 transitions. [2023-12-20 17:09:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:09:47,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 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 520 [2023-12-20 17:09:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:47,604 INFO L225 Difference]: With dead ends: 438576 [2023-12-20 17:09:47,604 INFO L226 Difference]: Without dead ends: 229528 [2023-12-20 17:09:47,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:09:47,703 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 682 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:47,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1156 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:09:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229528 states. [2023-12-20 17:09:50,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229528 to 227156. [2023-12-20 17:09:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227156 states, 227155 states have (on average 1.0481301314080693) internal successors, (238088), 227155 states have internal predecessors, (238088), 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) [2023-12-20 17:09:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227156 states to 227156 states and 238088 transitions. [2023-12-20 17:09:50,504 INFO L78 Accepts]: Start accepts. Automaton has 227156 states and 238088 transitions. Word has length 520 [2023-12-20 17:09:50,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:09:50,504 INFO L495 AbstractCegarLoop]: Abstraction has 227156 states and 238088 transitions. [2023-12-20 17:09:50,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 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) [2023-12-20 17:09:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 227156 states and 238088 transitions. [2023-12-20 17:09:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-20 17:09:50,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:09:50,515 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:09:50,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 17:09:50,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:09:50,721 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:09:50,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:09:50,722 INFO L85 PathProgramCache]: Analyzing trace with hash -662476503, now seen corresponding path program 1 times [2023-12-20 17:09:50,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:09:50,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796062854] [2023-12-20 17:09:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:09:50,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:09:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:09:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-20 17:09:52,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:09:52,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796062854] [2023-12-20 17:09:52,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796062854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:09:52,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:09:52,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:09:52,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340975888] [2023-12-20 17:09:52,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:09:52,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:09:52,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:09:52,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:09:52,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:09:52,406 INFO L87 Difference]: Start difference. First operand 227156 states and 238088 transitions. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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) [2023-12-20 17:09:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:09:59,050 INFO L93 Difference]: Finished difference Result 506345 states and 530953 transitions. [2023-12-20 17:09:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:09:59,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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 642 [2023-12-20 17:09:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:09:59,450 INFO L225 Difference]: With dead ends: 506345 [2023-12-20 17:09:59,450 INFO L226 Difference]: Without dead ends: 279977 [2023-12-20 17:09:59,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:09:59,555 INFO L413 NwaCegarLoop]: 1222 mSDtfsCounter, 1663 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 5272 mSolverCounterSat, 976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 6248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 976 IncrementalHoareTripleChecker+Valid, 5272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:09:59,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 1431 Invalid, 6248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [976 Valid, 5272 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 17:09:59,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279977 states. [2023-12-20 17:10:02,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279977 to 265737. [2023-12-20 17:10:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265737 states, 265736 states have (on average 1.0464972754914652) internal successors, (278092), 265736 states have internal predecessors, (278092), 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) [2023-12-20 17:10:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265737 states to 265737 states and 278092 transitions. [2023-12-20 17:10:03,028 INFO L78 Accepts]: Start accepts. Automaton has 265737 states and 278092 transitions. Word has length 642 [2023-12-20 17:10:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:03,028 INFO L495 AbstractCegarLoop]: Abstraction has 265737 states and 278092 transitions. [2023-12-20 17:10:03,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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) [2023-12-20 17:10:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 265737 states and 278092 transitions. [2023-12-20 17:10:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-12-20 17:10:03,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:03,041 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:03,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 17:10:03,042 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:03,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 298482643, now seen corresponding path program 1 times [2023-12-20 17:10:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015668922] [2023-12-20 17:10:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 17:10:04,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015668922] [2023-12-20 17:10:04,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015668922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:04,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:04,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:04,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288076417] [2023-12-20 17:10:04,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:04,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:10:04,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:04,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:10:04,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:10:04,006 INFO L87 Difference]: Start difference. First operand 265737 states and 278092 transitions. Second operand has 4 states, 4 states have (on average 159.5) internal successors, (638), 3 states have internal predecessors, (638), 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) [2023-12-20 17:10:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:09,867 INFO L93 Difference]: Finished difference Result 585045 states and 613680 transitions. [2023-12-20 17:10:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:10:09,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 159.5) internal successors, (638), 3 states have internal predecessors, (638), 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 732 [2023-12-20 17:10:09,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:10,477 INFO L225 Difference]: With dead ends: 585045 [2023-12-20 17:10:10,477 INFO L226 Difference]: Without dead ends: 337416 [2023-12-20 17:10:10,562 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 [2023-12-20 17:10:10,562 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 1176 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 5113 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 5871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 5113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:10,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 791 Invalid, 5871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 5113 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-20 17:10:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337416 states. [2023-12-20 17:10:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337416 to 306688. [2023-12-20 17:10:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306688 states, 306687 states have (on average 1.0458187011513367) internal successors, (320739), 306687 states have internal predecessors, (320739), 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) [2023-12-20 17:10:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306688 states to 306688 states and 320739 transitions. [2023-12-20 17:10:15,195 INFO L78 Accepts]: Start accepts. Automaton has 306688 states and 320739 transitions. Word has length 732 [2023-12-20 17:10:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:15,195 INFO L495 AbstractCegarLoop]: Abstraction has 306688 states and 320739 transitions. [2023-12-20 17:10:15,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.5) internal successors, (638), 3 states have internal predecessors, (638), 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) [2023-12-20 17:10:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 306688 states and 320739 transitions. [2023-12-20 17:10:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2023-12-20 17:10:15,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:15,220 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:15,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:10:15,221 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:15,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1022665547, now seen corresponding path program 1 times [2023-12-20 17:10:15,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:15,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007695334] [2023-12-20 17:10:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:15,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-20 17:10:15,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:15,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007695334] [2023-12-20 17:10:15,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007695334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:15,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:15,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:15,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143484265] [2023-12-20 17:10:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:15,745 INFO L87 Difference]: Start difference. First operand 306688 states and 320739 transitions. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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) [2023-12-20 17:10:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:19,971 INFO L93 Difference]: Finished difference Result 599936 states and 628515 transitions. [2023-12-20 17:10:19,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:19,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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 747 [2023-12-20 17:10:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:20,472 INFO L225 Difference]: With dead ends: 599936 [2023-12-20 17:10:20,472 INFO L226 Difference]: Without dead ends: 311355 [2023-12-20 17:10:20,590 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 [2023-12-20 17:10:20,590 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 973 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:20,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1443 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:10:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311355 states. [2023-12-20 17:10:23,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311355 to 305057. [2023-12-20 17:10:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305057 states, 305056 states have (on average 1.043939473408161) internal successors, (318460), 305056 states have internal predecessors, (318460), 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) [2023-12-20 17:10:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305057 states to 305057 states and 318460 transitions. [2023-12-20 17:10:24,785 INFO L78 Accepts]: Start accepts. Automaton has 305057 states and 318460 transitions. Word has length 747 [2023-12-20 17:10:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:24,786 INFO L495 AbstractCegarLoop]: Abstraction has 305057 states and 318460 transitions. [2023-12-20 17:10:24,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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) [2023-12-20 17:10:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 305057 states and 318460 transitions. [2023-12-20 17:10:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-12-20 17:10:24,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:24,802 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:24,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:10:24,802 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:24,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1140749889, now seen corresponding path program 1 times [2023-12-20 17:10:24,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:24,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565128932] [2023-12-20 17:10:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:24,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 668 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-20 17:10:25,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:25,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565128932] [2023-12-20 17:10:25,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565128932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:25,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:25,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:25,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18704840] [2023-12-20 17:10:25,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:25,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:25,395 INFO L87 Difference]: Start difference. First operand 305057 states and 318460 transitions. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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) [2023-12-20 17:10:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:30,571 INFO L93 Difference]: Finished difference Result 683444 states and 713894 transitions. [2023-12-20 17:10:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:30,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 782 [2023-12-20 17:10:30,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:31,312 INFO L225 Difference]: With dead ends: 683444 [2023-12-20 17:10:31,312 INFO L226 Difference]: Without dead ends: 379175 [2023-12-20 17:10:31,439 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 [2023-12-20 17:10:31,440 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 815 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2836 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 2836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:31,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 720 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 2836 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 17:10:31,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379175 states. [2023-12-20 17:10:35,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379175 to 343636. [2023-12-20 17:10:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343636 states, 343635 states have (on average 1.042972921850219) internal successors, (358402), 343635 states have internal predecessors, (358402), 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) [2023-12-20 17:10:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343636 states to 343636 states and 358402 transitions. [2023-12-20 17:10:35,867 INFO L78 Accepts]: Start accepts. Automaton has 343636 states and 358402 transitions. Word has length 782 [2023-12-20 17:10:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:35,868 INFO L495 AbstractCegarLoop]: Abstraction has 343636 states and 358402 transitions. [2023-12-20 17:10:35,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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) [2023-12-20 17:10:35,868 INFO L276 IsEmpty]: Start isEmpty. Operand 343636 states and 358402 transitions. [2023-12-20 17:10:36,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-20 17:10:36,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:36,230 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, 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:36,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:10:36,230 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:36,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:36,230 INFO L85 PathProgramCache]: Analyzing trace with hash 350910626, now seen corresponding path program 1 times [2023-12-20 17:10:36,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:36,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901380516] [2023-12-20 17:10:36,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:36,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2023-12-20 17:10:36,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:36,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901380516] [2023-12-20 17:10:36,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901380516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:36,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:36,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:36,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333473668] [2023-12-20 17:10:36,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:36,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:36,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:36,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:36,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:36,765 INFO L87 Difference]: Start difference. First operand 343636 states and 358402 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2023-12-20 17:10:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:40,976 INFO L93 Difference]: Finished difference Result 669958 states and 699316 transitions. [2023-12-20 17:10:40,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:40,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 786 [2023-12-20 17:10:40,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:41,474 INFO L225 Difference]: With dead ends: 669958 [2023-12-20 17:10:41,475 INFO L226 Difference]: Without dead ends: 344428 [2023-12-20 17:10:41,612 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 [2023-12-20 17:10:41,612 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 722 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:41,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1860 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:10:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344428 states. [2023-12-20 17:10:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344428 to 344424. [2023-12-20 17:10:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344424 states, 344423 states have (on average 1.0429762240036236) internal successors, (359225), 344423 states have internal predecessors, (359225), 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) [2023-12-20 17:10:46,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344424 states to 344424 states and 359225 transitions. [2023-12-20 17:10:46,341 INFO L78 Accepts]: Start accepts. Automaton has 344424 states and 359225 transitions. Word has length 786 [2023-12-20 17:10:46,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:46,341 INFO L495 AbstractCegarLoop]: Abstraction has 344424 states and 359225 transitions. [2023-12-20 17:10:46,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2023-12-20 17:10:46,341 INFO L276 IsEmpty]: Start isEmpty. Operand 344424 states and 359225 transitions. [2023-12-20 17:10:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2023-12-20 17:10:46,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:46,357 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:10:46,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 17:10:46,358 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:46,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:46,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1580490481, now seen corresponding path program 1 times [2023-12-20 17:10:46,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:46,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862064449] [2023-12-20 17:10:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:46,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-20 17:10:47,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:47,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862064449] [2023-12-20 17:10:47,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862064449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:47,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:47,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:47,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344091259] [2023-12-20 17:10:47,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:47,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:47,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:47,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:47,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:47,143 INFO L87 Difference]: Start difference. First operand 344424 states and 359225 transitions. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 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) [2023-12-20 17:10:51,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:10:51,640 INFO L93 Difference]: Finished difference Result 708525 states and 739891 transitions. [2023-12-20 17:10:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:10:51,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 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 796 [2023-12-20 17:10:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:10:52,573 INFO L225 Difference]: With dead ends: 708525 [2023-12-20 17:10:52,573 INFO L226 Difference]: Without dead ends: 382207 [2023-12-20 17:10:52,682 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 [2023-12-20 17:10:52,683 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 980 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:10:52,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 630 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 17:10:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382207 states. [2023-12-20 17:10:56,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382207 to 376686. [2023-12-20 17:10:57,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376686 states, 376685 states have (on average 1.0391255292883974) internal successors, (391423), 376685 states have internal predecessors, (391423), 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) [2023-12-20 17:10:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376686 states to 376686 states and 391423 transitions. [2023-12-20 17:10:57,530 INFO L78 Accepts]: Start accepts. Automaton has 376686 states and 391423 transitions. Word has length 796 [2023-12-20 17:10:57,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:10:57,530 INFO L495 AbstractCegarLoop]: Abstraction has 376686 states and 391423 transitions. [2023-12-20 17:10:57,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 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) [2023-12-20 17:10:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 376686 states and 391423 transitions. [2023-12-20 17:10:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2023-12-20 17:10:57,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:10:57,893 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:10:57,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 17:10:57,894 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:10:57,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:10:57,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1794455036, now seen corresponding path program 1 times [2023-12-20 17:10:57,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:10:57,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73197774] [2023-12-20 17:10:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:10:57,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:10:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:10:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 751 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-20 17:10:58,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:10:58,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73197774] [2023-12-20 17:10:58,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73197774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:10:58,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:10:58,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:10:58,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093358476] [2023-12-20 17:10:58,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:10:58,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:10:58,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:10:58,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:10:58,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:10:58,578 INFO L87 Difference]: Start difference. First operand 376686 states and 391423 transitions. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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) [2023-12-20 17:11:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:11:02,791 INFO L93 Difference]: Finished difference Result 736859 states and 766121 transitions. [2023-12-20 17:11:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:11:02,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 799 [2023-12-20 17:11:02,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:11:03,382 INFO L225 Difference]: With dead ends: 736859 [2023-12-20 17:11:03,382 INFO L226 Difference]: Without dead ends: 376701 [2023-12-20 17:11:03,511 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 [2023-12-20 17:11:03,511 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 773 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:11:03,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1734 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:11:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376701 states. [2023-12-20 17:11:07,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376701 to 372748. [2023-12-20 17:11:07,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372748 states, 372747 states have (on average 1.036239057591342) internal successors, (386255), 372747 states have internal predecessors, (386255), 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) [2023-12-20 17:11:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372748 states to 372748 states and 386255 transitions. [2023-12-20 17:11:08,961 INFO L78 Accepts]: Start accepts. Automaton has 372748 states and 386255 transitions. Word has length 799 [2023-12-20 17:11:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:11:08,961 INFO L495 AbstractCegarLoop]: Abstraction has 372748 states and 386255 transitions. [2023-12-20 17:11:08,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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) [2023-12-20 17:11:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 372748 states and 386255 transitions. [2023-12-20 17:11:08,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2023-12-20 17:11:08,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:11:08,997 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:11:08,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 17:11:08,997 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:11:08,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:11:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash 310363084, now seen corresponding path program 1 times [2023-12-20 17:11:08,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:11:08,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588654627] [2023-12-20 17:11:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:11:08,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:11:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:11:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2023-12-20 17:11:09,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:11:09,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588654627] [2023-12-20 17:11:09,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588654627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:11:09,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:11:09,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:11:09,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228039354] [2023-12-20 17:11:09,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:11:09,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:11:09,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:11:09,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:11:09,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:11:09,308 INFO L87 Difference]: Start difference. First operand 372748 states and 386255 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 2 states have internal predecessors, (538), 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)